Mod - Upgrading opamps in a yamaha av receiver

[spirovious]

The 5532 is a really good opamp.

You would be wasting time and money if you did not do something about the capacitors first.

Ok Sir,point noted .

 

[Welcome]

You're wasting time and money doing stuff with the capacitors, as well.

 

[spirovious]

You're wasting time and money doing stuff with the capacitors, as well.

Well many has positively suggested to change caps,why wont it help?

 

[djk]

"You're wasting time and money doing stuff with the capacitors, as well. "

The polite words for somone that cannot hear a the difference beween an electrolytic and a film cap in the signal path are "hearing impared"

 

[stocktrader200]

i looked njm2068 up and got the datasheet. they spec within a hair of opa2164 and lm4562. .001 thd at a gain of 10
Im using opa2164 and they sound great. the only new one that sounds better then LF353

 

[spirovious]

When I assembled Subbu DAC V3,I certainly found the difference in sound quality even by changing one Tantalum cap to ceramic one(C17).Also there was certainly difference in sound when I changed Panasonic caps to Nichicon (at C22 position).

 

[spirovious]

If these are surface-mount, you may not be able to do anything (for mechanical reasons).

I found other side of PCB and all caps are not SMD So can change the caps to better one.

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post DAC section-

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[spirovious]

I get ELNA, Nichicon and Panasonic caps locally.I know there are many discussions already.Still for AVR and considering my issue, which caps can be better?
Answer in short is OK.

 

[spirovious]

Today l could investigate Yamaha 667 and found some details.
DAC section uses some nichicon VR(M) 10uf, some SMG(regular and KZ) and one fine gold series near DAC chip.Is that SMG from United chemi con capacitor?

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Closer look-

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I cant see ceramic caps.

Power caps are only 6800uf-

An externally hosted image should be here but it was not working when we last tested it.

Now will changing to better nichicon (from VRM to other series) can improve it much?
please share your views.
Thanks.

 

[rtarkund]

I have a Yamaha HTR 3067 with BA4560 Opamps. I am planning to change them to LM4560, three of them. The coupling capacitors of 10uF to 4.7uF polyster ones and decoupling ones from 100uF electrolytics to 22 or 47V tantalums.

 

[rtarkund]

I have a Yamaha HTR 3067 with BA4560 Opamps. I am planning to change them to LM4560, three of them. The coupling capacitors of 10uF to 4.7uF polyster ones and decoupling ones from 100uF electrolytics to 22 or 47V tantalums.

Replacing with LM4562