The Russound ALT-126R is a stereo in-wall volume control for distributed audio systems where more speakers are connected to an amplifier than it could otherwise drive. Its autoformer steps up the impedance seen by the amplifier, so multiple rooms can be wired to one amplifier channel pair while each room keeps independent level control.
The impedance setting is selected with a switch located behind the faceplate, which keeps adjustments quick during commissioning. Twelve steps (including off) span 48 dB of attenuation, and the frequency response is rated 20 Hz to 20 kHz (+1.0/-0.5 dB at rated power). It handles 42 watts RMS continuous and 126 watts peak per channel and connects through a screw-down terminal that takes cable up to 12 AWG. Both white and light almond Decora plates, inserts and knobs come in the box. The control is UL/CSA certified and carries a lifetime warranty, backed by Russound's Hassle-Free Gold Guarantee: if an ALTx control fails for any reason, Russound ships a free replacement with no return required (proof of purchase may be requested).
Key Features
- Autoformer impedance matching
- Front-accessible impedance switch
- 42 W RMS / 126 W peak per channel
- 12 steps including off, 48 dB range
- Up to 12 AWG screw terminals
Ideal Applications
Whole-home and single-room distributed audio where one amplifier feeds several rooms of in-ceiling or in-wall speakers, such as kitchens, patios, bedrooms and offices.
Compatibility
For conventional low-impedance (4 ohm minimum) speaker systems driven by standard stereo amplifiers or receivers. For 70V commercial lines Russound offers the ALT-70V-50 instead. Mounts in a standard single-gang wall box. Pair with an EZB-8 terminal block to simplify wiring multiple controls.