I have been looking for amps for my system and finally found a couple, they arrived today. they are Adcom 555II's. They arrived well packaged and the condition is way above usual. I am going to do some mods on these. First thing I did was fire them up and check the MV across the speaker terminals. They are fine and were dead quiet when I fired them up. I am going to do all stages and the first is the PS. I will post as things progress.
So far so good. I had to look hard to find 4 caps in the PS but I finally found them under the plate that holds the bridge rectifier and bleeders on. It's the only place they could be after looking at it. They were 100nf at 100v and I replaced them with 100nf at 250V I'm waiting for some X2 caps for the AC line and the new bleeders and that part will be pretty much done. I'm going to change the bridge from 25amp at 400v to 50 amp at 600v, Bleeders from 3.9Kohm at 3 watt to 4.7Kohm at 7 watt overkill but they were available. I'm going to filter the AC side of the bridge with a 10nf at 400v X2 cap. Not present now.
What's (as in function) 100nF (.1uF)?
Yes
What is their function?Originally Posted by quindecima
I am asking as I thought I understood you to mean re-capping/rebuilding when you wrote "I am going to do all stages and the first is the PS"
What are the values of the big cans?
Nice amps, you get them for a good price?
I have plenty of .01uF X1/Y2 caps if you need a few (rather than pay shipping on an order so small)
Thomas
They are bypassing caps.
The big cans are 100v at 15000uf
I would be better off with the X2 caps their voltage rating is less than 2500v while the X1 is 2500v and below 4000v but.........are they long lead? Whats the voltage?
I got them for a good price, condition is everything on these. about 100 to 150 less than they go for on Epay.
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