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Old 14th January 2004, 11:13 AM   #1
ratu is offline ratu  Spain
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Default Onkyo tx-ds 676 upgrade

Hi
Im triying to update my onkyo 676, changing the opams, it uses the NJM 4565(14 ICs!! dual opam from NJR) and 15534(3 ICs connecteds after the 5.1 DACs).

For the NJM i think that it would be better to change by the OPA 2134, that it semms better and cheap comparing to an others Opams. WHAT DO YOU THINK ABOUT IT?

For the 15532 i read in www that it seems to be the 5532 and im not shure what to do, because this forum likes it. WHAT DO YOU THINK ABOUT IT?

I have connected the onkyo to a McIntosh MC 2505 for the mains channels, so the supply upgrade is not very important.

Tanx

RATU
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Old 15th January 2004, 10:06 AM   #2
Nuuk is offline Nuuk  United Kingdom
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Ratu, unless you have an emotional attachment to your Onkyo I would think it is a lot easier (and more practical) to convert it to use just two LM3875's!

Just a thought!
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Old 15th January 2004, 10:59 AM   #3
ratu is offline ratu  Spain
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You dont understand me, I use the Onkyo for the 5.1 Decoder and mainly as a pre amplifier, for the power i have the McIntosh

RATU
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Old 15th January 2004, 01:49 PM   #4
Nuuk is offline Nuuk  United Kingdom
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Ah, sorry, I misunderstood what the Onkyo was.

Well, as ever with a request for 'which is best replacement part', you will get people's opinions.

There is another thread here about replacing the opamp on preamps and you will find all the 'usual suspects' there!
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Old 15th January 2004, 01:56 PM   #5
ratu is offline ratu  Spain
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Default 14 X 10..20$= too much money

Thanks

On the forum people talks about opa627, 845,8610, but i've 14 ICs!(14 X 10..20$= too much money) thats why i want to know the forum opinion.

Yours..
Ratu
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Old 15th January 2004, 01:59 PM   #6
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Default Re: Onkyo tx-ds 676 upgrade

Quote:
Originally posted by Nuuk

There is another thread here about replacing the opamp on preamps and you will find all the 'usual suspects' there!


Quote:
Originally posted by ratu

For the NJM i think that it would be better to change by the OPA 2134, that it semms better and cheap comparing to an others Opams. WHAT DO YOU THINK ABOUT IT?
That's a good one.

Quote:
Originally posted by ratu

For the 15532 i read in www that it seems to be the 5532 and im not shure what to do, because this forum likes it. WHAT DO YOU THINK ABOUT IT?
I don't like it.
Just to be sure, measure between pins 4 and 8.
If you have around 30 volts there, it's a double op-amp, and you can use the OPA2134 here too.
If that voltage is between pins 4 and 7, it's a single (I don't think so) and you can use the OPA627 .
If you want cheap, OPA134 or OPA604.
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Old 15th January 2004, 04:29 PM   #7
ratu is offline ratu  Spain
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Thanks carlos ill begin on the Mains pre amp output, and after that ....THE REST.

RATU
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