TA7136AP SIL-7 mixing console. - diyAudio
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Old 5th September 2013, 02:55 PM   #1
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Join Date: Apr 2013
Location: Lappland - Sweden
Default TA7136AP SIL-7 mixing console.


Got an TA7136AP as first stage gain in every channel.
Well, it seems this is an cool high gain chip, but i would like
something more gentle, have it in an audio mixer.

Found an adapter socket SIL-7 to 8-DIP.

I was thinking of using this to be able to change opamp according to
whom i recording with my mixer.

Would this work without any major modification in the rest of the pcb?
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Old 22nd November 2013, 11:22 PM   #2
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Join Date: Apr 2013
Location: Lappland - Sweden
Default killer of an adapter.



This is it.
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Old 23rd November 2013, 12:51 AM   #3
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Join Date: Apr 2008
Location: Carlisle, England
You might have problems with oscillation if the op amp has a lot of gain.
But you could compensate with small feedback capacitor.
Murton-Pike Systems PCBCAD51 pcb design software. http://www.murtonpikesystems.co.uk
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Old 23rd November 2013, 02:30 PM   #4
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Join Date: Apr 2013
Location: Lappland - Sweden
Thanks for the tip. The replacements will probably have alot higher gain so its
probably a good idea. Now i just gotta figure out the single replacement. The thing is.
Those old sil-7 7136 have a really nice clipping to them, they are wonderful on some instruments, like a Roland 70s synthisizer wich makes it roar in the low hz like a lion. But they are dreadful on other instruments. I wonder how those old opamps would withstand de-soldering? but hey, they are only 5euro it seems.

So single opamp replacement.. Something fat, i dont want it really clear and detalied. Some single Burr-Brown FET?

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