What do I do with these?

[jrfred453]

I just bought these Melcor cards on eBay. They looked interesting so I just bid. What can I do with them?
http://cgi.ebay.com/ws/eBayISAPI.dl...2785&_trksid=p3907.m32&_trkparms=tab=Watching

 

[jrfred453]

I found a bit of info on these by using the search function in this thread:
http://www.groupdiy.com/index.php?topic=16092&postdays=0&postorder=asc&start=0

I still have some questions.
Does anyone if this is a line or mic preamp card?
What transformers should be used for in and out?
What's the pin-out of the edge card connector?
What's the operating voltage of this thing?

 

[shabtek]

I can't answer but you could trace to see how the opamp footprint is connected : melcor opamp pinout available. where does it go? power is usually bipolar 15 to 18 vdc, so see where on the card edge it connects...also polarity of electro caps can indicate +/-/0v rails. are little metal cans opamps (6-8 pins) or transistors (3 pins)? it may be a monitor/cue or aux send/return amp?