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Home / Product Category / Whole House Audio / Speaker Selectors / DSM4 Dual Source 4 Zone Speaker Selector High Performance with Amplifier Protection

DSM4 Dual Source 4 Zone Speaker Selector High Performance with Amplifier Protection

Product code: OSD-DSM4

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Features & Specifications

Speaker selectors allow you to connect multiple pairs of speakers to your stereo receiver or amplifier. This is a great custom feature that lets you listen to any pair of speakers, for instance in the kitchen or bath, or any combination of pairs simultaneously. The DSM4 is a dual source speaker selector with an independent a/b switch per zone. With this unit, you can choose two music sources at each zone.

Ugraded Model with Improved Input/Output Connectors!

The upgraded, European-style removable input/output connectors give you better leverage when terminating cable and accept up to 14 gauge cable.


Other Product Info

Dual source with independent a/b switch per zone - you can choose two music sources at each zone.


  View Owner's Manual          


27 Questions & 27 Answers
Gary Culp
from Dallas/Ft. Worth asked:
November 26, 2018
I have two vintage receivers/amps, a Marantz 2285B (85 w/ch) and a Onkyo A-7070 (70 w/ch), and 2 pair of speakers. Will this unit allow me to drive both set of speakers with either amplifier source? Thanks
1 Answer
Hi Gary: The DSM4 should be ideal for your application. If you limit the connection to just two pairs of speakers make sure the Protection switch is in the off/disabled position (the speaker selector is rated at 140 watts without the Protection, 70 watts when enabled). You will be able to play both speakers with either amplifier or play each pair of speakers one pair of speakers with the ONKYO and the other pair of speakers with the Marantz. Good Choice TL/5305
Submitted by: Tim Leahy on November 30, 2018

Marco Taschini
from Miami asked:
June 3, 2018
Hi, How can I hook up my subwoofer to the selector...? I have two different rooms each with four speakers and one subwoofers and I need to know how to connect those to the selector. The subs are not powered. Please advise
1 Answer
HI Marco: In order to answer your question, I would need a few answers myself. What speakers are you using in the two rooms (Brand and model). What is the passive sub that you want to connect? Are the speaker wires already run to a central location. Are all four pairs wired to a central location or are they daisy chained for each room so only 2 conductors. Are you using Impedance matching volume controls? Please let me know so I can better serve you. TL/5028
Submitted by: Tim Leahy on June 6, 2018

from Jacksonville,Florida asked:
April 28, 2018
I have a whole house speaker system controlled by a central amplifier and a selector switch. In my summer kitchen I have a pair of speakers that are by speaker wire run from the main house amp. I also have a TV in my summer kitchen and I would like to be able to have the sound from the tv come from the two existing outdoor speakers here. Would this allow me to select whether these speakers are fed from my house amplifier or from the outside source? If this is possible,I assume I need a separateoutside amp? Is there a simple inexpensive on you could recommend or is there a better solution?
1 Answer
Hi Kyle: The Dual source function will allow you to pick between the wire coming from the house and an additional amplifier to be mounted in your summer kitchen assuming it would be protected from the elements and you have a AC outlet. You want this to be connected to your Outdoor television. You would have a couple of options for the external amp, number 1 would be adding our XMP100 amplifier and you can connect your TV from either a RCA output from the TV or from the Cable or satellite box you are using for the source to your TV. The XMP100 could be connected to the Source B on the DSM4. You could connect additional speakers to the DSM4 as well. Another interesting amplifier instead of the XMP100 would be our new Bluetooth 2 channel amplifier amplifier that is more compact, also digital like the XMP100, and has additional options like Aux 3.5mm input, RCA Inputs, Digital Fiber Optic (to connect directly to the TV) or Bluetooth Receiver. Plus it has sub woofer outputs in case you wanted to add a sub for the outdoor kitchen. You have a lot of flexibility. let me know if you need additional help. TL/4940
Submitted by: Tim Leahy on May 3, 2018

from Demotte, Indiana asked:
March 31, 2018
I have a home theater system that I also have a turntable hooked up to it. I want to get a old receiver for the turntable but don't want to use different speakers. Can I just hook up the main speakers to this and leave the surround sound, center channel, and sub hooked to the main receiver?
1 Answer
Hi Ryan: The DSM4 should work just fine for you especially if you are connecting just one or two zones. One zone would be your front right and Front left speakers that could be switch between source A (Receiver/Turntable) and Source B (AVR). A second zone could be another room. If you connect the three other zones you would need to use the internal protection switch. But if you limit to Zone 1 and Zone 2 you do not need Protection switch. This is important since the Protection when enabled cuts your power handling in half from 140 watts per channel to 70 watts. Usually the AVR is rated at 95 or 115 watts. Again if this is just to play your turntable or Home Theater through this one pair of speakers checkout our OSD AB-12 which is basically an A/B switch that is bi-directional. So you can run a single source and switch between 2 pair of speakers or in your case connecting 2 sources and playing through a single pair of speakers. This is just a simple AB switch. We also have a Volume Control that does the same thing a SVC-405 but it is an impedance matching volume control and would add a bit of a load. So it is up to you which works best for your application. I hope that helps, good luck TL/ 4884
Submitted by: Tim Leahy on April 17, 2018

Tom Mojzes
from CA asked:
March 3, 2018
Hi, i recently bought your TSM8 Speaker selector but did not realize it is 17" wide and will not fit in my Cabinet. Would it make sense to Purchase (2) of your DSM4 selectors? and have the same control and quality of speaker selection and use? If so can I return the TSM8 and order 2 of the DSM4? Thanks, Tom
1 Answer
Hi Tom: The TSM 8 zone speaker selector is the best choice when you are not using it with impedance matching volume controls. It has the best internal protection featuring Transformers similar to the Impedance Matching Volume Controls. Both the ISS and DSM Speaker Selector are resistor based protected which when enabled cuts the power per channel in half (from 140 to 70 watts) But if you are using Impedance Matching Volume Controls for all zones the DSM4 x 2 will work. What are you using to power your system? Let me know ( more about your system to better answer your question. TL/4831
Submitted by: Customer Service - Q&A on March 3, 2018

Jimmy Cole
from La Vergne TN asked:
January 30, 2018
I have 2 sets of speakers running on a Sony 7.1 receiver currently. One set is in my kitchen and one set is outside. I would like to install my surround sound system for my TV upstairs and have the ability to switch between the 4 speakers I currently have hooked up and the surround sound speakers in the TV room. Would this be a good fit for this product?
1 Answer
HI Jimmy: I need to find out what is the model number of the Sony 7.1 Receiver you are using. I need to know if it features a second zone pre amp out. I am assuming you had the four pair connected to the SONY using as a two channel stereo. Depending on whether you are looking to just have the two current pair of speakers or are planning to add more. Hopefully the Receiver has a Zone 2 pre amp output that I would suggest looking at our AMP200 which has plenty of power and Speaker A (kitchen) and Speaker B (Outdoor). Are you using impedance matching Volume Controls for both the Kitchen and the outdoor speakers. If you add the AMP200 to power the two current zones you will not have to worry about adding volume controls or the DSM4 speaker selector. Those would be something you might need later if you expand beyond your two zones. We can also help you out on your Home Theater Speakers and layout. TL/4777
Submitted by: Customer Service - Q&A on February 5, 2018

from San Diego asked:
February 2, 2016
I purchased the DSM4 and have a 7.1 Dual zone receiver. Which channels on the receiver do I hook up to the DSM4? Would I hook up the front & rear for Zone a on the receiver or hook up both fronts for zone A and Zone B?
1 Answer
Hi Andrew: If you are using the 7.1 Receiver as just a two channel stereo then you connect Front speaker A to Source A. Then connect Zone 2 usually both a pre amp output as well as speaker level most likely channel 6 and 7 (or may have separate output) labeled Surround/zone 2. You will need to connect the Zone 2 from the speaker level output using, you guessed it speaker wire. That would be connected Source B. Then you have a choice of Source A or Source B per room/zone. Each zone features a On/Off switch and A or B switch. You will need to set your outputs on the AVR to 2.1 Stereo output for the front channels (Source A). Note you may have limitations on what you playback on Zone 2/Source B. Check your owners manual to see the limitations. You maybe limited to Analog sources. Depending on your Receiver which most people turn the older versions into stereo Receivers it might not have an app associated with it. You will have to excuse me here I am flying blind since I do not know the Brand name or model number of the Receiver. I would be interested to find out more about your system. Hopefully this helped, please don't hesitate to respond back with the info. TL/3686
Submitted by: Customer Service - Q&A on February 4, 2016

from Houston, TX asked:
December 13, 2017
Hi, I am looking to do the following: - I have 2 zones; each zone with 7.1 speakers set (Front LCR, Mid LR, BLR and SW) - I have 2 receivers (Onkyo and Denon). They both share the BluRay and Multi CD Player (with a switch in between the players and receivers) - I like to be able to use either of the receivers to output to either of the zone speakers in 7.1 format. Can you please tell me what I should buy from your products and the wiring on this configuration?
1 Answer
HI David: You would need four DSM4 speaker Selectors to be able accomplish what you want since you are limited to two sources. And you would only be using two of the zones of each of the speaker selectors. Plus a fourth speaker selector would be needed for the Center channel and you would be using only 1 channel of two zones. Might be easier and more cost effective to split your sources between the two Receivers. Then you could play either or or the same source for both. On the Blu ray you would need a HDMI splitter one input to two output. These usually have a gain stage involved so there is no loss when you split the signal. Also maybe one of your Receivers features a second selectable HDMI output that could be connected to the other receiver as another source. What is the model number of your Receivers (you already stated they are an ONKYO and a DENON). I would think your Blu ray connection is HDMI but not sure of your Multi CD player. It might be fiber optic or Digital Coax. You could split the digital coax but you will need to check the other inputs on your stereo receivers. I would love to sell you four of the DSM4 but its a lot of work and not as practical. TL/4691
Submitted by: Customer Service - Q&A on December 14, 2017

Sam Phan
from San Jose, CA asked:
October 4, 2016
Can I input 2 different amplify into input A/B and output out to the same 1 set of speaker?
1 Answer
Hi Sam: You can connect two different sources to the DSM4. So one amplifier to Source A and the second Amplifier to Source B. You have an independent A or B switch plus dedicated on/off switch per each zone. So as an example you could be playing Source A on Zone 1 and Source B on Zone 2, 3 and 4 at the same time. Or any combination between the two sources. I hope that helps. Note: We also have the SSVC4 with Internal Volume Controls and Dual source per zone as well. TL/4084
Submitted by: Customer Service - Q&A on October 4, 2016

from Riga asked:
May 1, 2016
Hello, I have Yamaha 577 5.1 AV receiver and 2 sets of LCR front speakers. I want to output LCR channels to speaker set 1 for movies and to speaker set 2 for regular TV. Projection screen and TV are located in different parts of the room so each set of speakers is located at its own place. What is best solution for me - should I: 1) utilize the Yamaha's built-in Zone 2 (which is stereo downmix, not 5.1), sacrifice the C channel of the set 2 (i.e. use only L and R channels) and escape all the headache OR 2) use DSM4 in the following manner: use only 1 zone of Yamaha; assign L and R outputs to DSM's input 1, and C output to input 2. Then, connect speaker set 1's L&R to DSM's output 1 and C to output 2; set 2's L&R to output 3 and C to 4, respectively. Is scenario 2) worth trying? Almost forgot: all my speakers are 6 Ohm Yamahas. Or, maybe you can suggest a single switch which instantly routes all 3 channels betweens different LCR sets? Thanks in advance!
1 Answer
HI Olegs: Interesting proposition, you are on the right track with option #1 but the the DSM4 would not be the right choice unless you want to connect four external volume controls needed to do the Impedance matching for the two LCR setups. The better choice would be the SSVC4 which features internal Impedance matching Volume Controls per each zone. The first problem with the DSM4 is by attempting to use the internal protection you cut the power handling in half from 140 watts to 70 watts. So you would need the Impedance matching volume controls to to the heavy lifting especially since you are dealing with 6 ohm speakers (the Yamaha does have a 6 ohm setting). Now the SSVC4 has the same dual source connection so you would connect the Right and Left front speaker to Source A and the Center channel to Source B. TV 1 Left and Right would be ZONE 1 output and TV 1 Center Channel would be ZONE 2. ZONE 3 would be TV 2 Left and Right and ZONE 4 would be TV2 Center Channel. Then if you want to go over the top add a SSVC2 with dual source and 2 Impedance Matching Volume Controls which could control ZONE 1 for Surround channels for TV 1 and ZONE 2 would be surround channels for TV 2. You would even have ZONE B (channels 6 and 7) to run a pair of Speakers in a second room.speakers. You can even connect a sub woofer for each TV either hard wired or a wireless solution like our WSK-100 (not sure if is 110-240V, maybe only 110V). Now the key if you were to go with this is you will need to open up the SSVC4 and make sure the four impedance matching settings are at 4X or even 8X. How often would you be listening to both TVs at the same time. Sorry to be so wordy but if you need further clarification please contact me at Good luck TL/3852
Submitted by: Customer Service - Q&A on May 5, 2016

from Sacramento asked:
January 6, 2016
Would I be able to run this switch backwards? In other words I have 4 inputs ( + and -) and 2 pairs of speakers. I want to be able to switch the speakers across the 4 inputs. Thanks.
1 Answer
Hi Kevyn, Unfortunately you would not be able to use it that way. You may want to look into our AB12 or SVC405. These items you could switch between 2 amps into 1 pair of speakers.
Submitted by: Customer Service - Q&A on January 20, 2016

from welland, ontario asked:
April 13, 2015
If my receiver only has outputs for 2 speakers I can't use the dsm4 to add more speakers to the system?
1 Answer
Hi Piet, Technically you can, but it's not recommended as most receivers can only handle the load of 1 pair of speakers (8 ohm). Running the speaker selector with multiple sets of speakers will increase the load on the receiver and could cause some issues. It would be best to check with the maker of your receiver to see if that's possible or you can run something like our AMP200, which will still allow you to run your receiver to the amp as a source.
Submitted by: Customer Service - Q&A on April 15, 2015

from nyc asked:
July 24, 2014
I have a sony receiver with the standard A-B A+B selections. Off of this I run 2 pairs of outdoor speakers, 1 set on deck, other by pool. I am doing a downstairs remodel and have wired for 3 speakers, 1 per room. If I want to hook these indoor speakers up to this receiver and have the option to play any of the indoor speakers individually or all 3 at the same time, will this product allow me to?
1 Answer
Hi Darren, This is the product to allow that, but you will need a more powerful amp. Receivers can only handle an 8ohm load typically which means they can run a single pair of speakers (2 speakers). Usually our customers use at least the AMP200 for anything more than 2 pairs of speakers.
Submitted by: Customer Service - Q&A on July 24, 2014

from Vancouver, Canada asked:
July 14, 2014
I want to run one pair of speakers with two amplifiers (Pioneer Elite VSX84 for HT and Technics SU-V7X for Turntable/CD). Will this be the right product and does it protect the amps in case both are accidentally turned on. Also do you ship to Canada?
1 Answer
Hello Preet, That should work fine but I would recommend contacting a licensed audio installer to be safe.
Submitted by: Customer Service - Q&A on July 14, 2014

from Orland park, Illinois asked:
July 7, 2014
I have a pioneer VSX-823 with 5 speakers and a sub woofer already connected to it. How can I add 2 more speakers on a different channel to this? For example the five speakers and reciever are in my garage. I would like to ad 2 outdoor speakers to this reciever. I want the 5 speakers in the garage to be off when listening to the 2 outdoor speakers. How can I do this?
1 Answer
Hi Luke, You will most likely need an external amp to power that many speakers, which would also allow you to keep certain speakers on while others are off.
Submitted by: Customer Service - Q&A on July 14, 2014

from Boston Ma. asked:
May 28, 2014
I have an older Pioneer sx1250 and a new Yahmaha HTR-7065 7.1. I would like to wire my 4 speakers to a switch and the switch to the 4 separate channels on each receiver(maintain 7.1 sound on htr) and then allow me to choose which receiver I want to use. Can I use this receiver in reverse. Thanks
1 Answer
Hi John, Unfortunately what you're trying to achieve is not possible with something like this speaker selector. The design of the selector will not allow the outputs to work as inputs and vice versa, plus the impedance matching wouldn't work properly. Call us to discuss. Thanks! BM 2722
Submitted by: Customer Service - Q&A on May 28, 2014

daniel boik
from gaylord, mi asked:
April 15, 2014
I have two analog stereo receivers and two pair of speakers. Will this let me switch back and fourth between receivers using the same pair of speakers?
1 Answer
Hi Daniel, Yes - this unit is designed to allow two amps to run into it and up to 4 pairs of speakers, 1 pair per zone. Each zone can be turned on/off and switch from A to B. This unit is intended for us with well powered amplifiers, so you may want to check with the manufacturer of the receiver if it is safe to run off the receivers. Thanks! -BM 2617
Submitted by: Customer Service - Q&A on April 15, 2014

from san diego ca asked:
January 24, 2014
Are the inputs rca's? Hard to see and its not in the description.
1 Answer
Hey Tony, Thank you for your question. The inputs on the DSM4 are not RCA's, they are a bare wire/screw down input. Let us know if you have any other questions. CS 2459
Submitted by: Customer Service - Q&A on February 7, 2014

from cairo,egypt asked:
August 11, 2013
I had 4 pairs of RX640 rock speakers. Can D SM4 speaker selector be used with RX-5502 stereo receiver to listen to only one pair of speakers (instead of 2 pairs) at a time?
1 Answer
Hi Nooh: Three choices 1) AMP200 (multi Voltage), DSM4 and (4) OVC300 Impedance matching Volume Controls (set Impedance on all four VC's to 4X) 2) AMP200 (multi Voltage), SSVC4 Speaker Selector with built in Impedance matching Volume Controls 3) AMP200 (multi Voltage), and (2) OVC300 with one Volume Control connected to 2 pair of RX-640 each. You would need to set the Impedance matching switch on both controls to 4X and connect two pair to speaker A and two pair to speaker B Those are your three choices. TL-2137
Submitted by: Customer Service - Q&A on August 24, 2013

from California asked:
June 24, 2013
I have a new home with 4 rooms that are wired with in ceiling speakers . Four speakers in the first room and two in the other three rooms. I don't have an amp or receiver. If I buy the, Home Audio Amplifier OSD-AMP200 High Current and the DSM4 Dual Source 4 Zone Speaker Selector with Amplifier Protection. Would these two items take care of my problem?
1 Answer
Hi Chris, For five pairs of speakers, we recommend our DSM6 speaker selector. CL/MA 2016
Submitted by: Customer Service - Q&A on June 28, 2013

from Las Vegas, NV asked:
April 30, 2013
I have a Pioneer VSX-1122-K 165watt receiver. I would like to know how I can add 4 sets of speakers onto the 2nd zone of my receiver. Will a speaker switch work or do I need an amp? I would like to be able to control the volume from the receive since it is connected to my network and I use my Ipad/Iphone as a remote. I don’t intend to have all 4 sets of speakers playing at the same time but as always more options are always better.
1 Answer
Hi Mike, Adding the AMP200 amplifier would be the best way to go. Your zone two is intended for one pair of speakers; therefore, the AMP200 would allow you to play all 4 sets at the same time. If you want each pair to be one zone, you can use a speaker selector like our DSM4. You should be able to control the audio signal level's volume through your Pioneer if it has user interface (it will be connected to the AMP200 with RCA cables). Also, adding in-wall volume controls is great way to control each zone so you do not have to go back to the cabinet. Check out our SVC100 volume controls for your system. CL/MA 1847
Submitted by: Customer Service - Q&A on May 2, 2013

from La ca asked:
April 7, 2013
Is speaker wire held in with screw or is it push type. The instruction manual shows push type but pictures seem to be screw type connection
1 Answer
Hi Corey, We recently upgraded the push type to the screw type. The screw type gives you a more secure connection. The DSM4 has a screw type connection. CL 1779
Submitted by: Customer Service - Q&A on April 9, 2013

from asked:
March 25, 2013
I hate to ask but no information mentions it and I can't tell by the photo. Are those volume controls next to the A/B switching per zone? Thanks, Bill
1 Answer
Hi Bill Those are not volume controls but rather the zone selection (on/off). For volume controls, take a look at our SSVC4 dual source, which has volume control for each zone. CL/MA 1731
Submitted by: Customer Service - Q&A on March 25, 2013

Steve Weston
from Melbourne, FL asked:
June 26, 2012
I have a Yamaha HTR-5760 7-channel AV Receiver. The unit has an A & B speaker selector buttons. I will be running the Surround Sound off the A selector and 4 pair of ceiling speakers (in 4 other rooms) off the B Selector. Each of the 4 rooms has an individual volume control. Is the DSM4 the proper selector box for my intended use?
1 Answer
Hi Steve, I see you have two back-to-back questions. Based upon your setup and after reviewing the Yamaha owner’s manual for your particular AV receiver, the DSM4 would be a good start. It appears you are planning to connect three additional speakers for three zones. I would recommend using two of the MK690TTs for your side surround channels (channels 6 and 7 on your receiver). Connect the Speaker B output from the receiver to Source A of the DSM4 (which features dual source). Then connect channels 6 (right) and 7 (left) to Source B input. This will allow you to play your music through the three zones. In addition, you will have a choice of using the MK690TTs as the surround channels for your home theater (selecting Source B for Zone 4) or listening to the music you have selected for the rest of the house by selecting Source A for Zone 4. (We’ll discuss your speaker selection and placement in the second answer.) Please note that you may have to add an external amplifier to power the DSM4 speaker selector and to power the four zones to maximum levels. An excellent choice would be our AMP200 because it features both Hi Level (speaker level) and Signal level (pre-amp). In the case of your receiver, there are no full-range stereo pre amp outs on this receiver, but you could connect the Speaker B output to the AMP200 line 2 input (high level). A bonus would be a second source input with automatic switching (in this case line 1 input) which could connect to an iPod as an example. That way you would have second source available to play for three of your four zones at the same time as your home theater (pretty cool). You may still have to add a volume control for your fourth zone (the surround speakers) to make sure your system is impedance matched, especially if you do not upgrade to the external amplifier. I would be more than happy to provide a diagram outlining the whole system, but you need to contact me directly at Don't forget, we offer the CL3-rated in-wall approved speaker wire in both two and four conductor. TL
Submitted by: Customer Service - Q&A on June 27, 2012

from puyallup, wa asked:
June 4, 2012
I just built a deck with a roof over it. Its 14' by 35' the roof covers only 14' by 24'. I bought four in ceiling pyle weather proof pwrc81 and I have four pyle pdwr50w 6.5 speakers for the outside of the deck. With the DSM4 can you turn on 2 speakers at a time or 4 at a time or all of them if you wiish.
1 Answer
HI Pete: The DSM4 should work just fine. Are you planning on using outdoor volume controls like our OVC300? The DSM4 has a protection switch internally so you do not need Impedance matching volume controls. However, they do provide additional control where your system is located, plus work a little better for the impedance matching. With the Volume Controls, you would defeat the internal protection of the Speaker Selector; and yes, you can play one, two, or even all four at the same time. You also have independent A/B switches per zone for dual source. You could play background music under the cover while listening to a ballgame with the patio speakers. It’s very flexible. We also have the CL3-rated speaker wire approved for in-wall installation and outdoor applications. Your best bet is to use 4- conductor from the amplifier to the speaker selector and then 4- conductor to the volume controls (if utilized) and then 2- conductor to the speakers themselves whether from the volume controls or directly from the speaker selector. Also, 16 gauge will work unless you are doing runs over 80 feet; then you need to go with 14 gauge. Good Luck! TL/MA
Submitted by: Customer Service - Q&A on June 4, 2012

from Lakewood,Ca asked:
February 18, 2012
w[l thisbox or any of your boxes support a 4 surround sound and a 4 speaker stereo systtem. david
1 Answer
Hi David: The key is the Surround system you either have or are looking to purchase. Many of the Audi/Video Receivers feature a second zone output so you can select a different source to play at the same time as your surround sound is active. You need to determine if the second zone output is a pre amp out (un-amplified) which means you would need an external amplifier (like our AMP200) before connecting to the DSM4 speaker selector. Or in some cases the second zone output comes from channel 6 and 7 of a 7.1 receiver that is only driving a 5.1 system. In this case you connect the DSM4 directly to channel 6 and 7 speaker outputs (amplifed). You would need to program the AVR to output these channels to a second zone. So yes this (DSM4) or any of our boxes will support your application, you just need to determine whether you need to add an external amplifier as well depending on the type of outputs from the AVR. And in case you have not yet purchased the AVR you will need to look for a receiver that features a true 2nd zone output. TL
Submitted by: Customer Service - Q&A on February 20, 2012

from CT asked:
November 29, 2011
1 Answer
Brian, The RMS would be approx. 140 - peak being 280 CL
Submitted by: Customer Service - Q&A on November 29, 2011

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