Trevor Wilson wrote:



**Incorrect. Just parallel an 8 Ohm, 10 Watt resistor with the piezo
'voice coil' and the crossover will operate (more or less) correctly.
Contrary to a lot of common-knowledge, piezos should always be used with
some kind of crossover.


** Having no need for a x-over was a big selling point for piezos - but it's complete bull****

Running them without low frequency attenuation is the MAIN cause of burn outs - due to BASS frequencies exceeding the VOLTAGE limit of the piezo element.

I always added a parallel resistor and series film cap to roll of the input below 5kHz to stop that nonsense.

FYI: for use in cheap foldback boxes with Etone guitar woofers.


..... Phil