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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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    Lifetime Tech Support


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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
    Have a Questions?

    What's on your mind?

    T J Franken • 12/17/2019, 2:17:43 PM 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.
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Dawn Hocutt • 12/17/2019, 2:17:43 PM What type of box will I mount this into in new home construction?
    Customer Service • 12/17/2019, 2:17:43 PM
    Hi Dawn: A standard J box either Metal or Plastic will work. TL/5076
    Robert • 12/17/2019, 2:17:43 PM 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?
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Joel • 12/17/2019, 2:17:43 PM Can this be used with a single 8ohm speaker? what jumper setting?
    Customer Service • 12/17/2019, 2:17:43 PM
    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
    Tad • 12/17/2019, 2:17:43 PM 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?
    Customer Service • 12/17/2019, 2:17:43 PM
    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 [email protected]. Please let me know. TL/5278