# Is it possible to design this circuit with a single potentiometer (L-pad)?

I'm designing an L-Pad for my speakers. They attenuate the signal while keeping a consistent effective impedance, which is necessary for the amplifier and crossover circuits.

Typically, these values are computed and hard soldered, giving one 'set' attenuation level.

I want to use a single potentiometer (though it could be a dual-wiper pot) to make this adjustable, and include 0 dB (completely out of the circuit).

Would this be possible to design, without the use of a microcontroller and programmable potentiometers?

It needs to maintain a constant impedance, and I'm using them on 8 Ohm speakers.

Solving for my application:

R2 = Variable from (infinity) Ohms / disconnected

R1 = 8 - (R2 * 8) / (R2 + 8)

Help!