PCB mounted RCA outputs

dimdom · 08:41 AM

Hi Guys,
I am attempting to make some modest upgrades to my CA 640c V1, CD player.

I contemplating upgrading the RCA outputs. Please see attached image.

Does anyone have any advice or recommendations?

Kind Regards

Dom

Mooly · 10th June 2011, 07:00 PM

Not really is the honest answer. They look OK tbh. Apart from a feel good factor I don't there would be any benefits and unless you had something physically idenetical it would not look good and could in fact be worse if you had to hard wire etc.

For real sonic improvement perhaps investigate such things as the type of opmps used and see if anything there could be a worthwhile improvement.

dogsbark26 · 11th June 2011, 01:45 AM

Do it. Do it.
If you are confident that you can solder new RCAs on a printed circuit board, surely you can solder in new opamps!

dimdom · 11th June 2011, 10:15 AM

Thanks for the replies gents,
I may leave the RCA outputs alone unless I come across some exact upgraded replacements.

I have already removed the opamps and soldered in 8pin sockets whcih will allow me to trial a number of different op amps.

Cheers

Dom

Mooly · 11th June 2011, 10:54 AM

Quote:

Originally Posted by dimdom

I have already removed the opamps and soldered in 8pin sockets whcih will allow me to trial a number of different op amps.

Sounds like a plan...

What opamps are fitted on this as original ? and what do you plan on using ?

dimdom · 11th June 2011, 11:13 AM

Hi Mooley,
teh originals are NE5532's. I have some OPA13XX'S lol I can't remember what I ordered right now. Also heard the LM4562's are pretty good also.

Cheers

Dom

Mooly · 11th June 2011, 11:48 AM

The 5532 is a dual opamp. OPA13 "something" sounds like a single... no good.

I would suggest... particularly with you having sockets... that you try the TLO72. If you like that then try something such as OPA2604. These are both FET opamps.

The 4562 is the successor to the 5532... must admit I haven't tried these.

Also consider the OPA2134.

dimdom · 11th June 2011, 04:08 PM

Hi Mooly,
I am pretty sure it was the an OPA dual version I purchased. I have the info at work, can't quite remember now.

I'll let you know what they were when I get them, lol.

I am thinking about replacement regulators also?

Cheers

Dom

10th June 2011, 07:00 PM	#2
Mooly diyAudio Member Join Date: Sep 2007	Not really is the honest answer. They look OK tbh. Apart from a feel good factor I don't there would be any benefits and unless you had something physically idenetical it would not look good and could in fact be worse if you had to hard wire etc. For real sonic improvement perhaps investigate such things as the type of opmps used and see if anything there could be a worthwhile improvement. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

11th June 2011, 11:48 AM	#7
Mooly diyAudio Member Join Date: Sep 2007	The 5532 is a dual opamp. OPA13 "something" sounds like a single... no good. I would suggest... particularly with you having sockets... that you try the TLO72. If you like that then try something such as OPA2604. These are both FET opamps. The 4562 is the successor to the 5532... must admit I haven't tried these. Also consider the OPA2134. __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

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11th June 2011, 01:45 AM	#3
dogsbark26 diyAudio Member Join Date: Jul 2010 Location: Chicago	Do it. Do it. If you are confident that you can solder new RCAs on a printed circuit board, surely you can solder in new opamps!

11th June 2011, 10:15 AM	#4
dimdom diyAudio Member Join Date: Jun 2011	Thanks for the replies gents, I may leave the RCA outputs alone unless I come across some exact upgraded replacements. I have already removed the opamps and soldered in 8pin sockets whcih will allow me to trial a number of different op amps. Cheers Dom

11th June 2011, 11:13 AM	#6
dimdom diyAudio Member Join Date: Jun 2011	Hi Mooley, teh originals are NE5532's. I have some OPA13XX'S lol I can't remember what I ordered right now. Also heard the LM4562's are pretty good also. Cheers Dom

11th June 2011, 04:08 PM	#8
dimdom diyAudio Member Join Date: Jun 2011	Hi Mooly, I am pretty sure it was the an OPA dual version I purchased. I have the info at work, can't quite remember now. I'll let you know what they were when I get them, lol. I am thinking about replacement regulators also? Cheers Dom

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