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Home / Product Category / Whole House Audio / Volume Controls / In-Wall Volume Controls / SVC100 100W Impedance Matching Decora Style Rotary Speaker Volume Control Kit with (White, Ivory, Almond) Black, Brown Optional Colored Plates

SVC100 100W Impedance Matching Decora Style Rotary Speaker Volume Control Kit with (White, Ivory, Almond) Black, Brown Optional Colored Plates

Product code: OSD-SVC-100

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Features & Specifications


. Decora style impedance-matching volume control for whole house audio systems and dedicated audio zones
. Rated at 100 Watts per channel with minimal bass roll-off
. Impedance-matching feature stabilizes the ohm load so parallel connections of multiple volume controls can be installed without damaging the amplifier
. Front-mounted adjustable jumpers allow easy adjustment when multiple pairs of speakers are connected to a single receiver or amplifier
. Accepts up to 14-gauge wiring and fits in a standard gang box with a depth of 2.9”
. Includes junction box and screws as well as white, ivory and almond trim plates to match any room décor
. Precision electronics provide low distortion and a ruler flat frequency response
. 12-step linear rotary-style knob for a wide range of listening volumes
. Installs easily and works with almost any audio system

OSD Audio’s SVC100 is an impedance-matching volume control that lets you adjust the volume of a pair of speakers independently of other speakers within a whole house audio system. Ideal for areas such dining or conference rooms where you may want softer volumes or for saunas or garages where you may want higher volumes, the SVC100 maintains the full hi-fi audio frequency response with no low frequency roll-off. Equipped with the same features of volume controls that cost twice as much, the SCV100 is rated at 100 Watts peak and includes adjustable jumpers to add up to eight pairs of 8-ohm speakers simultaneously. The impedance-matching feature helps stabilize the ohm load going back to the amp or receiver to avoid overheating and damaging expensive equipment. A complete volume control kit that fits into a standard single-gang box, the SVC100 also includes the junction box, screws and assorted color trim plates (white, ivory and almond) so you can choose the color that best matches the room. This versatile whole house volume control is compatible with almost any dedicated audio zone or whole house system, and the 12-step rotary knob adjusts the volume from inaudible to loud and everything in between.

What Is Impedance Protection?

Speakers are specified by impedance, which is a measurement of resistance to alternating current, and a common value for speakers is 8 ohms. When you’re connecting multiple speakers to a receiver or amplifier, you need to stay above the amp’s minimum load requirements because going below the impedance rating can overheat or even damage expensive equipment. The SVC100 allows you to match the impedance with the number of speakers being controlled with the capabilities of your amp. A basic multi-room system will typically have an amplifier/receiver, a speaker selector, four to eight pairs of speakers, and volume controls. Impedance-matching volume controls feature three settings depending on how many speakers you are connecting. For one to two pairs of 8-ohm speakers, the setting is 1/2x; for three or four pairs of 8 ohm speakers, the setting is 4X. Keep in mind that volume controls do not add gain (volume) to your speakers but simply attenuate the volume up or down. During setup, you'll set the source volume to its optimum level, then the volume control turns the sound down to inaudible levels.


More about Impedance Matching

All speakers have an impedance rating, typically 8 ohm for a pair of home speakers. To operate in the safest mode, most standard amplifiers and basic two-channel receivers are rated for an 8-ohm incoming load. To operate safely and consistently, the amp needs to see an 8 ohm load, and that’s where speaker selectors and impedance-matching volume controls come into play. In a basic multi room system, only a Speaker Selector is used to connect the speakers to the amplifier/receiver. Not only does the Speaker Selector allow you to connect multiple speakers to the amplifier but also adds internal Impedance Protection which is enabled by a manual protection switch. Both our ISS and DSM series Speaker Selectors feature internal Resistors that protect the amplifier. The down side is that the power rating normally 140 watts is cut in half when the protection switch is enabled so rated at 70 watts with protection. In a standard multi-room system (using Impedance Matching VC) you will typically have an amplifier/receiver, a speaker selector with 4 to 8 zones, and volume controls connected to all the speakers. Impedance-matching volume controls provide more precise protection for the amplifier/receiver versus the protection built into the standard speaker selector. Plus with the protection switch in the off position you will have the maximum power handling capability of the respective speaker selector. It is important that the protection switch is turned off when using the Impedance matching Volume Controls. Most impedance-matching volume controls feature three standard settings: 1/2x, 4x and 8x, while some add a 16-ohm setting like our VMS series. These settings correspond to a chart in the owner’s manual based upon the type of amplifier (4 or 8 ohm) and the number of 4 or 8 ohm speakers that you will be using in the multi-zone/room/speaker system. You can use both 4 and 8 ohm speakers when setting up your system. But you need to count a 4 ohm speaker as two 8 ohm speakers when calculating your Impedance setting.


  View Owner's Manual            Product Information


41 Questions & 42 Answers
Wayne Powell
from Lake Havasu, AZ. asked:
January 31, 2020
Is there a way to disable the impedance matching on these volume controls once installed so as to use a speaker selector switch with built in control ? Thanks.
2 Answers
Hi Wayne:

Is your Speaker Selector an OSD Branded unit? If so, which OSD model, if not, can you tell me the Brand and Model? I need to know so I can answer your question correctly. There are several options available. Please contact me at and let me know. I am curious about how many zones and how many pairs of speakers per zone you have. And what Amplifier/Receiver are you using for power?


Submitted by: Tim Leahy on February 3, 2020
Hi Wayne
Submitted by: Tim Leahy on February 3, 2020

Doug williams
from Sebastopol, ca asked:
January 13, 2020
I have 2 pair of 6 ohm wall speaker. My a/b receiver broke so I want to purchase a Sonos amp to stream music. It won’t handle 4 six ohm speakers....what impedance matching in wall speaker volume controls can I use?
1 Answer
Hi Doug:

The SVC100 power rating is at 50W RMS and 100W peak. You would need at least the SVC300 rated at 125 Watts RMS, 300 Watts peak. The Impedance Matching settings you based upon the number of 8-ohm speakers wired in parallel. 4-ohm speakers calculated as (2)-8ohm speakers plus a 6-ohm speaker would be as (1.5) 8-ohm speakers. If you use one SVC300, your impedance setting would be 4X. If you want to use two SVC300 and since the SONOS Amp will do a 4-ohm load, you could set the Impedance setting to 2X for both pairs of 6-ohm speakers, each with an SVC300.


Submitted by: Tim Leahy on January 15, 2020

from Spring, tx asked:
June 21, 2019
I have an onkyo TX nr676.  For main room I have four Polk audio rc 80i speakers and a center speaker all rated at 100w.  For outdoor, I am getting a pair of Polk audio 200 patio speakers.  Amp and speakers all at 100 watts per.  I want to put volume control on outside pair for zone 2.  I have the svc 100 for the pair.  Is that the right control?  What should switch be set at?
1 Answer
Hi Jim:

It sounds like you are planning to connect your pair of Polk outdoor speakers to the Zone 2 output of your ONKYO TX-NR676. If that is all you are planning for your system with no intention of expanding in the future, then we would recommend the VKR120 for indoor mounting or the OVC305R Resister based outdoor weatherproof version would work the best. If you are planning on expanding in the future, then your two choices would be between either the SVC300 (indoor) or OVC300. The SVC100 rated at 50 watts RMS continuous with a peak of 100 Watts. The SVC300 and OVC300 feature Impedance Matching and for your application (one pair of 8-ohm speakers) your impedance matching setting would be 1/2X. You may find that a couple of speakers is not enough coverage for your outdoors application. 

Good luck


Submitted by: Tim Leahy on June 24, 2019

Brett B.
from Fairfield, CA asked:
March 4, 2019
I have four zones that will be powered by an AMP200 or AMP300 and switched by a selector with impedance protection switched off. All speakers will be 8ohm, and all will be controlled by SVC100 controllers. One zone will terminate to an A/B, A&B switch, then run into two volume controllers. I will sometimes switch to both A and B powered at the same time. Having this one zone wired with four speakers in parallel, what should I set my volume controllers to? Should the two-volume controller's zone be set differently than the other three? Will this cause this zone to have a lower volume since its now a 4ohm load? Thank you.

from Columbia, SC asked:
January 24, 2019
I have a 4 ohm amp driving two 3 ohm speakers. I want to install a volume control to control each speaker volume independent of the other. Or I would like to control one speaker and use the standard volume output on the other speaker. Any idea what I need to do to control the speaker volumes independently?
1 Answer
Hi Jerry: Could you please clarify a few things? 1) What four channel power amplifier do you have (Brand and Model) 2) What 3-ohm speaker are you referring to (again, Brand and Model)? 3) Are you saying you have two pairs of speakers or two speakers each? 4) The SVC100 is a stereo Volume Control. Please let me know, thanks in advance. TL/5381
Submitted by: Tim Leahy on January 26, 2019

from SLC, Utah asked:
November 10, 2018
When wiring my home audio we only ran from the reciever (1) 2 wire conductor to each volume control. From each volume control we ran the same wire to each speaker. I have 2 speakers set up for each volume control. How can I make this set up work knowing that I won't be hearing in stereo?
1 Answer
HI Tad: A couple of questions so I can better answer your question. How many rooms are we talking about is there with single volume control and two speakers (1 pair). Are you talking about a two-channel stereo receiver or Audio Video Surround Sound Receiver (Brand name and model number please)? I think you need to convert your signal to Full Range Mono and split the two conductor wire to four conductors, then into the Volume Control. Then connect the right output to the first speaker and the left output to the second speaker. But I need to know the rest of your setup before I can come up with a solution. My direct email is Please let me know. TL/5278
Submitted by: Tim Leahy on November 11, 2018

from Alaska asked:
November 1, 2018
Can this be used with a single 8ohm speaker? what jumper setting?
1 Answer
Hi Joel: The SVC100 will work with any speaker pair rated at 4, 6, 8 or 16 ohms. The Impedance setting number represents the number of 8-ohm pairs you will be connecting in parallel. So if you have 1 to 2 pairs, your setting would be 1/2X. 3 to 4 sets would be 4X and 5-8 pairs 8X. Note, the number based upon 8-ohm pairs. If you have 4-ohm pairs, it counts for two 8-ohm pairs of speakers in your calculation. So if you had two pairs of 4-ohm speakers each with an Impedance Matching Volume Control, you would select 4X for each Volume Control. One other factor you need to consider. The SVC100 rated at 50 watts RMS, continuous power with 100-watt peaks. If you have more than 50 watts a channel, you would need to step up to the SVC300. The problem with too much power is the volume control will saturate before it becomes inaudible and cause distortion. So the two things to consider, one how many 8 ohm pairs am I connecting in Parallel and second how much power do I have per channel. I hope that helps: TL/5269
Submitted by: Tim Leahy on November 3, 2018

from Virginia Beach, Virginia asked:
August 21, 2018
I am connecting my new SVC100 slide volume control (replacing an old rotary control) to two sets of outdoor speakers which share one set of output lines from my amp. The wires are spliced together in my attic. Am I right in setting the switch to 4X?
1 Answer
Hi Robert: The Impedance Matching Volume Control, number settings refer to number 8 ohm stereo speaker connections. I am assuming your two pairs of speakers are most likely 8 ohms so your number choice should be 1/2X. TL/5177
Submitted by: Tim Leahy on August 22, 2018

Dawn Hocutt
from Winfield, AL asked:
June 26, 2018
What type of box will I mount this into in new home construction?
1 Answer
Hi Dawn: A standard J box either Metal or Plastic will work. TL/5076
Submitted by: Tim Leahy on June 26, 2018

T J Franken
from Naples Fl asked:
March 3, 2018
I currently have soundolier attenuators model #331735 and need to replace the one on my lanai (its 24 years old)....will your Svc 100 work? Looks similar to what I already have. I tried one from another company with different wattage and could not get it to work.
1 Answer
Hi TJ: The SVC100 should work fine but would recommend adding an outdoor weatherproof housing. As you can see by your image there was quite a bit of rust. Both the Soundilier and the SVC100 are not outdoor volume controls We have dedicated outdoor volume controls but would not drop into the single gang opening you have in your stuccoed wall. But a weatherproof housing would work. here is the link for the weatherproof box (it is pictured with a AC receptacle but the VC would work as well. Taymac Weatherproof Single Outlet Cover Outdoor Receptacle Protector TL/4830
Submitted by: Customer Service - Q&A on March 3, 2018

from Edmonton,Alberta asked:
December 26, 2017
Just looking to confirm this volume control will handle two 250 watt/4-8OHM speakers....and if so, would I need two or four wires leading from the volume control to the amp?
1 Answer
Hi Darcy: When purchasing Impedance matching Transformer style Volume Controls you want the highest value available. So the SVC300 is the best for your application. If you are undervalued you will saturate the transformers before the sound becomes in audible and will distort at low listening levels. TL/4714
Submitted by: Customer Service - Q&A on December 28, 2017

from Birmingham, Alabama asked:
July 15, 2017
Can I add 2 pairs of speakers to 1 volume control?
1 Answer
Hi Ryan: Yes you can connect a second pair of speakers to this volume Control. I would first recommend stepping up to a SVC300. Then you need to look at what else you are planning to do. Is this only two pair speakers connected or is there more to the story. We do not recommend connecting more than two pair of speakers to a volume control. There are other factors, what is the impedance of the pairs, are they the same? What are you connecting it to, Zone 2 of a A/V Receiver or to a 2 channel power amplifier like our High Current AMP200. Is there a speaker selector involved as well? Let me know if here is more to your system, TL/4470
Submitted by: Customer Service - Q&A on July 21, 2017

from blackfoot, idaho asked:
December 5, 2017
I just purchased the 4 zone home audio kit with these volume controls and have a question about how many wires I need to hook them up. I am currently in the middle of building a home and was trying to be proactive with running wires before they sheetrocked however my knowledge on this stuff is very limited. I only ran one wire from where the receiver/amplifier will be to where the volume controls will be in the wall. However, looking at the diagram for this volume control it appears that I need to have two wires running from the receiver/amplifier to where the volume controls are. Is this correct? The house is now sheetrocked and won't be easy to go in and try to run another wire. Do I have any other options?
1 Answer
Hi Cody: Ultimately you have to run four conductors from start to finish; AMP to Speaker Selector to Volume control then to two speakers (Right and Left) To do this you have two choices for basic cable design, either a single four conductor cable (color coded; red, black, white and green) or (2) two conductor cable (each coded red & black). Typically the most popular gauge size is 16 gauge. The rule of thumb here is 16 gauge works best uop to 80 feet. above 80 feet you can go with a larger 14 gauge up to 200 feet before going to a 12 gauge. Note both the Speaker Selector and Volume control connectors work best with 16 gauge. The single four conductor is the best choice between Amp/Speaker Selector/VC. Then two conductor cable to the individual right and left speaker. Some people run four conductor for all connections (only using 2 of four conductor for Volume control to the individual speaker). I hope that helps. And I hope you ran the four conductor to the volume controls. TL/4679
Submitted by: Customer Service - Q&A on December 5, 2017

from Sarasota Fl asked:
November 28, 2017
Have external carver amp. 5 channel 80 watt per for five zones. Each zones has jbl 28 200 watt 8 ohms. In line i have pyles speaker selector switch. The setting on each volume control on a vms 100 should be 4 x ? . Is this calculated ( impedance) speakers per zone or total speakers on all zone hooked on amp. Thanks
1 Answer
Hi Steve: I am a little confused by your description. You have a CARVER 5 Channel amplifier with each amplifier powering a JBL Control 28 Indoor/Outdoor. You mention a Pyle speaker selector switch which most of the PYLE Speaker Selector boxes are single source 2 channel input. Then you mention impedance setting for VMS100. But the link to your question was the SVC100. Note, both the SVC100 and VMS100 are Impedance matching stereo Volume Controls. So what is the end game here. What are you using as your source. What is connected to the five different inputs on the 5 channel amplifier? Please let me know so I can better aanswer your question. tim@osdaudio TL/4670
Submitted by: Customer Service - Q&A on November 29, 2017

Karen Melick
from Santa Monica, CA asked:
October 25, 2017
I ordered this SVC100 Volume Control to replace a NXG NX-V70 Volume control that was not working (one of the two speakers connected to this NXG VC was silent). When I installed the SVC100 both speakers connected to it play but the volume control does not change the volume of the speakers at all. It's the same volume with the switch setting at each of the 3 switch settings 1/2x, 4x or 8x. This volume control runs back to a pyle speaker switch without volume control. There are 5 sets of speakers going through the speaker switch and the other 4 sets work fine with their NXG NX-V70 volume control. Unfortunately that volume control is no longer available. Why doesn't this SVC100 volume control work for me?
1 Answer
Hi Karen: It sounds like you have it hooked up backwards. Check to make sure the leads coming from the Speaker Selector is connected to the inputs of the SVC100 and the speakers are connected to the Output side. Please let us know if that helps. TL/4608
Submitted by: Customer Service - Q&A on October 26, 2017

from Canada asked:
July 11, 2017
I'm looking at adding something to my RV to control the different zones that it currently has. I find the speakers in the RV are to loud and the ones onutside are too quiet. It is the typical car stereo set up. 12Volt DC supply. Each speaker is controlled with its own feed. Each zone (3 in total) has two speakers each with its on feed (Left/Right). Would something like this work? Thanks.
1 Answer
Hi Tan: In order to answer your question, would nee additional info. First are we talking about three zones with two pairs each per zone? Did you wire the two pairs per zone in Parallel (Parallel doubles output, series cuts it in half). Will need to know which speakers you are using, Brand and model number (a 4 ohm speaker will play louder than a 8 ohm speaker).What we will be able to tell from the specs of the speaker is the sensitivity of the speaker. Typically sensitivity is measured in decibels usually between 86 and 92 dB. The higher the number (say 91 dB) the more efficient the speaker and will play louder than a speaker rated at 88dB (3dB is doubling your power) Lastly you need to understand the speakers in the RV are in an enclosed space and will play louder than the speaker outside since it is trying to fill a much larger area. The single volume control will not help you in this application... TL/4465
Submitted by: Customer Service - Q&A on July 20, 2017

Phil elliott
from Anna, texas asked:
April 4, 2016
Im about to set up an 8 zone whole home audio system using 8 pairs of ICE610 speakers. Will these volume controls work? Just curious about the wattage per channel...not sure if the speakers need to be higher watts or maybe volume controls need to be more watts per channel.
1 Answer
Hi Phil: There are other variables to consider, are you using a speaker selector and what is your power source? What are you planning for the whole system? Will this be connected to a Home Theater Receiver or a dedicated amplifier/receiver? It would help to know what the other components you have or are planning to purchase including Brand name and model numbers. Help me understand your concept, what you are trying to accomplish, what is your application. Thank you in advance TL/3797
Submitted by: Customer Service - Q&A on April 5, 2016

from Fort Mill SC asked:
January 17, 2016
How do I test this
1 Answer
Hi Jim: You would have to connect speaker wire from the amplifier to the inputs on the SVC100 Volume Control then connect speaker wire from the SVC100 outputs to the inputs of the speakers you want to control the volume on. Make sure you turn the volume knob clockwise till it stops (fully open, actual volume from the amp). Turn your amp/receiver on and If music is playing it is connected correctly. Then start turning the knob counterclockwise slowly one click at a time. Each click should reduce the volume 3 to 6 db depending on the click until you hear no sound which depending on your volume levels on the amp may be one or two clicks before the knob stops. Now you have tested the Volume Control. Note these volume controls are antenuators, where they reduce the volume by diverting the signal into the transformers. There is no power to these volume controls they are passive devices. TL/3665
Submitted by: Customer Service - Q&A on January 22, 2016

from Valdosta, ga asked:
October 24, 2015
I'm going to be using my Onkio receiver to power 2 pairs of Polk Audio RC80i, one set in the master bath channel A and one pair on the back porch. I'd like to run one of these volume control on each channel, two total. I would run both volume controls at x1, correct? Thank you!!
1 Answer
Hello Scott, If you are running 2 pairs of speakers, go ahead and set both of the volume controls at 1/2x!
Submitted by: Customer Service - Q&A on October 26, 2015

from asked:
September 25, 2014
how long is the warranty on the SVC 100
1 Answer
Hi Bill, Our indoor volume controls have a 5-Year warranty. Thanks!
Submitted by: Customer Service - Q&A on September 25, 2014

roger smith
from florida asked:
August 6, 2014
I am going to have my left and right speaker in two adjacent rooms that are separated by a door. Can I use one volume control for each speaker? Basically it would be a volume control for the left speaker and a volume control for the right.
1 Answer
Hi Roger, That would create a 16 ohm load back to your amp/receiver, which most receivers aren't built to handle but if it could, then that should be fine. Understand that you would be separating stereo though.
Submitted by: Customer Service - Q&A on August 11, 2014

from Bowie, MD asked:
July 2, 2014
house was pre-wired with 6 zones, one pair of speakers per zone. There are OSD VCs and speaker selector. The receiver was a Sherwood Rx4109. The system as setup caused the Sherwood to become inoperable. Tried a Pioneer receiver. Same result. Put in a Dayton Audio 12-channel amp, with 40 watts per channel. The system sound has static and the warning lights on the front of the Dayton amp flash from blue to red, to blue, to red (blue being the normal operation indicator) within minutes of powering the system on. I think the speakers are OSD, but they're in the ceiling and I have not pulled them yet. The VCs have SVC-70 SHH-009 printed on the circuit board, so I assume that's the model. Any suggestion to get this whole house system functioning optimally (one zone does feature speakers mounted outside on the deck).
1 Answer
Hi Mark, You can't run a system like that with a receiver. You'll need a high-current amplifier. Check out our AMP300.
Submitted by: Customer Service - Q&A on July 2, 2014

from Butte, MT asked:
June 14, 2014
Want to attach 3 pairs of model AP450 or AP490 speakers to my older JVC RX662V. This receiver has an output of 110 watts per channel into 8 ohms. This receiver has 2 buttons for 2 sets of speakers. These new speakers would alone be on this second circuit. My GUESS is the amp can handle it since the surround sound side is driving 6 speakers with ease. Since I want volume control, is the impedance-matching control the way to go? However, Viewing the on-line Owners Manual, I don't have a clue as how it should be wired. THANKS!
1 Answer
Hi Ed, It's actually unlikely that the receiver can handle more than a pair of speakers per zone. If you have only the one extra zone available, running more than a single pair of 8ohm speakers could fry your receiver or damage the speakers. The surround sound side is different because each speaker has its own output, whereas the second zone only has outputs for two speakers. In our opinion, you should run an external amp to power these outdoor speakers safely. You can run something like our AMP200 or the SW-RX5502. Let us know if that helps. Thanks! BM 2750
Submitted by: Customer Service - Q&A on June 17, 2014

from BC asked:
October 4, 2013
I am totally confused about the impedance settings!! I have purchased 3 of these VC's and 3 dual voice coil ICE800TTWRS Stereo speakers. I will be running all 3 from my Zone 2 connections from a Yamaha RX-V673 amp. a) Can I just connect all 3 straight to my amp? b) What Impedance setting should my VC's be set on? The stereo speakers have an 8Ohm Impedance, but is that per coil or per speaker?? Thanks in advance for any help. I don't want to blow my amp up!!
1 Answer
Hi Graeme, Thanks for asking! First of all, I would advise against running all 3 of these speakers off the Zone 2 of your receiver, as that zone is probably only intended to run 1 pair of 8ohm speakers, which in your case would mean on dual tweeter speaker (contact Yamaha to confirm). What you need is an external amp that will be dedicated to these dual voice coil speakers. Check out the AMP200. As for the volume controls; you want to set each according to how many pairs or dvc speaker you are running. In your case each should be set at 4x, because you should round up. Let us know if this helps. If you have any further questions, please let us know. Thanks! -BM 2260
Submitted by: Customer Service - Q&A on October 17, 2013

from St. Louis MO asked:
September 11, 2013
Can this Volume Control wired into a single speaker? I want it to be in stereo. Thanks,
1 Answer
Mike, You can't get stereo sound out of a single tweeter speaker. You will either need a dual-tweeter speaker or you would need to run two speakers. Call for details. Thanks. -BM 2215
Submitted by: Customer Service - Q&A on October 15, 2013

from new jersey asked:
September 8, 2013
Have a question, if i am using this on 4 speakers do i need to have two speaker volume controls or i can i do it on one . right now the set up is i am using the b channel on my amplifier and going to your speaker selector switch then out to my 4 speakers . was putting the volume controll after the selector switch which is how i need to do it . any hepl will be appreciated .
1 Answer
Hi Stephen, First, I would just like to mention that a lot of receivers aren't built to power multiple sets of speakers off the B zone. Typically they are intended to have a single pair of speakers running at 8ohms. Anything more can affect the receiver and or speakers over time. Many of these receivers will specifically warn against it in the owner's manual. They may mention speaker selectors too. That being said, you can run 4 speakers off a volume control (in parallel), but it would be best to run that with the SVC300, not the 100. Thanks. -BM 2205
Submitted by: Customer Service - Q&A on October 15, 2013

from Eatonton, GA asked:
June 17, 2013
I am hooking up a Yamaha A-S300 integrated amp with six speakers - 2 pair of Polk OWM3s on Channel A, and 2 outdoor Yamahas on Channel B. I would like to put the two pair of Polks in two different rooms, each with their own set of volume controls. The amp is 2x60W RMS. The plan is to run Right and Left from Channel A out to two volume controllers, each with their own pair of speakers. Is there any problem with doing this, and what is the best way to wire this successfully? Thanks.
1 Answer
Hi Mark, Receivers have as many outputs as speakers they can drive. We would not recommend putting two volume controllers on one channel. Consider buying the AMP200 instead. Unlike your receiver, this high current amp can handle doubling up on one channel. With your current receiver, you can add this volume control to one pair per channel. CL/MA 1984
Submitted by: Customer Service - Q&A on June 20, 2013

from Raleigh, NC asked:
June 10, 2013
I have new construction and need two volume controls for the outdoor speakers, both are outside and in covered areas, would these be ok to use. They are not exposed to rain. The boxes are already flush mounted. I thought I read something about these not being able to turn volume up, only that correct?
1 Answer
Hi Andy, The volume control is a passive devise. It does not add power; rather it attenuates what power it is given. Turn the volume all the way up on the control. From your amp, turn the volume to the maximum level you would ever want. Then at the volume control, turn it down to a comfortable level. This technique gives you room to go up and down in volume as you please. CL/MA 1960
Submitted by: Customer Service - Q&A on June 11, 2013

from Seattle asked:
February 26, 2013
I have an 8 channel (100 watts each channel at 8 ohms RMS) amplifier. I have 6 pair of speakers with 8 ohm impedence and 2 pair of speakers with 6 ohm impedence. I have bought 8 SVC 100 volume controller. What jumper settings should go on each of the volume controller and how should I connect the pair of speaker to each volume controller? (in series or parallel?)
1 Answer
Hi Kosh, Set all the switches to 2x and wire each of the switches stereo left and right as you would normally. MB/MA 1661
Submitted by: Customer Service - Q&A on March 1, 2013

from Los Angeles, CA asked:
January 2, 2013
I have patio speakers (8 ohm) and inside stereo speakers (4 ohm) connected to a speaker selector with impedance protection and my problem is the inside volume is much louder than outside. I am using a 5.1 surround sound receiver to drive them connected to the main left and right channels. Will this impedance matching volume control even out the mismatch volume. I intend to connect it only to the pair of speakers on the patio leaving the inside speakers unaffected so I don't have to remember to check the volume controller when using the surround sound for movies. Thanks, Loren
1 Answer
Hi Loren, The issue is that the 4-ohm speakers will play almost twice as loud as the 8-ohm speakers you have outside. The volume control is a passive device that does not add gain; therefore, whatever the volume you have playing through the system, you will only be allowed to turn the volume down, not up. You really need to use the volume control with the inside speakers so you can turn them down. I would recommend using our VKR120 resistor-based volume control while continuing to use the speaker selector with the protection enabled. This way, you can listen to the outdoor speakers as loud as you want and use the VKR120 to attenuate the inside speakers to an acceptable level. You can turn the VKR120 to full off (all the way counter clockwise until it stops) as well. In theory, it also sounds better than the transformer impedance- matching volume controls. TL/MA - 1508
Submitted by: Customer Service - Q&A on January 2, 2013

from quebec, quebec asked:
December 12, 2012
Is there a mute mode on these? Is it possible to turn the volume to 0? Thanks
1 Answer
Hi Simon, The SVC100, SVC300, OVC100 and OVC300 models do not turn off when you rotate the knob counterclockwise. They will turn the sound down so you no longer hear the music but the current is being diverted to the transformers. That is why we recommend if you are using a speaker selector, you should use the on/off switch to turn off the zone when you're not going to listen for extended periods. We do have SVC205 impedance-matching volume control featuring an actual on/off switch on the front of the panel. These cut the signal completely. Our resistor-based series, including the VKR120K and OVC305R, do turn off when rotating the knob all the way counterclockwise until it stops. These are considered our best sounding volume controls but do not have impedance-matching capability. TL/MA- 1460
Submitted by: Customer Service - Q&A on December 13, 2012

morgan meeks
from Buford, Georgia asked:
November 16, 2012
I was wondering if these svc100 volume controllers have transformers on the back of them do the speakers that I hook them to have to have a 70v transformer as well and these will work with 70v systems right? Thanks
1 Answer
Morgan, The SVC100 are Stereo 8 ohm Volume Controls. For 70 V systems use our model number OSD-MONO70-VC (now back in stock as of today) CL1382
Submitted by: Customer Service - Q&A on November 19, 2012

George Balli
from Ajax,ON.Canada asked:
November 11, 2012
I want to install 2 speakers in my kitchen, 2 in the living room and 2 outside on the patio. If i have a receiver from my home theater system, do I still need another one or an amplifier? How should I wire them?Which control system would you recommend and which volume control?
2 Answers
Hi George, If you are using your existing receiver for your home theater surround sound system, you'll need to add an amplifier for your whole house speakers. You could add another receiver but for whole house audio, you won’t need features such as surround sound processing, which is more applicable to home theaters. Our AMP200 2-channel amplifier would do the trick. The DSM4 speaker selector lets you add up to 4 pairs. You would wire each speaker with a direct line (home run) to the volume control and then to the speaker selectors. CL/MA 1371
Submitted by: Customer Service - Q&A on November 12, 2012
Hi George, If you are using that receiver for your surround sound, then it sounds like you need to add an amplifier for your whole house speakers. Our AMP200 would do the trick, with our DSM4 speaker selector- giving you room for up to 4 pairs. You would wire each speaker with a direct line (home run) to the volume control and then to the speaker selectors. CL 1371
Submitted by: Customer Service - Q&A on November 12, 2012

from Phoenix, AZ asked:
August 7, 2012
I want to power two pairs of 8 ohm speakers, one outdoors and one indoors using zone 2 of my receiver which can handle 6-16 ohms. Can I use two of these and set one of them, for the outside, to 1x and the other for the inside to 4x so that the offered load to the receiver is 6.4 ohms? The reason for doing this I thought was to give more power to the outside speakers. I got 6.4 = 1/(1/(8x1) + 1/(8x4)) = 1 / (1/8 + 1/32) = 1 / (0.15625) = 6.4. Or is best just to set each to 2x? Thanks
1 Answer
Hi Brett: I would purchase an OVC100 for outside and an SVC100 for inside. I am not sure if the settings you are proposing will have the desired effect on the output of the two speakers, it is an interesting theory. Typically you set the impedance settings based upon total number of 8 ohm speaker (in the case of 4 ohm speakers they count as (2) 8 ohm speakers) you will be connecting in parallel. I am thinking you set both to 2x and see what you think. Setting the inside pair to 4x would not cause any damage so it might worth the try. TL
Submitted by: Customer Service - Q&A on August 8, 2012

Jeff Sweater
from Lititz, PA asked:
April 20, 2012
Hi TL, One last question on this 3 speaker layout to make sure I have thoroughly beat this horse to death. Attached is a wiring schematic is created as reference to make sure we are on the same page. You said I should buy 3 of the dual voice coil speakers (ICE640TT) and I should run 4 conductor wire to one speaker (lets say speaker S2) and then only 2 conductor wire to the other two speakers (speakers S1 & S3). I was wondering what the reason was for having speakers S1 & S3 as dual voice coils when you are recommending I only power one voice coil on each of these speakers? Couldn't I just use two single, 8 ohm voice coil speakers and one dual voice coil set to 16 ohms instead?
1 Answer
Hi Jeff: The advantage of theses Dual Voice Coil, Dual Tweeter speakers is when you connect only a single voice coil both tweeters are still playing giving a broader dispersion pattern beneath the Speaker itself. This would be considered an upgrade over a standard stereo pair featuring just a single tweeter. You can certainly use a combination of a pair of ICE640s and a single ICE640TT as you suggested. This would also be a little more affordable. You would not be wrong going either way. TL
Submitted by: Customer Service - Q&A on April 20, 2012

Jeff Sweater
from Lititz, PA asked:
April 12, 2012
Thank you for your responses. I'm going to run 2 speakers from volume controller in the Dining Room, and two from volume control out to the Patio. I want to install 3 speakers in our Kitchen/Breakfast Area, but if that is more painful or expensive than it is worth, then only installing 2 speakers in the Kitchen would suffice. Jeff
1 Answer
Hi Jeff, There is a simple solution. Run three each of our ICE640TT in the kitchen. Connect them together after the volume control. On two of the speakers you will connect only one of the voice coils (there is a16/8 ohm switch on the back of the speaker, set it to 8 ohm). On the third speaker, use a four-conductor cable making sure to connect both voice coils and setting the switch on the back to 16 ohm. Take a short length of four-conductor cable from the volume control then bundle the positives for left and right and the negatives for left and right so they are connected in parallel. You should not have a problem since the volume controls are set to 4X, which is how many pairs you have for the total system. If you were to add another pair to the fourth zone of your speaker selector, you would have to change all your settings to the 8X. The beauty of the DVCs is they also feature Dual Tweeters, which increases your coverage directly underneath the speaker. We have these available in both 8" and 6.5" TL
Submitted by: Customer Service - Q&A on April 12, 2012

Jeff Sweater
from Lititz, PA asked:
April 12, 2012
I'm going to run three zones of speakers in the house that I'm building for the kitchen, dining room, and outdoor patio speakers with my B speaker output (an 8 ohm, 90 W amplified signal) from my Onkyo 607 receiver (these I’ll use the A speaker outputs on my receiver to power ODS ICE660 speakers in my living room for surround sound). I'm trying to do it on the cheap for now and will purchase an amplifier to power these three zones if I find my receiver is not powering these speakers as well as I'd like. I'm going to run the amplified signal from my receiver to a 4 zone OSD speaker selector switch, and then run in-wall speaker wire to a SVC100 OSD volume controller within each room/zone. With that said I have the following questions: 1. Can I run a 2 conductor wire from the speaker selector to the volume controller, and then run two conductor speaker wire to each 8 ohm speaker so they are in parallel? Or does that not provide me any advantage and I should just daisy channel these speakers in series and save the wire? I know I can get 4 conductor speaker wire and run it to the volume controllers, but I’m not sure what that really gains me? 2. Is there is anything I’m missing within the layout I discussed above, or are there any other things I should consider? Thanks! Jeff
1 Answer
Hi Jeff, How many speakers are you running in each room? If you only have a location for a single speaker, then you should consider our Dual Voice Coil Stereo speakers: In-Ceiling (ICE640TT), Patio (AP550TT) or Rocks (RS850TT). You should be using four conductor 16 gauge wire from the Onkyo (2nd zone speaker level output) to the Speaker Selector (recommend DSM4). Then run four conductor 16 Gauge (single cable with four internal conductors) to each Volume Control (Left, Right, +/-). Next, connect either 2 conductor if you are connecting a stereo pair in the zone or run four conductor to the Dual Voice Coil speaker. You’ll want to run your system in stereo since that is the output from your Onkyo. Then make sure to set the Impedance setting on the Volume Controls to 4X. Make sure to turn the protection switch on the DSSM4 to the Off position (disable) since the Volume Controls are handling the protection. If you are not happy with the output, then you can look to add an external amplifier that can connect to the ONKYO 607 Pre-Amp Outputs for Zone 2. You would then connect the external amplifier to the Speaker Selector (either our AMP150 or AMP200) and drive the Volume controls and Speakers in the same setup. Adding with no subtraction. We stock both the 16/2 and 16/4 CL3 speaker cable in 50, 100 and 500 feet. TL
Submitted by: Customer Service - Q&A on April 12, 2012

Pat Wright
from Mobile, AL asked:
March 1, 2012
I am having trouble with Bose 151 speakers. When I hook them up two of four speakers work. On the first receiver I thought one side of the receiver was bad. It appeared the left side was gone. I then hooked up a different receiver and had the same problem. I was told I need a impedance matching volume control. Will this correct the problem?
1 Answer
Hi Matt, Keep in mind that the speakers you have are 4 ohm so you'll need to check if the receiver you are using is stable at 4 ohms. Also, how are you wiring the speakers? You wouldn't want to daisy chain them; instead, do home runs for each speaker (connecting to its own dedicated channel). If that doesn't help, try swapping the speakers on different channels to rule out that the speakers are not defective. CL/MA
Submitted by: Customer Service - Q&A on March 1, 2012

scott shane
from waukesha asked:
February 13, 2012
Our church wants to put a speacker with a volume controller switch in our nursery can you hook this up to a sound board??
1 Answer
Hi Scott, First, you need to determine if this is a 70V system or 8 Ohm. 1) If it's a 70V system, you'll need a mono volume control such as our OSD MO70V. Make sure the speaker has a 70V tap (check out our 70V speakers) and then connect the volume control in the nursery before connecting to the speaker. Note: if this is a two-conductor connection (+/-), then it is most likely 70V. 2) If this is a four-conductor connection (+/-, R & L), then the SVC100 should work (8 ohm system). Make sure to set the impedance matching switch to 1/2X. TL/MA
Submitted by: Customer Service - Q&A on February 14, 2012

from CO. asked:
February 4, 2012
Can I put 2 pair of speakers on 1 svc100?
1 Answer
HI Ken: Yes you connect two 8 ohm speakers with this volume control. The power rating (100 watts) pertains to the amplifier or receiver that you are using. If you were running a 150 watts plus you would want to step up the SVC300. Note, If these are the only speakers you are connecting to the system then set the impedance matching to 1/2X. The speakers should be run in parallel (connecting the positives together and the negatives together seperately) The amplifier should still see an 8ohm load.
Submitted by: Customer Service - Q&A on February 6, 2012

from Ohio asked:
January 6, 2012
Does this control turn the speakers off the the volume is all the way down?
1 Answer
Philip, This volume control would regulate the electrical current your speaker is receiving, If the volume on your amp / receiver is up and the control is all the way down, there could be a very minimal amount of volume still noticable (less than 10%) Although we do have a volume control with an On/ Off feature.Take a look at the SVC205. CL
Submitted by: Customer Service - Q&A on January 6, 2012

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