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AION Aurora - Ross Style Compressor

Started by Zico, May 30, 2017, 11:48:59 PM

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Zico

May 30, 2017, 11:48:59 PM
AION Aurora - Ross Style Compressor
This was a challenging buid and I ended up building two of these.
The first build I could not get to work and after many hours trying to debug it, left me thinking I had a bad IC.

To prove it was the IC, I build another one (it was easier then desoldering the IC) but got the CA3080 IC from Small bear.
I used the treble MOD and changed the C1 capacitor to 150pf over the standard.
The new build worked great and I am super happy with it, it does get a bit noisy when the sustain is past halfway but not too much
This build taught me the value of using sockets for my builds and that there are many counterfeit CA3080's on the market.
   




mjg

#1
May 31, 2017, 01:38:12 AM
Very nice!  I like all three of the builds that you've put up recently.

Yep, always socket, and always doubt that 'sweet deal' for cheap ICs. 

wgc

#2
May 31, 2017, 01:38:33 AM
Nice build, did you get the old one working too?
always the beautiful answer who asks a more beautiful question.
e.e. cummings

stringsthings

#3
May 31, 2017, 04:38:39 AM
Very nice!  I like the "notes in a vice" pic.
All You Need Is Love

Zico

#4
May 31, 2017, 06:44:54 AM
Quote from: wgc on May 31, 2017, 01:38:33 AM
Nice build, did you get the old one working too?

Yes the new IC from small bear fixed the original build, it was quite ugly getting the old IC out lol ;)

On the socketed build I tested all the CA3080's I purchased and all were bad :(
Lesson learnt on cheap source of IC's lol

Zico

#5
May 31, 2017, 06:46:03 AM
Quote from: stringsthings on May 31, 2017, 04:38:39 AM
Very nice!  I like the "notes in a vice" pic.
Thanks had some fun in photoshop making it

bluescage

#6
May 31, 2017, 07:59:12 AM
Nice build. Love the artwork!

JC103

#7
May 31, 2017, 10:27:58 PM
Very cool! I have plans to get one of these built up this summer. Out of curiosity did you use the Dyna or Ross cap values? What are your thoughts on the tantalum caps in this build?

Zico

#8
June 01, 2017, 08:59:51 PM
Quote from: JC103 on May 31, 2017, 10:27:58 PM
Very cool! I have plans to get one of these built up this summer. Out of curiosity did you use the Dyna or Ross cap values? What are your thoughts on the tantalum caps in this build?

I used the Ross values but changed C1 to 150pf instead of the stock value.
I like the tantalum caps, they are quite compact for their capacity and I feel they work well. 

Boba7

#9
June 03, 2017, 09:27:39 AM
Looks really nice!

It's such a great pcb, and a great circuit. Good job!
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