Anyone recognize this?

[pucho812]

Got asked about this card.  They are not sure where it's from.  I am not sure either.  Suspect is API.

I do see the Jensen line output transformers and 5532.

 

[pucho812]

Another photo.

 

[QUEEF BAG]

i don't think api...the lettering does not look like it...

so, 6 caps 5 resistors and 2 trannys  are the only original parts?

 

[shabtek]

Looks similar to some broadcast modules I picked up on blk mrkt made by 'pacific recorders' iirc. Same or similar transformers but different circuit and initials etched on card

 

[clintrubber]

Auditronics used alike Jensen TXs as well, but will have had their logo on the PCB.

 

[mjrippe]

Auditronics used alike Jensen TXs as well, but will have had their logo on the PCB.

Auditronics (and others) also used a pair of transistors along with the IC.

The boards show pads for more components, as well as two more transformers.  Perhaps it could be configured as a quad output board as well...

 

[clintrubber]

Auditronics (and others) also used a pair of transistors along with the IC.

They (Auditronics) also spent a Jensen on the output of a test-oscillator module, IIRC indeed output-stage with IC-opamp+2 BJTs.

That TX must be pretty bored, by seeing just a few frequencies in its entire life  ;D

 

[pucho812]

I would have expected some bjt's as well like perhaps a bd139 and bd140 after the opamp to drive the transformer properly. 

The board itself came from dan alexander audio, the person asking me about it suspected API as it had a 22 pin edge connector.

that's all I got.  maybe MCI? I can't recall if they used jensen transformers.

 

[mjrippe]

All the "big boys" put their name or logo on the PCB.  This is a smaller company or custom build.

 

[Bill Wilson]

Definitely not MCI!

 

[mjrippe]

All the "big boys" put their name or logo on the PCB.  This is a smaller company or custom build.

Looking again, I see the "ACI" logo, but that rings no bells and no good google hits.  Also noted date code of 1985 on PCB and ICs.