The VCRI is an rotary knob automatic impedance matching volume control. That means multiple volume controls and speaker pair can be connected to a single, appropriately powered amplifier. It also means there are no impedance tables, jumpers or switch settings to mess with.
Let's say you want a simple, multiroom audio system where all speakers are playing the same thing and each room has a separate volume control. Up to six VCRIs, with one pair of 8 Ohm speakers per volume control, can be connected to a 4 Ohm capable amp as shown in the illustration.
For a slightly different application, up to 4 pair of 8 Ohm speakers can be connected in parallel to a single VCRI connected to a 2 Ohm capable amp. This allows you to have a multispeaker application in a large room or in several adjacent areas that are all controlled with a single controller with no jumpers or switches to configure on the volume controls.
Simple, reliable, flexible. Turn up the fun with the VCRI Automatic Impedance Matching Volume Control by Beale Street Audio.
