kit loudspeaker protection
First of all, I am very suspicious about circuits that use capacitors connected in parallel with RLY coil to stop chattering ..
Also, keep in mind that some amplifiers "don't like" working without load(s) ..
Here:
**broken link removed**
is a loudspeaker protection unit which rather than disconnecting load inserts a resistor in series with loudspeaker ..
And, the sensitivity is adjustable (potentiometer) - not set by a zener diode ..
Regards,
IanP