Mobile Navigation
My Account

1.888.779.4968

Call for Help
Home / Product Category / Whole House Audio / Volume Controls / In-Wall Volume Controls / OSD Audio SVC100 100-Watt Impedance Matching Decora Style Rotary Speaker Volume Control Kit with White, Ivory and Almond Colored Plates

OSD Audio SVC100 100-Watt Impedance Matching Decora Style Rotary Speaker Volume Control Kit with White, Ivory and Almond Colored Plates

Product code: OSD-SVC-100

In Stock
Free Shipping
OSD Price: $19.95
Compare at: $39.95 You Save: $20.00 (50%)
Sold in single 1 = 1 pc
Qty:
Color: 
30-Day Money Back Guarantee
LIFETIME TECH SUPPORT

Features & Specifications

Features

. 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.

Specifications

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.

OWNER'S MANUAL

  View Owner's Manual            Product Information

QUESTIONS & ANSWERS

By Philip from Ohio on January 6, 2012
Does this control turn the speakers off the the volume is all the way down?
By Customer Service - Q&A on January 6, 2012

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

By George Balli from Ajax,ON.Canada on 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?
By Customer Service - Q&A on November 12, 2012

Answer:
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
By Customer Service - Q&A on November 12, 2012

Answer:
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

By morgan meeks from Buford, Georgia on 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
By Customer Service - Q&A on November 19, 2012

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

By Ken from CO. on February 4, 2012
Can I put 2 pair of speakers on 1 svc100?
By Customer Service - Q&A on February 6, 2012

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.

By Rick from Indianapois, in on December 9, 2012
I have run my home on the following for about 6 years until my tuner fuses burned out. I never
Could run the volume too high or the Protect warning on my amp would shut it down. So I never ran
The tuner more than 50 % volume. Heck, it would affect my fluorescent light in the room it was in.

I have 5 rooms, each with the transformer type volume controls. A separate run from the selector box to each volume control then out from each volume control to 2 speakers (left & right).

I had set the volume controls to x8. However, after my amp failed, it's fried, I tested the ohms on the system.
I checked the output from the selector to the tuner ( tuner removed) and I was getting a reading of about 2.9 to 3 ohms. According to the chart, I should be getting around 7.5 ohms.

So I set them all to 16x then read them again to get about 1.9 ohms. I don't get it, my tuner
Is rated for 8-16 ohms. That's way to low. At 16x if I read one set alone I get about 15.5 to 16 ohms. Turn on two sets I get around 8.9 ohms, the third set halves it again and so on.

My point is, any more than 2 rooms ( 2 pairs of speakers) those volume controls are not raising the impedance like they should. Am I not seeing something here. I really think the tuner was overloaded for a long time and it just gave up. I want to be sure I have these wired correctly before plugging in another tuner.

One note, when set to 8x, If I switched the selector protection on, I would get about 8 ohms.
By Customer Service - Q&A on December 11, 2012

Answer:
Hi Rick,
Can you supply us with more information? We’ll need to know the model receiver, speakers, and volume control and speaker selector before we can tackle the issue. Are you enabling the protection switch? Let us know so we can give you an accurate answer.

TL/MA - 1457
By Customer Service - Q&A on December 11, 2012

Answer:
HI Rick:

Can you supply us with more information, What Receiver are you using. Whose Volume Controls (are we to assume they are SVC100's) are you using? What Speaker Selector and are you enabling the protection switch. What speakers are you using. I want our acoustic engineer to chime in on this one but need the additional information before attempting to tackle the issue.

TL - 1457

By scott shane from waukesha on 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??
By Customer Service - Q&A on February 14, 2012

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


By Simon from quebec, quebec on December 12, 2012
Is there a mute mode on these? Is it possible to turn the volume to 0? Thanks
By Customer Service - Q&A on December 13, 2012

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

By Jeff Sweater from Lititz, PA on 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

By Customer Service - Q&A on April 12, 2012

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

By Jeff Sweater from Lititz, PA on 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
By Customer Service - Q&A on April 12, 2012

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

By Brett from Phoenix, AZ on 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
By Customer Service - Q&A on August 8, 2012

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

Product Reviews

OSD Audio SVC100 100-Watt Impedance Matching Decora Style Rotary Speaker Volume Control Kit with White, Ivory and Almond Colored Plates
$19.95
4.5 Stars based on 33 Review(s)
Davis Rivera
Florida
5 Stars
I would recommend this item to a friend.

Excellent product
February 25, 2017
Great control

Bill Hughes
Central Florida
4 Stars
I would recommend this item to a friend.

Good product, great value
June 6, 2016
Simple to install and works very well. I wish the small phoenix clips that hold the wire were a little stronger...they sometimes don't do the job.
Best Uses:
Residential audio distribution

JP
Downs, IL
5 Stars
I would recommend this item to a friend.

Good Performance
April 21, 2013
The item was easy to install. The volume control has nice distinct stops for control.
Pros:
Came with almond, white, or beige plates and knobs.
Best Uses:
Home all home speaker system.

Kevyn
Sacramento, CA
5 Stars
I would recommend this item to a friend.

Works fine, good product, good value
April 19, 2013
Have installed a number of these in whole house sound system. A little tight to wire up but once installed work great.
Pros:
Value, Wall plate color selection, functionality
Cons:
Could be designed a bit easier to wire up.

Ladd Novak Construction
Truckee, CA
5 Stars
I would recommend this item to a friend.

Great for New Construction
April 19, 2013
I am a General Contractor in Northern California and I always include whole house sound systems in my houses. I always buy my speakers and Volumn Controls from OSD, they are not only an easy product to install but the price works with my busget. As far as shipping goes, its always on my door step 2 days after I order.
Pros:
Price and speedy shipping
Cons:
N/A
Best Uses:
New Construction

Chris
Pittsburgh
5 Stars
I would recommend this item to a friend.

Good quality. Great buy
April 10, 2013
Item shipped fast and arrived as described. I have 4 volume controls and have had zero problems.
Pros:
Connectors are easy to work with. Attenuation is flawless.
Cons:
None

Dan
Florida
5 Stars
I would recommend this item to a friend.

Controls
April 5, 2013
Product worked great :))

Darryl
Viera, FL
4 Stars
I would recommend this item to a friend.

Good Product & Great Service
March 27, 2013
Works good, reasonable price, great service... can't ask for more than that!
Pros:
Works as advertised
Cons:
Nothing yet!

Pat
Portland, Oregon
4 Stars
I would recommend this item to a friend.

Volume Control Works Fine
March 21, 2013
Volume Control Works Fine

MC
Portland, OR
4 Stars
I would recommend this item to a friend.

Very Clean, Very Functional
August 27, 2012
This control is great. Always be prepared with the proper sized tools such as a very small screwdriver for work with these types of controls. Also always use the proper gauge of wire - too big is too big! The depth of the control can be a little challenging depending upon your application. I installed one of the volume controls in my gazebo next to a hot tub thus needed a weatherproof enclosure. The depth of the control prohibited use of an off-the-shelf solution. I instead used two waterproof enclosures bolted together to provide sufficient depth to accommodate the control. Looks great and works great.
Pros:
Easy To Set Up, Easy To Use
Cons:
Depth can be an issue
Best Uses:
New installation

Bigrig
Baton Rouge, LA
5 Stars
I would recommend this item to a friend.

Nice unit for the price.
July 31, 2012
Had volume controls on my outddor speakers, but my indoor speakers are more efficient and I could not match the volume. No shop had a volume switch that came after the preamp. This is a great unit at a great price. Solved all my problems with volume.
Pros:
Easy To Use, Easy To Set Up, Quality Construction

peter
victorville
5 Stars

great quality
March 19, 2012
good quality for a great price
Pros:
Easy To Set Up, Quality Construction
Best Uses:
Replacement

ICTGolfer
Wichita, KS
5 Stars
I would recommend this item to a friend.

Fantastic value and great sounding
February 24, 2012
Easy installation and great sounding from my 14' vaulted ceiling. Couldn't be happier.
Pros:
Easy To Setup, Quality Construction, Easy To Use
Best Uses:
Whole house audio

45Auto
Lake Charles, LA
5 Stars
I would recommend this item to a friend.

Excellent Product Great Price
February 14, 2012
Excellent product, great quality, easy to install
Pros:
Quality Construction, Easy To Use, Easy To Setup, Great price
Cons:
None
Best Uses:
Upgrade

N/A
woodlands, tx
5 Stars
I would recommend this item to a friend.

very good volume controler, fast shippin
February 2, 2012
very good volume control, fast shipping
Pros:
Easy To Use
Best Uses:
Upgrade

KeithP
Scottsdale, AZ
4 Stars
I would recommend this item to a friend.

Looks like they would work
October 31, 2011
Screw heads and wire holes are a little too small, but otherwise worked good.
Pros:
Easy To Use
Best Uses:
Replacement

X-Ray Dan
Woodland Hills, CA
5 Stars
I would recommend this item to a friend.

Great prodct, great service
September 5, 2011
These controls work as advertised. The audio input and output terminals can be slipped off the circuit board for ease of connection. Inputs and outputs are clearly marked If you are in a commercial building like mine, some of the walls use 1/2 thick steel studs. There is not enough depth within the wall for the control. I added a surface box and all is well. I'd buy this product again in a heart beat.
Pros:
Easy To Use, Quality Construction, Easy To Setup
Cons:
None

thabeezer
Houston, TX
3 Stars
I would recommend this item to a friend.

Works good
August 25, 2011
This volume control is very easy to instal and use. The fact that it comes with multiple color plates is a bonus. The only drawback to I found is that the terminal block that the speaker wires attach to does not seem to attach well if you remove them to install the speaker wire.
Pros:
Multiple Faceplates, Easy To Setup, Easy To Use
Cons:
Flimsy Construction

Greg
The Great White North
4 Stars

Does the job
August 24, 2011
Enjoy music anywhere in your home without frying your amp! Impedance matching is the only way to go -- this control makes it easy to do it right. Good quality at a great price!
Pros:
Easy To Setup, Quality Construction, Easy To Use

lpfrnk
nj
5 Stars
I would recommend this item to a friend.

Excellent
August 11, 2011
You can not beat the quality and price

SW
Modesto, Ca.
5 Stars
I would recommend this item to a friend.

Switches were exactly as described
August 1, 2011
The web-site was easy to use and very helpful recommendations to get me what I needed.
Pros:
Quality Construction, Prompt delivery, Helpful recommendations, Great price, Exactly as described
Cons:
None so far
Best Uses:
Upgrade, Indoor and Outdoor switch

Chris
Placentia, CA
5 Stars
I would recommend this item to a friend.

3 Color Included!
June 24, 2011
Good build quality and nice sound, I like the fact that all OSD brand volume controls come with three color plats and knobs, I have customers painting their rooms in different colors, no need to order extra colors for inventory.
Pros:
Easy To Use, Quality Construction, Easy To Setup
Best Uses:
Replacement, New Construction, Upgrade

Josh
McKinney, TX
4 Stars

I have three of these. ...
March 14, 2010
I have three of these. Had a problem with two not working initially, but OSD replaced them with no questions asked. They work perfectly. The only reason I give 4 stars instead of 5 is that the color and size does not match perfectly with other decora wall plates. Since I have two zones outside I wanted a dual gang plate and had to modify one from HD to work. It looks OK though. Other than that issue, OSD makes excellent products and I have been very pleased with all my purchases.

Kent
Undisclosed
5 Stars

Got six of these plus the ...
January 28, 2009
Got six of these plus the six room selector. They work as good or better than Speaker Craft and Niles for $80 less each! Three different color plates is a huge convenience. Unreal. I was screwing in the speaker wires directly, struggling with the tight fit, and finally realized the connector base pulls off the pins. Makes screwing in the wires easer. Just plug the bases back onto the unit. Don't mix up the INPUT and OUTPUT labels if you do remove the terminal bases.

Ben
Undisclosed
5 Stars

Always a pleasure dealing ...
April 22, 2008
Always a pleasure dealing with these guys. I emailed some questions to them, before I tore out my walls, regarding how best to wire the house for audio. I received a prompt and explicit description of what I would need to complete the project. A year latter the walls are sealed and I have the best sound system on the block.