In a distributed audio system in a residence, how can volume control in each room be accomplished.
I realize that it's more complex than just putting a potentiometer in the speaker leads.
Is this accomplished via 70v distribution system (ie, high-impedance amplifier output)?
Or is some kind of acceptable variable attenuation possible in each room?
Google turns up L-pads. If I understand, an L-pad keeps 8-ohm impedance on the line from the amplifier, while providing an attenuated signal to the speaker.
As long as it is properly chosen, are there any cautions I should know about installing an L-pad for each pair of speakers in a room?
Are L-pads reliable (no noise, etc.)? Brands to recommend? Or avoid?
Other ideas? Speak your peace.
Thanks,