SKU: SVC-300-PAR
OSD SVC 300In Wall 300W Knob Volume Control, Speaker Impedance Matching (White, Black, Brown) Decora Style
OSD Audio's SVC300 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 SVC300 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 SVC300 is rated at 300 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 SVC300 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.
Features:
- Decora style impedance-matching volume control for whole house audio systems and dedicated audio zones
- Rated at 150 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 SVC300 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
Warning:
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 www.P65Warnings.ca.gov.
- Volume Control Type: 300W Impedance Matching Rotary Knob Style
- Power Handling: 300W Peak; 150W 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
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36 Questions asked
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Thomas • 12/17/2019, 2:17:43 PM
Hi, i have 3 volume controllers SVC300 connect to 3 pair of 8ohm speakers(1 pair to each VC). I connect these 3 VC to front channels of Denon avr 1913 and when we turn up the volume, the receiver breaking out and turn off by itself. Do you know why and what is the right setting,thanks?
Customer Service • 12/17/2019, 2:17:43 PM
Hi Thomas:
You should have each Volume Control set to 4X assuming you are wiring the three pair of speakers (each with a SVC300) parallel to the Left and Right front channel speakers. And you have the receiver on 2 channel stereo mode.
Note most of the AVR receivers want to see 8 ohm loads or they have a relay that will make it go into protect mode.
TL/4696
Jason • 12/17/2019, 2:17:43 PM
Looking for a bluetooth amplifier to go with this volume control? No stereo needed. Just to send music to my ceiling speakers from my iphone etc.
Customer Service • 12/17/2019, 2:17:43 PM
Hi Jason:
You have a couple of choices. Number one checkout the XWB to in wall Bluetooth Amplifier with dual source option and Volume Control. This will fit in the junction box you were going to mount the SVC300 volume control but gives you a 25 watt digital stereo amplifier. You would connect your two speakers to the amplifier in the junction box. You have a second plate in the kit that is mounted near the floor. This features a power plug to connect the wall wart power supply that plugs into the nearest outlet. The plate also features a 3.5mm Aux input. Both the Power and aux input have connecting wires to the Bluetooth amplifier typically mounted 3 or 4 feet above the lower plate. It has the Bluetooth amp/receiver built in and controlled with the Volume control knob. The other option is our new NERO Digital Integrated receiver with internal Bluetooth Receiver and stereo RCA input, 3.5 aux input and Digital Fiber Optic input (to connect directly to TV or CD/DVD player. Plus it has the Bluetooth Receiver as well. This also has a Volume Control on the front panel (so you can skip the SVC300 with this option as well). This also features a Subwoofer output with variable level controlled by the front volume knob as well. This features a true 16 to 24 bit DAC. A true Audiophile unit.
TL/4966
Jim • 12/17/2019, 2:17:43 PM
Hi, i have 4 zones with 2 speakers per zone. Im using the amp 300 bridged. I have the bridged outputs connected to a speaker selector. The speaker selector impedance mathing is turned off. What should i have the impedance switch on the volume control set to? I have 4 zones.
Customer Service • 12/17/2019, 2:17:43 PM
HI Jim:
The AMP300 has Speaker A; left and right (+/-) and Speaker B; Left and right (+/-). To Bridge the Amplifier, you connect the two positive's outputs from Speaker A. The Bridged mode is not the best application for multiple speaker setup. When in the Bridged mode it is critical that the AMP 300 sees a minimum 8-ohm load. What speaker selector are you using (brand/model number); I am assuming its one of our ISS or DSM passive speaker selectors rated at 140 watts per channel without Protection (and 70 watts with protection turned on). You already mentioned you are allowing the SVC300 handle the heavy lifting (Impedance protection). The safe setting for a standard amplifier would be 4X. The 4X stands for the number of 8-ohm pairs of speakers connected to the amp after all wires are connected (and all zones are turned on). But the AMP300 is a High Current Amplifier that is rated to 2 ohms and meant to operate at 4 ohms putting out over 200 watts versus the 135 watts for the 8-ohm setting. Another way to improve your amp 300 is by adding our Pre-One Preamplifier. Not only does it provide four selectable inputs, Control knobs for Bass, Mid, Treble, and Loudness. But the unique feature is the 1.5V output which triple's the input signal into the AMP300 allowing you to turn the master level controls down to 60%; tim@osdaudio.com
TL/5214
Nick • 12/17/2019, 2:17:43 PM
I am purchasing 1 pair of AP640 and 1 pair of AP650. I will be powering speakers with XMP100. I want volume control for the AP640's and not for the AP650's.
I was thinking of running 14 gauge 4 conductor wire to a SVC300 impedance volume control. Then I would run 14 gauge 2 conductor wires to each individual AP640 speakers from the volume control.
I would homerun the AP650's straight into the back of the XMP100 amp.
Would this be correct?
Also, what impedance would I set the SVC300 on for the AP640's?
Customer Service • 12/17/2019, 2:17:43 PM
Hi Nick:
The AP650 and AP640 are not in the same series. Consider two pairs of AP650 or a pair of AP650 and a pair of AP525. Both feature a unique 2-way mounting bracket as well. 14 gauge is good, but you will find the OVC300 best for your application (outdoors). I also suggest more power either the AMP200 or XMP300 which leaves you room to expand the system possibly adding additional speakers and even a subwoofer.
Would still like to see pictures of your structure.
tim@osdaudio.com
TL/5238
Wayne Powell • 12/17/2019, 2:17:43 PM
So physically where on the control is the impedance switch located ? I am using your SVC-300 and OVC-300 rotary switches. Thanks for the help.
Customer Service • 12/17/2019, 2:17:43 PM
Hi Wayne:
I will send you under separate email, images showing where the switch is for all the OSD Impedance Matching Volume Controls.
TL/5466