I'm using 2 TA10s as power amps with a Musical Fidelity pre-amp. Having used the supplied plug in power supplies, I wanted to try a car battery and did this today. Both TA10s use the same battery, but there's a crackling sound in both speakers when the volume goes up. It seems to coincide particularly with louder lower frequency sounds. But for that, the sound is crystal clear, dynamic and promising.
Can anyone tell me why the crackling is happening? As I say, it happens in both speakers. I've tried changing the power cables from battery to amps to rule out problems there. The pre-amp has it's own seperate power supply. If I didn't know better (and I don't!) i'd think they were shorting.
I'm very keen to experiment with what clean battery power will add to the mix, but i'm worried that if I continue to experiment without getting rid of the crackles I'm going to do some damage.
Suddenly occurs to me, in case it's relevant, I use each amp to power one speaker. I do this by taking that amp's left and right channels to feed the higher and lower frequencies of each speaker. I've done this on the basis that should give a little more more power. Don't know if this introduces earthing issues etc.
Thanks
Chris
Can anyone tell me why the crackling is happening? As I say, it happens in both speakers. I've tried changing the power cables from battery to amps to rule out problems there. The pre-amp has it's own seperate power supply. If I didn't know better (and I don't!) i'd think they were shorting.
I'm very keen to experiment with what clean battery power will add to the mix, but i'm worried that if I continue to experiment without getting rid of the crackles I'm going to do some damage.
Suddenly occurs to me, in case it's relevant, I use each amp to power one speaker. I do this by taking that amp's left and right channels to feed the higher and lower frequencies of each speaker. I've done this on the basis that should give a little more more power. Don't know if this introduces earthing issues etc.
Thanks
Chris