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    SKU: SVC-100-PAR

    OSD SVC 100In Wall 100W Knob Volume Control, Speaker Impedance Matching (White, Black, Brown) Decora Style

    Purchase OSD In Wall 100W Knob Volume Control, Speaker Impedance Matching White, Black, Brown Decora Style
    • Outdoor Speaker Depot SKU: SVC-100-PAR vmimmavocow
    • $24.99

      Compare at: $36.99
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    Lifetime Tech Support


    Lifetime Tech Support

    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 SVC100 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.

    • 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 d'cor
    • 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 
    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.

    Warning: California's Proposition 65


    This product can expose you to chemicals, including vinyl chloride, which is known to the State of California to cause cancer. For more information, go to

    • Volume Control Type: 100W Impedance Matching Rotary Knob Style
    • Power Handling: 100W Peak; 50W RMS Per Channel
    • Frequency Response: 20Hz - 20kHz
    • Total Attenuation: 52 dB (Max)
    • Steps: 12 (Make Before Break)
    • Impedance Matching for 1/2, 4, 6, or 8 Pairs of Speakers
    • *Can be Used as Non-Impedance Matching if Leaving Default on Jumper Setting at 1X
    • Wiring Requirement: Up to 14 Gauge Wire
    • Removable Input and Output "Quick Connect" Phoenix Connectors
    • Fits in a Standard Single Gang Box - See LV1 for Mounting Bracket
    • Unit Dimensions: (L x H x D) 1.62" x 2.5" x 2.5"
    • What's Included: White, Ivory and Almond Plates, Inserts, Screws, and Knob
    • Additional Colors Available: Black or Brown
    • Warranty: 5 Years
    53 Questions asked
    Have a Questions?

    What's on your mind?

    Ryan • 12/17/2019, 2:17:43 PM Can I add 2 pairs of speakers to 1 volume control?
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Karen Melick • 12/17/2019, 2:17:43 PM 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?
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Steve • 12/17/2019, 2:17:43 PM 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
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Cody • 12/17/2019, 2:17:43 PM 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?
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Darcy • 12/17/2019, 2:17:43 PM 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?
    Customer Service • 12/17/2019, 2:17:43 PM
    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