I'm ready to finish up my first A12 (I hope I have done it correctly!) and need to connect the SCA op amp. How do I solder it on? There is no way to reach the connectors. Maybe it doesn't need solder?
Also, the instructions say the original API op amp worked best with +/-16VDC. What does the SCA op amp use? The same?
Installing the op amp
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Installing the op amp
by jimi » Thu Jul 14, 2005 1:49 pm
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by tele_player » Thu Jul 14, 2005 2:47 pm
Didn't you install the Mill-Max sockets? They're in the parts list. The op amp just plugs in.
I used +/- 18v
I used +/- 18v
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by jimi » Thu Jul 14, 2005 3:13 pm
Yes, I did install the sockets. I thought the op amp needed to be soldered into them. Good to know it doesn't.
Why did you choose +/-18V? I haven't found any docs on the SCA op amp yet - maybe I'm just looking in the wrong places...
Why did you choose +/-18V? I haven't found any docs on the SCA op amp yet - maybe I'm just looking in the wrong places...
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by tele_player » Thu Jul 14, 2005 4:08 pm
I think Tim commented on this once before... but I chose 18 because I had an Avedis op amp in the first one I built, and Avedis suggested it was a good number for his part. I plugged in the SCA part, and it worked fine.
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by Sean Halley » Thu Jul 14, 2005 5:25 pm
Tim said "between 18 and 20" for his opamp in another thread last year sometime.....
S..
S..
The point is not to make the changes, it's to play ideas in time - Scofield
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