Harrison 10111 mic preamp board

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anders

Member
Joined
Jan 25, 2005
Messages
15
Location
Oslo,Norway,Europe
I got a bagload of 10111 mic preamp cards some years ago, together with even more 10104 output driver cards and 10120 VCA cards.
Mic cards are dated 1982, the others 1983-87. Is it reasonably straightforward to make decent mic pres with output drivers from such parts?
Does anybody have schematics/pinouts on these Harrison sub-boards, or perhaps even used such cards for a useful mic-pre project?
Cheers from Oslo
 

Attachments

  • 15+2 x 10111 micpres, 20 x 10120 VCAs, 55 x 10104 bal. line drivers.jpg
    15+2 x 10111 micpres, 20 x 10120 VCAs, 55 x 10104 bal. line drivers.jpg
    1.7 MB · Views: 3
  • 10111 mic-pre #0.JPG
    10111 mic-pre #0.JPG
    992.6 KB · Views: 2
  • PP1 10104-7 line drivers #0b.jpg
    PP1 10104-7 line drivers #0b.jpg
    481.1 KB · Views: 2

13engrsapper

Well-known member
GDIY Supporter
Joined
Oct 28, 2011
Messages
134
Location
Charleston, SC - USA
Me too, I did not realize we had them. I was about to machine boards to make our own line driver units for some stuff we are racking. Then, last night while gutting a bunch of Harrison stuff, I ran into these boards on a number of the channel strips.
 
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