I bought a set of piezoelectric tweeters, I didn't know they were until I found they didn't give continuity at all...
I have 4 XTC PT1, and two bigger conelike XTC PT100.
The bad thing is that I don't really now which is their actual impedance, I searched some information and found this:
" Piezoelectric speakers have a complex electronic equivalent circuit but mainly they can be seen as a capacitive load with values between 10nF and 1µF. The capacitive value of the speaker is an important characteristic for the amplifier circuit of the speaker. “Piezoelectric means capacitive load” Most amplifier IC’s are developed for electrodynamic speakers. They can deliver high current variations and are limited to a voltage level of +/- 10 Vpp. Piezoceramic speakers demand voltage variations. The current consumption is extreme small and the voltage peak to peak level goes up to 60Vpp. "
I wired two XTC PT1 in series, then paralleled with the XTC PT100 , expecting that the little ones will see half the power of the big one, but i'm not sure if that's right..
I guess I don't have to put any capacitor also because of their nature... Somebody told me to put 4ohm resistors in series to protect the amplifier...
Please any information about this will be well received )
I have 4 XTC PT1, and two bigger conelike XTC PT100.
The bad thing is that I don't really now which is their actual impedance, I searched some information and found this:
" Piezoelectric speakers have a complex electronic equivalent circuit but mainly they can be seen as a capacitive load with values between 10nF and 1µF. The capacitive value of the speaker is an important characteristic for the amplifier circuit of the speaker. “Piezoelectric means capacitive load” Most amplifier IC’s are developed for electrodynamic speakers. They can deliver high current variations and are limited to a voltage level of +/- 10 Vpp. Piezoceramic speakers demand voltage variations. The current consumption is extreme small and the voltage peak to peak level goes up to 60Vpp. "
I wired two XTC PT1 in series, then paralleled with the XTC PT100 , expecting that the little ones will see half the power of the big one, but i'm not sure if that's right..
I guess I don't have to put any capacitor also because of their nature... Somebody told me to put 4ohm resistors in series to protect the amplifier...
Please any information about this will be well received )