I'm designing crossovers for my rear channels; a 2500 Hz 3rd order butterworth between an 8 ohm ribbon tweeter and two 4 ohm woofers in series (8 ohm load).
While my original plan was to use two DPDT switches for L-Pad attenuation circuits; in one position there would be no attenuation, in another there would be a ~2dB attenuation. However, I found On-Off-On DPDT switches that would enable me to 'remove' the tweeter, woofers, or both from the circuit and this intrigues me.
However, there will be an inductor and a capacitor in series remaining on each channel when in the 'off' configuration.
- When the drivers are removed from the circuit, will the remaining LC/CL circuit be forced to dissipate the power (up to 175W)?
- When both drivers are removed from the circuit, what 'load' would be 'seen' by the amp?
- If only one of the drivers are removed, how will the LC/CL circuit affect the remaining driver?
Here's the circuit: