\rHi Gary:
The single Volume Control will not work for you application. A better choice for you is the SSVC2 dual zone speaker selector which features two Impedance Matching Volume Controls and dual source. These volume control both the OVC-100 and also the ones found in the SSVC2 are passive devices that do not add gain, they actually attenuate the signal, turning it down. So when you turn the sound up for the Bow and cabin speakers you would turn the sound down in the cabin with volume control assigned to that zone (either zone 1 or zone 2). You also have an on/off switch per zone on the speaker selector for added flexibility. (the internal volume controls are also rated at 300 watts peak)
I hope that helps
TL/3850\r