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Motorola 3- channel SK76 date? vs. tube compliment

Posted: Mon Jul 13, 2026 3:51 pm
by randyrago
not allowed to post photos yet, but the code is:

10 M 60 ---(the M is actually the Motorola logo)

october 1960?

VM record changer corresponds to 38th week of 1960

Now for the REAL question, up to now, info ive been able to get says that this model used 6V6 outputs, but mine has ECL82/6BM8 outputs, exactly like a 1964 Lafyette LR-400 on the bench right now. four year differece, Was Motorola that far ahead of the pack, or do i have a franken-ola :roll:

Re: Motorola 3- channel SK76 date? vs. tube compliment

Posted: Mon Jul 13, 2026 5:24 pm
by William
Hi Randy. The 10M60 is correct, October of 1960 is the build date. Do you know your chassis numbers, that will help?

I have a Motorola SK-52, Drexel Declaration cabinet, amp chassis HS-839A, build date September 1960 and it has the 6BM8/6BQ5 amp chassis. Brettsky99 and Motorola Minion (both very knowledgeable with Motorola) will know about the 6V6 vs the 6BM8/6BQ5 chassis and why yours has the chassis it has. I am guessing somewhere in the 1960's era Motorola made a production change.

Bill