On a DC circuit amp that comes standard with two 1000uF 16V caps on the power side,
what would be the benefits of running a 2200uF 16V cap?
this still seems a small value except for a very small powered amp <10W with 8 ohm speaker attached.
attach more info, some china vendors cheap out on giving value for dollars.
edit > or they expect more caps across the DC rails from an external power supply.
Can you post the schematic, is it regulated? A better power supply can improve the bass significantly, for one thing.
help be find schematics for this Panasonic amp.
Do you have a model number? There's service information somewhere, so people can repair these things.
This is a switching power supply?
OEM auto sound setup? look at used car parts dealers or go aftermarket for upgrades.
I don't see a 84watt sub amp on your images ( needs heatsinking ) those watt ratings are probably overrated like most car amps.
so if you determined a cap replacement will fix them, buy the right case sizes >use the advance search on distributors web site, fix by case size and voltage 1st then pick out larger cap values from the results. not sure anyones ears would notice.
umm OKI have rebuilt approx 75 of these amps. Once I nailed the signature of the different series of caps I was able to mix and match them for amazing sound quality
I was just wondering if a 1200uF discrepancy would make that much of a difference on the side of the transistor.
Many of these capacitors are likely to be chosen for low ESR, rather than their bulk capacitance.
Many of the failures are possibly due to overheating due to increased ESR.
BTW in case you didn't know there is a forum in DIYA for car audio and also some decent websites exist for trouble shooting car amps in a logical manner.
Thank you for the response. I can see how that could be the issue. I guess I put too much faith
in the engineering of the circuit from panny.
Modern TVs have a similar problem, the power supply electrolytics heat up and fail after several years.
Replace them and the TV works again. Better capacitors that wouldn't fail are more expensive than
the crap they use.
Thank you for the response. I can see how that could be the issue. I guess I put too much faith in the engineering of the circuit from panny.