The stereo autoformer attenuator volume control for distributed mono systems, distributed mono systems with subwoofer, or distributed stereo applications shall be Lowell model 150LVCS-DSB, with power rating of 150W per channel and 3 dB per step attenuation with two positions of 6 dB before off. The volume control shall have plug-in termination for up to 14-gauge wire for 70V or 100V input connections (from an amplifier), and 70V or 100V output (to a speaker/transformer assembly). It shall include a two-gang decorator-style stainless steel wall plate with black subplate and rotary knob.