Older api 525 compressor in new 6B lunchbox?
« on: April 19, 2005, 08:26:06 AM »
I just obtained an older api 525C compressor (s/n 2268, Huntington, NY).

I installed it in my 6B lunchbox, but it's not passing signal. Maybe the unit needs to be serviced, but I first wanted to find out if the older units had different pin configurations than the current issues.

I've seen an undated 525 document that did in fact have a different pinout scheme than the current line of modules. Does anyone know if and when they changed this?

I tried calling api, but the head tech is off at the NAB show and the person I spoke to didn't know the answer.


CJ

Older api 525 compressor in new 6B lunchbox?
« Reply #1 on: April 19, 2005, 12:24:19 PM »
PM Paul Wolf. He is a member here.  :thumb:
If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

BradAvenson

Older api 525 compressor in new 6B lunchbox?
« Reply #2 on: April 19, 2005, 12:28:49 PM »
Yeah, there was a pinout difference for the compressor and the mic preamps.  At somepoint they changed the compressors to match the mic preamps.  I have the pinouts at the shop if you need them.

BradAvenson

Older api 525 compressor in new 6B lunchbox?
« Reply #3 on: April 19, 2005, 11:27:02 PM »
OK, I found my docs.  It looks like there was a change from the new EQ pinout.  Check out this page for the differences:
http://avensonaudio.com/tech/API/API%20pinout%20change.JPG


 

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