I found the answer. It's a low-frequency limiter for disk-cutting, in order to enable compatible mono disks (ie not too much bass excusion off-center).
-- Tom Fine
----- Original Message ----- From: "carlstephen koto" <cskoto@xxxxxxxxxxx>
Sent: Monday, February 25, 2008 10:14 PM
Subject: Re: [ARSCLIST] Fairchild 654 Compatilizer -- what is this thing?
I was on GearSlutz a couple of days ago and did a search. There is an unanswered post trying to find out what it is too. I'd just plug it into a CD player and output it to an AD are record what each of the knobs does.
On Feb 25, 2008, at 7:18 AM, Marcos Sueiro Bal wrote:
Fairchild was definitely known for its compressors, still very valued today. Have you tried gearslutz?
Tom Fine wrote:Hi All:
Knobs for threshold and release, so it's obviously a compressor of some sort. Does anyone have any documents on it? I need a connections-terminals list and power supply requirements. Thanks!
For the curious, it's covered in Patent 3281706 but I don't have time to suss that out right now.
- -- Tom Fine
-- Marcos Sueiro Bal Audio/Moving Image Archivist Preservation Division Columbia University