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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

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    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
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    What's on your mind?

    Simon • 12/17/2019, 2:17:43 PM Is there a mute mode on these? Is it possible to turn the volume to 0? Thanks
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Loren • 12/17/2019, 2:17:43 PM 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
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Kosh • 12/17/2019, 2:17:43 PM 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?)
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Andy • 12/17/2019, 2:17:43 PM 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?
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Mark • 12/17/2019, 2:17:43 PM 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.
    Customer Service • 12/17/2019, 2:17:43 PM
    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