1980 era dbx vca uses?

[ihscoutlvr74]

Gents,

I got a dbx 1bx expander for $2 at Goodwill and was curious if the VCA's were suitable for a GSSL, etc?  It may be pre 202 potted vca as they are on small card pcbs with 8 pins.  The assembly num on card is 260382 and its all discrete other than an LF351N opamp.  2 BC453c's, a 2sc1583 and a 2sa798 dual transistors are the other silicon devices.  There are 2 trimpots as well as several resistors, 2 electrolytics and a ceramic cap.

Does anyone have any info on a possible compressor application for these vca cards?  Any and all info would be greatly appreciated.

Regards, Nathan

 

[moamps]

....The assembly num on card is 260382 and its all discrete other than an LF351N opamp.  2 BC453c's, a 2sc1583 and a 2sa798 dual transistors are the other silicon devices.  There are 2 trimpots as well as several resistors, 2 electrolytics and a ceramic cap.

Hi,
it looks like the VCA in DBX 163,164.
More info you can find here:
http://www.dbxpro.com/vintage_download.php?product=163

Regards,
Milan

 

[abbey road d enfer]

dbx have temporarily used a small DIL module, about 1/2" by 1", but it had no opamp on it, IIRC. My understanding is, since it has an LF351, it is a module that is functionally compatible with the potted VCA and RMS modules. But I don't remember having seen a VCA or RMS self-contained module (one that does not need an external opamp to accomplish the log conversion) with a format other than the standard potted module format, although I certainly remember dbx using unpotted modules. Can you post a pic?