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Pic guide to RME HDSP 9632 mod cap

post #1 of 20
8/15/09 at 11:51am
Thread Starter 
Hi!

I've finished modded RME once more time, the result very antonishing.

sry I don't have camera here so can't take the real image of my card. So I used internet photo .........



I want to change opamp stock JRC4580 to LME49860 too but can't buy in my country! I find op275 make the vocal more sweet but don't like this opamp.

Note: Careful with the two cap below oscon and the clock oscilator, you may go wrong with the new cap. Notice that the cycle pin are yin and the square pin are yang.
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post #2 of 20
8/15/09 at 11:59am
The JRC4580 are just generic audio opamps and you would get some great gains changing the opamp to a better spec'd model.

Many manufactures will use cheaper generic caps also, so it is usually a good bet to change those out also.

Good luck with your mods.

BTW, check with the company they may send the opamps right to you if you pay shipping.
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post #3 of 20
8/15/09 at 12:11pm
Thread Starter 
Quote:
Originally Posted by ROBSCIX View Post
The JRC4580 are just generic audio opamps and you would get some great gains changing the opamp to a better spec'd model.

Many manufactures will use cheaper generic caps also, so it is usually a good bet to change those out also.

Good luck with your mods.

BTW, check with the company they may send the opamps right to you if you pay shipping.
Thank you! I am going to ask my friend for help. The result equal to a zhaolu modded zapfilter ,the soundstage can compare to zhaolu/zap but but better in almost other field.
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post #4 of 20
8/15/09 at 12:22pm
Sure thing. Let us know how it goes for you.
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post #5 of 20
8/15/09 at 12:36pm
hah! I thought the 9632 had JRC2068? damn, 4580

the LME49720/860 serie has whining trebles and anemic bass when not in TO99 form...I don't think I'd advise using these tbh, especially in a permanent soldered form.

there's zillions of chips out there, but you might be more lucky w/ OPA211, LME49722, LT1358 or LT1057.

LT and TI send free samples too

you could also put a 1ppm clock
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post #6 of 20
8/15/09 at 1:40pm
Thread Starter 
Quote:
Originally Posted by leeperry View Post
hah! I thought the 9632 had JRC2068? damn, 4580

the LME49720/860 serie has whining trebles and anemic bass when not in TO99 form...I don't think I'd advise using these tbh, especially in a permanent soldered form.

there's zillions of chips out there, but you might be more lucky w/ OPA211, LME49722, LT1358 or LT1057.

LT and TI send free samples too

you could also put a 1ppm clock
yeah Leeperry, I am finding 1ppm clock too I may try LME49722, thank you
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post #7 of 20
8/15/09 at 2:00pm
Are you following the above picture for suggestions for capacitors?
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post #8 of 20
8/15/09 at 2:40pm
Thread Starter 
Quote:
Originally Posted by ROBSCIX View Post
Are you following the above picture for suggestions for capacitors?
The above picture created by myself After some modded and I found follow that have the best result. Somes even say rubycon ZL/ZA better than Black gate
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post #9 of 20
8/15/09 at 2:54pm
interesting mod on the 9632. I have so far made very high end cryo silver digital breakout (BNC and XLR AES) on the 9 pin (to feed my incoming Buffalo32) and a cryoparts UP-OCC copper balanced analogue breakout for the 15 pin. next up is the cap upgrade you have done; was planning on using a mixtire of blackgate N/NX hiQ type and elna silmic. opamps I was thinking I might try and squeeze a Dip socket on there. but the main thing I would like to find some info on is where to tap the i2s line; have you found any info on that so far?? where did you find your resources for this mod??
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post #10 of 20
8/15/09 at 4:08pm
Quote:
Originally Posted by haclongba View Post
The above picture created by myself After some modded and I found follow that have the best result. Somes even say rubycon ZL/ZA better than Black gate
I see. People have very different tastes in audio caps. I have always like Black gates myself but...I will try whatever aslong as it helps with getting the best sound quality.
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post #11 of 20
8/15/09 at 4:13pm
Quote:
Originally Posted by qusp View Post
interesting mod on the 9632. I have so far made very high end cryo silver digital breakout (BNC and XLR AES) on the 9 pin (to feed my incoming Buffalo32) and a cryoparts UP-OCC copper balanced analogue breakout for the 15 pin. next up is the cap upgrade you have done; was planning on using a mixtire of blackgate N/NX hiQ type and elna silmic. opamps I was thinking I might try and squeeze a Dip socket on there. but the main thing I would like to find some info on is where to tap the i2s line; have you found any info on that so far?? where did you find your resources for this mod??
There are some SOIC to DIP adapters at Cimmaron technology. They solder to a SOIC foot print but allow you to use DIP8. Bit of a small circuit board.
Here is a pic:



I have never tried these but I gues2 you could solder down the SOIC leads and add a DIP8 socket to the upper board then just snap in whatever opamps you wanted. Figured this may help instead of trying to squeeze a dip 8 socket into a SOIC footprint -very tight fit.

Hope this helps.
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post #12 of 20
8/16/09 at 10:58am
nice, yeah i've seen those in browsing before, but never had cause to use them before now. perfect for this application though. thanks for that already got all the sockets and opamps i could need. wonder if AD8620 will work in there. guess i'll have to check out the spec of the stock opamp. though I dont know how far I would persue that angle, considering i'll be using my buffalo32 mostly. the cap and clock upgrade will help out though. might do the opamp mod just for completeness sake though
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post #13 of 20
8/16/09 at 1:14pm
There are other options. I have been working with a few guys designing new adapters for opamps and other circuit adapters for modifying DAC's and amplifiers. Adapters designed to be used for modification. There seems to be a very limited supply of useful adapters.
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post #14 of 20
8/17/09 at 2:15pm
Thread Starter 
Qusp do not use AD8620, use the adapter ROBSCIX give us with 2 AD797brz, just 2 ad797 on one adater enough if using headphone because the output channel can select ( I auditioned AD797brz on Linn numerik, very good opamp). There are many opamp better than AD8620, find here:
http://www.head-fi.org/forums/f6/aud...1/index10.html

But the cap modded really make a huge improment. The oscon put the right place make sound more open, sound of the rubycon is lively....
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post #15 of 20
8/18/09 at 2:49am
Quote:
Originally Posted by haclongba View Post
Qusp do not use AD8620, use the adapter ROBSCIX give us with 2 AD797brz, just 2 ad797 on one adater enough if using headphone because the output channel can select ( I auditioned AD797brz on Linn numerik, very good opamp)

sure I like the AD797 too, I havent looked into the power suply available aas for what will remain stable in here.

Quote:
There are many opamp better than AD8620, find here:
http://www.head-fi.org/forums/f6/aud...1/index10.html
sure there are better than 8620, but i'm sorry, but you wouldnt find me using those in there. i'm all for dicrete output, but I do not think that it is such a great idea to just drop in a discrete output in place of an IC, too many consequences (latency) of bringing the device further away than it should be. opamps are not the be all and end all, but if they are one thing, its consistent and predictable (to a degree) now a dac designed from the ground up with a discrete output; now thats interesting.

I think I will experiment with some film caps in there for output. I have plenty of elna sllmic II that I will use as well, but I may also play with film bypass caps. I have some spare duelund copper too but likely will use mundorf SIO
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