API 525 compressor

[enthalpystudios]

i think it's wonderful man, absolutely perfect. it is what it is ;]

how options for this and that?

 

[therecordingart]

Goddamn! Stop with the expense projects guys!!! haha I just got my Neve 1081 boards so that puts a huge dent in the wallet.

When do you think these boards will be run off?

 

[peter purpose]

[quote author="therecordingart"]
When do you think these boards will be run off?[/quote]

I'll get plenty, so don't worry about missing the boat.

 

[peter purpose]

[quote author="enthalpystudios"]
how options for this and that?[/quote]

Half past three.

 

[Rob Flinn]

Oi Purpose, when arya gonna stop bein' sucha top geezer ??

 

[jensenmann]

[quote author="peter purpose"]I've managed to squeeze in an upright discrete op amp for a balanced input, so will probably abandon the larger sized board.
[/quote]

Is the A4 DOA on the PCB supposed to be a 2520-footprint thingy? If so I´m missing the ground pin. And I´m wondering how it should fit there. The ones I have here are physically larger than the space on the PCB is. Or am I getting something wrong?
btw great work, Peter :thumb:

 

[peter purpose]

Hi Jens,
No, it's a very simple 5 transistor op amp based on a urei jobbie.

peter

 

[peter purpose]

[quote author="Rob Flinn"]Oi Purpose, when arya gonna stop bein' sucha top geezer ??[/quote]

Sturdy yourself lad.

 

[enthalpystudios]

glad the sarcasm bled through on that one.

that A4 presents some neat-o ideas eh.

this'll certainly be a fun one. ;]

 

[peter purpose]

Here is my quick attempt at the upright OA. I'll flatten is as much as I can to keep the height as low as possible.
This one is what I was planning to supply with the board.
Speak now if you think we need a full on 2510.

 

[hejsan]

I assumed the "high" and "low" inputs on the original 525C schematic where the balanced input.. shows what I know..
did they originally sell them unbalanced?

hejsan

 

[peter purpose]

The low input goes straight to ground on a standard ole 525c.

 

[Rob Flinn]

Peter 2.59AM Get some sleep in lad !

 

[enthalpystudios]

i see that in "off" the input to A2 is taken directy from the input.... in normal use (since I haven't used one), is there any gain in "off," and do the in/out controls have any effect?

 

[peter purpose]

Having never used one, I have no idea, but I've done away with that business and have a hard bypass in place.

 

[peter purpose]

[quote author="Rob Flinn"]Peter 2.59AM Get some sleep in lad ![/quote]

rgr

 

[peter purpose]

This is how it is now. If you flick between the two schematics, you can see the changes made.

 

[API]

Hi.

I want 2 of each, whatever becomes availible.

Thanks,
Dennis

 

[Kid Squid]

Absolutely first class Pete :grin:

 

[peter purpose]

Prototype coming along nicely.....