Sonic Screwdriver
Member
Hello,
Following on from my post here:
http://www.groupdiy.com/index.php?topic=23161
I just prototyped (rats nest style) the EMI TG output amp configured as a summing amplifier and since it appears to work rather well thought Id post in The Lab.
There does seem to be a practical limit to the gain that can be utilzed in the amp which also limits the number of channels that can be connected of course but 16 channels works well and up to 32 are possible without too much change in amplifier characteristics.
Basic schematic is here:
http://picasaweb.google.com/PROAUDIO.DIY/SonicScrewdriver/photo#5080276959877391890
BTW I used a trifilar wound Cinemag output transformer with half steel and half nickel lams,
Cheers all
Following on from my post here:
http://www.groupdiy.com/index.php?topic=23161
I just prototyped (rats nest style) the EMI TG output amp configured as a summing amplifier and since it appears to work rather well thought Id post in The Lab.
There does seem to be a practical limit to the gain that can be utilzed in the amp which also limits the number of channels that can be connected of course but 16 channels works well and up to 32 are possible without too much change in amplifier characteristics.
Basic schematic is here:
http://picasaweb.google.com/PROAUDIO.DIY/SonicScrewdriver/photo#5080276959877391890
BTW I used a trifilar wound Cinemag output transformer with half steel and half nickel lams,
Cheers all