Marantz CD63 & CD67 mods list - Page 1701

UV101 · 30th June 2011, 12:14 PM

opa211 is a single op amp - couple be used in pairs on adapters.

opa2211 is the dual version of this opamp.

Some people dont like blind opamp rolling and I'm sure there are technical arguments why you shouldn't however, I've a big fan of opamp rolling, that way you can test using your ears not a meter!! lol

I'd give it a go. It would need to be bloody good to beat the LME49720HA!

RCruz · 12:55 PM

Thank you

I am using LME49720 in my preamp, powered by two +-15v Spowers, but I have been reading about opa2211 and it´s virtues... Maybe I will experiment with opamp rolling a little bit more.

bikeral10 · 30th June 2011, 02:12 PM

Anybody used ard starget caps(elna) gonna use them round the dac decoder and so on, next time the lids off 16v 470uf audiograde anyone have any comments on them?.
alan

Malefoda · 30th June 2011, 02:18 PM

I feel like first time I went here:
what is op-amp?

UV101 · 30th June 2011, 02:19 PM

Use zlh or za on analogue and sepc on digital. I doubt the stargets will be any better than the original (if they are real to start lol) ;-) ask Lee, he has some za's left, I just had 10 myself!! ;-)

bikeral10 · 30th June 2011, 02:24 PM

From rs ian should be real so no better than originals.
thx alan

bikeral10 · 30th June 2011, 02:35 PM

Didnt hear your system as i passed by mon am lol ,said your were going to crank it up it was 3.30am tho? bloody plane 1.5 hrs delay £2.20 per half hour to park .
alan

UV101 · 30th June 2011, 02:41 PM

Quote:

Originally Posted by bikeral10

From rs ian should be real so no better than originals.
thx alan

That's poss a bit harsh!!!!!

They are audio grade caps so they will be ok. Having bent here and got the t shirt with cheaper caps, I'd go za on analogue and def no question about sepc on digital. I suspect the sound will be mushier with the stargets!

bikeral10 · 30th June 2011, 02:44 PM

Quote:

Originally Posted by UV101

That's poss a bit harsh!!!!!

They are audio grade caps so they will be ok. Having bent here and got the t shirt with cheaper caps, I'd go za on analogue and def no question about sepc on digital. I suspect the sound will be mushier with the stargets!

Lol,ok give lee a pm see what he has thx.
alan

Ben Hanke · 1st July 2011, 02:16 AM

Hmm - I think I made a big mistake. I removed my DC coupling caps and thought I had tested for offset properly, but did it while the player was paused, not playing. I wasn't happy with the sound after removing them, but kept them out on the understanding that the sound would improve as I did more work on it. Anyway, long story short, I have ~60mV offset in the left channel, ~-20mV in the right, a broken amp and hopefully... hopefully... not burnt out speakers.

30th June 2011, 12:14 PM	#17001
UV101 diyAudio Member Join Date: Dec 2008 Location: Oxford	opa211 is a single op amp - couple be used in pairs on adapters. opa2211 is the dual version of this opamp. Some people dont like blind opamp rolling and I'm sure there are technical arguments why you shouldn't however, I've a big fan of opamp rolling, that way you can test using your ears not a meter!! lol I'd give it a go. It would need to be bloody good to beat the LME49720HA! __________________ When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk Restek Fantasy, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"

30th June 2011, 12:45 PM	#17002
RCruz diyAudio Member Join Date: Sep 2006 Location: Saxon Blog Entries: 1	Thank you I am using LME49720 in my preamp, powered by two +-15v Spowers, but I have been reading about opa2211 and it´s virtues... Maybe I will experiment with opamp rolling a little bit more. __________________ RC Last edited by RCruz; 30th June 2011 at 12:55 PM.

30th June 2011, 02:12 PM	#17003
bikeral10 diyAudio Member Join Date: Oct 2010 Location: walsall west mids uk	Anybody used ard starget caps(elna) gonna use them round the dac decoder and so on, next time the lids off 16v 470uf audiograde anyone have any comments on them?. alan __________________ Aint broke it yet but im tryin. ( favs Fast women and even faster bikes)

30th June 2011, 02:18 PM	#17004
Malefoda diyAudio Member Join Date: Jun 2006	I feel like first time I went here: what is op-amp? __________________ Old simple TT, cheap CDP with wise mods, Class T amp at its best: music!

30th June 2011, 02:19 PM	#17005
UV101 diyAudio Member Join Date: Dec 2008 Location: Oxford	Use zlh or za on analogue and sepc on digital. I doubt the stargets will be any better than the original (if they are real to start lol) ;-) ask Lee, he has some za's left, I just had 10 myself!! ;-) __________________ When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk Restek Fantasy, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"


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30th June 2011, 02:24 PM	#17006
bikeral10 diyAudio Member Join Date: Oct 2010 Location: walsall west mids uk	From rs ian should be real so no better than originals. thx alan __________________ Aint broke it yet but im tryin. ( favs Fast women and even faster bikes)

30th June 2011, 02:35 PM	#17007
bikeral10 diyAudio Member Join Date: Oct 2010 Location: walsall west mids uk	Didnt hear your system as i passed by mon am lol ,said your were going to crank it up it was 3.30am tho? bloody plane 1.5 hrs delay £2.20 per half hour to park . alan __________________ Aint broke it yet but im tryin. ( favs Fast women and even faster bikes)

1st July 2011, 02:16 AM	#17010
Ben Hanke diyAudio Member Join Date: Dec 2007 Location: Vancouver, BC	Hmm - I think I made a big mistake. I removed my DC coupling caps and thought I had tested for offset properly, but did it while the player was paused, not playing. I wasn't happy with the sound after removing them, but kept them out on the understanding that the sound would improve as I did more work on it. Anyway, long story short, I have ~60mV offset in the left channel, ~-20mV in the right, a broken amp and hopefully... hopefully... not burnt out speakers.

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