Re: Focusrite Saffire Pro 40 re-cap
I replaced the 5 the main output opamps for LM4562 .
All input opamps inclunding buffers were changed to 4562, too. Changing the input buffers did not make a huge improvement. As Khon said, replacing the 2122's (preamp gains) is just fine.
But also swapped in some NE5532 all remaining NJM4565.
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: Focusrite Saffire Pro 40 re-cap
Conclusion after changing all output opamps:
I've swapped in 5 LM4562 on the monitor main output (1/2)
Outputs 3-10 got NE5532 all over because I rarely use them and these were pretty cheap too.
Before there were NJM4565 on all outputs.
I'm really impressed with the LM4562. Bass and Mids are very rich and detailed.
The NJM4565 lacked some Bass and lots of Mids in comparison although they were very! detailed in the highs I think, somehow a bit too much on the bright side making them fatiguing. But loved...
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Re: Focusrite Saffire Pro 40 re-cap
managed to follow the multilayer pcb traces with a bright flashlight
seems a bit different on the 56. on the main board there are:
5 opamps pushing the 4392 signal for the mains (Out 1/2)
4 opamps for the 4 other stereo outs each (Outs 3/4 5/6 7/8)
this makes a total of 21 output opamps. excluding headamp
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Re: Focusrite Saffire Pro 40 re-cap
I couldn't figure out how many and which opamps work on the monitor out.
What opamp numbers are these on the saffire 40 ? how can I find out on this multi-layer board?!
Looks as if the mains were fed from the 4392 chip
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Re: Focusrite Saffire Pro 40 re-cap
changing the 2122 made the biggest improvement. replacing the 4565 enhanced it furthermore, but wasn't a big step up as the 2122.
I made some speaking samples with a mic to compare it after all.
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Re: Focusrite Saffire Pro 40 re-cap
yes, 2122 on each preamps. after that 3x4565 on the liquids and 2x4565 on the 6 other inputs.
then there are 21 (?!dont understand why and how) 4565 for the 10 outputs.
SIP NJM4556 for headphones. These sound very good to me. is there a good replacement?!
first smd soldering for me. but it worked
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Re: Focusrite Saffire Pro 40 re-cap
Additionally: I hate soldering smd.
how do you desolder these little chips in between all the caps?!?
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Re: Focusrite Saffire Pro 40 re-cap
they do fit. no problem at all. seems the board was designed for both sizes cause the pins soldering surfaces are long.
finished one preamp using the lm4562 compared it to the stock njm2122 preamp.
difference is obvious. the 4562 really shines. slightly more output and MUCH less noise. the 2122 sounds covered and thin. hard to describe but 4562 is worth its dollar
so I'm gonna get a lot of these and change them.
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Re: Focusrite Saffire Pro 40 re-cap
OctpPre is a really nice unit too! Had it but sold it because I didnt need that much inputs anylonger.
Here's my conclusion after changing all caps:
Overall it improved the saffire enormous.
I found changing the input cap didn't make a huge difference. To me the mids got cleaner and more defined on the inputs. But I will measure this in addition later.
Since I did the recap stepwise to compare it directly, I was really impressed how the sound improved after changing the power supply caps on PSU and...Last edited by PhilippHoeger; 01-22-2013, 03:37 PM.
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Re: Focusrite Saffire Pro 40 re-cap
Yes. Only a few caps left to do now .. a day of work.
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Re: Focusrite Saffire Pro 40 re-cap
Just finished my PSU and decoupling update and tested it a acoustically treated studio surrounding.
I expected to find a subtle improvement in sound, but man this is HUGE!
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Re: Focusrite Saffire Pro 40 re-cap
what are you using the ADAT i/o for?
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Re: Focusrite Saffire Pro 40 re-cap
chip is a DSPB56374AF and yes it's a relay.
here's a picture of the preamp board. All in all, a total of 144 capacitors and 48 opamps. ...
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Re: Focusrite Saffire Pro 40 re-cap
interesting.
I even thought you accidentally interchanged Filt+ and Vcom because this is what the Saffire 56 got there:
Filt+ filter caps for the codecs : 47uF 16V
Vcom filter caps for the codecs: tiny blue 10uF 16V...
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Re: Focusrite Saffire Pro 40 re-cap
right, could be a problem. narrow to wide adaption will be a little bit annoying.
are you sure with your original 470uF Vcom filter caps? mine has 47uF/16V in it.
All the others caps are the same in the 56
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Re: Focusrite Saffire Pro 40 re-cap
I'm not in a hurry tuning this box
Yes! I've got 48 opamps in the Saffire 56... and still didn't get all my caps either.
will take some time, but I think I'm gonna check some different opamps on this and let my ears decide since I'm not really into measuring these little beasts.
happy soldering ! :P
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Re: Focusrite Saffire Pro 40 re-cap
so let me know about your opamp replacement results. It's hard to decide what to chose, because there's much differing talk on opamps on the net.
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Re: Focusrite Saffire Pro 40 re-cap
Did you compare these to other opamps like the OPA2134 ? They're being used for many mods.
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Re: Focusrite Saffire Pro 40 re-cap
I'm also into modding my saffire 56. started my recap with some panasonics.
But: What would be the best opamp replacements?
The originals seem to be the same as you listed for the saffire pro 40.
Thank you for this thread!
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