Problem with Perpetual P1-A.


I bought the whole perpetual package used on audiogon half a year ago, and it came with speaker correction, (I don't know what speakers it was programed for, and that isn't my concern right now). The problem it has always had ONLY when speaker correction is selected is that it causes a ringing through the tweeter with every bass note. the p3a alone does not do this so it is coming from the p1A and, again, only when speaker correction is selected. I don't see my speakers as being a problem becuase I output everything into my headphones and heard the same ringing. I use a coax input to the p1a and have not been able to try a balanced digital cable input because I don't have that type of transport. I use the I2s cable between the p1 and p3 and trying a balanced cable between them did not solve the problem. i think i've had a coax between the two and it didn't go away. the i2s should work anyway.
I can enjoy the perpetual equipment with resolution enhancement on, but the speaker correction does something special which I really like and often listen to it despite the ringing. Still, that ringing is really annoying and I usually end up switching back and forth. The gear does not have any mods as far as I know.
Anybody who knows these units or is expert in digital equipment in general might know what's going on.
Perpetual has a forum on their site, but I thought I'd check here first.
nola_powerman

Showing 1 response by kr4

The speaker correction is SPECIFIC for a particular speaker and it is unlikely that it is for yours. Given that, it is possible that (1) the correction is working correctly in trying to correct the unknown speaker but add that 'ping' incorrectly for your speaker or (2) the correction is faulty. I'll bet that, if you gave your S/N to PT, they could tell you what speakers the correction is tailored for.

Either way, it is incompatible, so why use it?

Kal