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If you had a MC250 &(3) 8ohm E120s cab how would you wire it

PostPosted:Wed Jan 16, 2013 7:44 am
by cripeowner
I come up with 21 ohms parallel 24 ohms series. Would this damage the MC250? I run it stereo one side not bridged. I know a 2x12 is easier but I'm curious as to how Jerry wired the 3 speaker cab. I checked past threads and couldn't find it.

Re: If you had a MC250 &(3) 8ohm E120s cab how would you wir

PostPosted:Wed Jan 16, 2013 9:16 am
by cripeowner
After some thought if I have 2 wired to 4 ohm and add the 3rd that gives me 2+ ohms. The mc2300 had a 2 ohm tap i believe. I can put 2 in series for 16ohm + the 3rd would give me 5+ ohms. So the question is which would be better considering the mc250 does not have any tap less than 4 ohm. Neither? Stick with a 2 twelve cab? I don't want to damage the mc250

Re: If you had a MC250 &(3) 8ohm E120s cab how would you wir

PostPosted:Wed Jan 16, 2013 9:18 am
by myoung6923
I seem to remember some talk a while back that Jerry had it wired for 2.3 ohms and ran in to the 4 ohm terminals.

I could be completely wrong though...

Re: If you had a MC250 &(3) 8ohm E120s cab how would you wir

PostPosted:Wed Jan 16, 2013 2:24 pm
by cripeowner
Found the thread and yes it was thrown around that they were running 2+ ohms on the 4 ohm tap but also Glenn from Hard Truckers mentioned Parish would often have a speaker back stage so they could monitor JG so the load would be even (4 speakers) in that instance. My question if anyone knows can you damge a MC this way?

Re: If you had a MC250 &(3) 8ohm E120s cab how would you wir

PostPosted:Wed Jan 16, 2013 2:41 pm
by Dozin
myoung6923 wrote:I seem to remember some talk a while back that Jerry had it wired for 2.3 ohms and ran in to the 4 ohm terminals.

I could be completely wrong though...
That's correct Ron Wickersham said it won't hurt the amp at all. Macs are very forgiving of the unbalanced loads

Re: If you had a MC250 &(3) 8ohm E120s cab how would you wir

PostPosted:Wed Jan 16, 2013 3:57 pm
by Dozin
btw: that's 3 speakers in parallel, which is 2.3 ohms in the 2 ohm slot. So the 4th speaker would be 2 ohms anyway

Re: If you had a MC250 &(3) 8ohm E120s cab how would you wir

PostPosted:Wed Jan 16, 2013 5:44 pm
by mijknahs
3 x 8 ohm speakers = 2.67 ohms. Close enough to 4 ohms for a McIntosh.

I'd run the amp in bridged "mono" mode but you might like the sound of just one channel better at 50W if you don't need to get that loud (but then why use 3 speakers if you don't need to get loud?).