using two Mcintosh MC2102 in mono parallel mode


Hello,

I'm considering getting another MC2102 amp and running them in the parallel mono mode; my speakers have quite a low impedance (0.7 ohms above 6KHz). Does anyone have experience with this setup, or with another Mcintosh tube amp set up that way?

Here are some of the things I'm concerned about:

Will it work well if one amp is 4ys old and one is new?
Do the tubes on the two units need to be matched?
Does the amp input impedance change?
Does the amp sensitivity change?

Thanks for any advice on this,
-steverw
steverw

Showing 3 responses by bigjoe

what kind of speakers are you running that dip that low & what is their rated nonimal impendance? when you go paralell with the mc2102 the impendance drop's from 16, 8 & 4 ohm's to 4, 2 & 1 ohm's,i would think that your speaker's would reek havok on a mc2102 running it in stereo mode due to the low impendence dip,even if your running them from the 4 ohm tap the dip you mentioned is extremly low & cant be an easy load for that amp,does your current single mc2102 handel such a dip well?

if your speaker's truly dip that low then your probably on the right track getting another amp & running them in paralell because in paralell you can try your speakers on the 2 ohm tap or even the 1 ohm tap without putting such a demand on the amp.

i dont think ive ever heard of a speaker that dip's down to 0.7 ohm's are you really sure that figure is correct?

mike.
now you've peaked my interest in this,what did mac say about running 2 of them in paralell & will it help any issues with the low impendance?
thank's steve,i ran my mc2102 in bridged mono but i never had a reason to run it in paralell,good info to know though.

mike