Pro Audio Design Forum

Crusty - I'd PM jdbakker on that one.

Wayne

Good call....have you been snooping around my lab ???

Yeah. Where do you keep the coffee filters?

Those DC values look spot-on typical.

If Cgain is in series with Rgain and pin 5 is at ground, the output of the 1510/1512 should be less than +/-5 mV.

Does the output offset vary with gain?

EDIT: Randy - the more I think about it pin 5 may not be grounded.

Thanks Roger. Maybe we should do something. I've got some more basic 1510 stuff I'm working on as well. Randy - So that's Apex "Sr?" Or is it our own Apex Jr" As to the 47 uF if you're using a Cgain the Vos of the 1510 is going to be pretty low. Eliminating the 47 uF makes the 1646 wo...

....another lucky surplus store find

So you're not revelaing your secret?

The 47 uF is probably best left out between the 1512 and the 1646. Which drawing shows that?

Thanks guys.

I'm still a few days away from running cross-talk tests on the new layout. I've got something on my bench right now I can't easily teardown. Once I run that and check a couple of mechanical clearances we should be good to go.

Wayne

Notice the 1.5k Vishay S102 at 0.01% ...?.... I scored 100 of these for $5

Where?

Nice looking prototype.

Thanks John. So essentially the schematic here? http://www.picocompressorforum.com/forum/php/viewtopic.php?f=6&t=211&start=128 Do you suppose the MC33X78 would be suitable as opposed to an AD797? I was going to suggest as a "trick" circuit using the 1646 to generate Ec+ and Ec-. Th...

Wow. Thanks Paul.

Thought this was very interesting. Reminds me a little bit of the Soundcraft pan pot using NICs. https://proaudiodesignforum.com/images/pdf/Synthesize_Variable_Resistors_With_Hyperbolic_Taper_TL_Flaig_EDN_January_8_2009.pdf https://proaudiodesignforum.com/images/jpg/Synthesize_Variable_Resistors_Wit...