I have changed op-amps a LOT in this.....probably 50-60 times already with all the different ones and just swapping to test sound. So are you saying you literally just use another socket as an adapter?
Do you have a part number for it or are they all basically the same?
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As I said to Claude, this Shui Yuan should lend itself very well to DIY modifications, this is what I started to do by modifying some caps and rolling some new OP amps... The stock version is great however (full Nichicon caps).
Claude, I’ve used browndog adapters for awhile now. They work fine in dip8 sockets that haven’t had a larger diameter pin inserted into them. I’ve also found that cheaper made sockets stretch out really easily compared to higher grade one that can be bought at Mouser or Digikey. Just the use of sockets (one that would normally be soldered into the boards) as intermediate mounts will help the situation .
Cheers,
Pete
This?
NEW Class D power amplifier TPA3255 2.0 Digital Power Amplifier Board 300W + 300W Original TPA3255 LM2575S 12|Amplifier| - AliExpress
And if so, whats the possibility it fits in the A04 case? I have no idea what the dimensions of this board are.
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I have to go back and get some ordering numbers for you. I use inexpensive ones (I think I got a pack of 10 or 20 from Amazon) as well as gold plated ones from Mouser (which I save for my final builds).
The picture I posted shows browndog, then socket, then browndog in the socket.
https://www.amazon.com/dp/B07H3V9DSF/ref=cm_sw_em_r_mt_dp_QHTTZX35JY7ZCYVAZMCT
Pete
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So are you just putting that socket inside the existing one as an adapter or are you swapping the sockets on the board out?
Guy from Cimmaron suggested these, which Ill probably just order.
Mill Max 110-43-308-41-001000
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So you can compare :
OPA1656 from Bushellj vs Jlester : (Genuipe OP amps from Mouser) but with different sockets, I also have some gold pin version.
serveur png
OPA1656 from Bushellj vs Jlester : (Genuipe OP amps from Mouser) but with different sockets, I also have some gold pin version.
serveur png
Both. I’ll only swap out the socket on the PCB when I decide on which opamp to finally use. While testing/rolling I put the new socket into,the old one and the browndog into the new socket.
Pete
Lester’s SOIC8 adapter (that he ships with his TPA3255 amps) uses really big pins. Anywhere I’ve used his SOIC8 adapter the socket has been stretched out and I’ve had to use other sockets as intermediary mounts so the browndog adapters fit in tightly.
Pete
Ok, so in theory I can just buy new sockets and use them as quasi-adapters instead of having to replace them on the board? This PCB is rapidly reaching the end of how many more times it can be heated up. One of these times it will just fail. Im going to get a new board or new amp at some point I imagine. This was more a playground than a final product.
Daniboun, you really need to update the OPA PS bypass caps on your 04 amp ;-)
At least these if you don't want the others under the board...at last, that is something everybody tends to agree on... makes quite a difference. Wonder how a fully tweaked 04 would perform vs your latest acquisition
One thing I find lacking on most Class D amps is the depth of the soundstage. How does that latest boy perform in that regard? I understand the sounds are more frontaly projected, but what about depth / behind the speakers? I understand that might not be easy to evaluate currently with one speaker being in a corner, but I just ask in case you know already...
Mille grazie
Claude
At least these if you don't want the others under the board...at last, that is something everybody tends to agree on... makes quite a difference. Wonder how a fully tweaked 04 would perform vs your latest acquisition
One thing I find lacking on most Class D amps is the depth of the soundstage. How does that latest boy perform in that regard? I understand the sounds are more frontaly projected, but what about depth / behind the speakers? I understand that might not be easy to evaluate currently with one speaker being in a corner, but I just ask in case you know already...
Mille grazie
Claude
Yes, that theory is correct. That’s what I do now.
You can just buy the cheaper grade if that’s all you’re going to do for now.
Pete
Cool, thanks. Their all of $.80/ea on Digikey and I already have a cart with other stuff. If I get motivated enough to permanently attach them then I wont have to buy again. Plus, as a bonus, having a little extra space between the boards might make for attaching caps easier vs on top of the Brown Dogs.
Quote: Ok, so in theory I can just buy new sockets and use them as quasi-adapters instead of having to replace them on the board? This PCB is rapidly reaching the end of how many more times it can be heated up.
Well, it will fail eventualy but heatcycles won't kill it yet. If you haven't yet touched the tracks around the OPA socket, then it will be a first and it is OK... it is not riskier than desoldering all the small caps you wanted to.
Repetitive actions on the same spot will though kill the trace sooner or later, depending how skilled and lucky you are.
Adapters on adapters, that's really not great re contact R, parasitic L and C, and hence for the sound. Probably better than nothing, but barely...
I had some loose OPA in the past, but that was intentional. Whatever, I have quite anidea of how it translated. So, in your case, is it loose in such a way it would pop out immedately if reversing the amp upside down? How does it sound despite being loose? Do you have anenormous parasitic noises (beep or whatever), or loss of volume, or enormous loss of bass or treble? If one of these, then indeed stear clear quickly! If none of these, worth a listen IMHO, to dig deeper and hear if really a majour prob...
Not everything is lost, hold on, you did well so far 🙂
Claude
Well, it will fail eventualy but heatcycles won't kill it yet. If you haven't yet touched the tracks around the OPA socket, then it will be a first and it is OK... it is not riskier than desoldering all the small caps you wanted to.
Repetitive actions on the same spot will though kill the trace sooner or later, depending how skilled and lucky you are.
Adapters on adapters, that's really not great re contact R, parasitic L and C, and hence for the sound. Probably better than nothing, but barely...
I had some loose OPA in the past, but that was intentional. Whatever, I have quite anidea of how it translated. So, in your case, is it loose in such a way it would pop out immedately if reversing the amp upside down? How does it sound despite being loose? Do you have anenormous parasitic noises (beep or whatever), or loss of volume, or enormous loss of bass or treble? If one of these, then indeed stear clear quickly! If none of these, worth a listen IMHO, to dig deeper and hear if really a majour prob...
Not everything is lost, hold on, you did well so far 🙂
Claude
It’s not really hard to solder onto the top of the browndog..😉
Not a great pic but you get the idea.
Pete
Attachments
Socket into socket... well, if you really manage to bound and force permanently your Brown Dogs into a socket, then I guess it could be acceptable... I have this on one of my test rigs, not the best thing I did but no choice as to allow various combos. So "Brown Dog with its pins bounded to a socket" assembly would go into the existing socket on the amp. Note it won't like it and you won't be able to remove and refit these easily or often a socket into socket is forcing things usualy, but well...
So Turion 64 solution could be it!
So Turion 64 solution could be it!
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Touched the tracks? I swapped all 9 of the caps and have soldered ( a few different times) caps on the legs of the socket so I assume that counts as "touching".....lol
And yes, these 1656's are so loose you can basically "rattle" them around in the socket. Zero force needed to put them in, they just fall to the bottom of the socket. For sure they would fall out if I turned it over. There are all sorts of weird audio artifacts using them as is. Not even sure how to explain it, like RF noise maybe?
The browndogs are just inserted into the intermediate sockets. No soldering is involved unless I interpreted your sentence incorrectly.
Cheers,
Pete