Might sound worderful when finished.
Might? :tears:
Cheers,
James
Might sound worderful when finished.
Oh, it's finished!
Lol, sorry! No doubt your unit will sound wonderful! :thmbsp:LOL, no, it's not finished. I'll have to sit for 2 weeks waiting for caps. It just made me want to cry to think that it only "might" sound great.
James
I just got through with the recap of a Pioneer SX-8 and had the same findings with regards to the caps.
Out of about 40 caps I replaced, 6 were lower than spec (but still within 20%) and only a single one was significantly down (2200uF was 1300uf tested). In my case I had to replace a few regulators as well but wasn't about to leave old caps in there once I got through the labyrinth of boards and wires to access the regs.
It really goes to show why all of the caps should be replaced if you want reliable long term operation out of older gear. Sure most are probably good but an increasing number are not and you have no idea where the out of spec ones are hiding and what mischief they are causing.
We spend a lot of time and effort (not to mention $) on these units but it's well worth it IMO.
Is the ESR rating on the FG caps equal or lower than the factory original ESR rating on the factory supplied caps?
That is odd. I just made a 5 page order of Nichicon caps from Digikey last week and had no backordered parts at all. Maybe Mouser is having a supply issue with Nichicon right now?
It's ok, James. For the input cap it can be quite flexible. Actually this is an opportunity to make some experiments and research: you can use another value from 1uF up to 10uF (for both channels) and see how it sounds, comparing this silver 700 with the black 700.
In some amps I modified the stock input capacitance because I found the overall sound a bit crispy, harsh, etc. Any cap in that range (1uF-10uF) can be use for experiment purposes.
Oh man, sorry about that! I thought it was the 4.7uF ones...
Hi Mark, you are way ahead of me, I've yet to even make a dummy load (although I have at least found a nice large piece of heat sink to start with). But I will be interested in hearing what you find out.
Cheers,
James
Bubo,
If you put three 8ohm resistors in parallel, the your amp is only going to see a 2.67 ohm load, not the 8 ohms you want. You could get three 24ohm (100 watt) resistors in parallel, then your amp would see an 8 ohm load. :thmbsp:
Resistance in parallel: Rtotal = 1/(1/R1 + 1/R2 + 1/R3)