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In Reply to: McIntosh MC-60 choke need posted by ericjulius198@hotmail.com on March 9, 2007 at 14:07:56:
Eric
Steve is correct on the choke values but what I did was go to radio shack and got a 2mh choke and it works well...If you dont have the chokes on the plates,the amp will oscillate and motorboat like all get out.
The big choke is 8hy I belive and hammond would be a good bet..I have 4 mac mc60s and one was born without the big PS choke but it has the holes to mount one in it..The unit also has a pair of neon bulbs on the chasis.You dont need the choke persay but its nice to have..Now some companies built it into the power trans.
Follow Ups:
Mike:Surely you meant to type 2uH and not 2mH. 2mH is pushing 1000X the value of the original chokes. 2mH would be excessive don't you think esp since this effectively adds to OPT primary leakage inductance, the very parameter the Mac bifilar winding is designed to reduce. Also, FWIW, SAMS lists the PS choke @ 1.8H/37ohm. My own meas pretty much verify this value.
Yes steve
I meant 2uh..Im still reeling from the experience with the 29 dollar cd player on the reference system lol.
Steve 1.8 makes more sense and the citation 2 is .7h and Im thinking of another amp thats 8h and maybe w5m..I have too many amps.
Yes steve
I meant 2uh..Im still reeling from the experience with the 29 dollar cd player on the reference system lol.
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