Will the 4 ohm double if I bridge my Mcintosh???


Hi (Aball) All,

I recently aquired a nice Mc7100 via "The Gon". That I really adore. Thing is it didn't come with a manual. I know from internet searches that it's rated: 100watts X 2 8ohms/ 150watts X 2 4ohms & 300 watts mono at 8ohms(no 4ohm listing when bridged to be found). I also know that I could probably purchase a manual from www.audioclassics.com
But, thought I should try here first.

Will the 4ohm also double if bridged???

Reason for asking is I plan on getting new speakers in the near future and may grab another 7100 (dual mono's) should I decied to go with some power hungry monsters like Dynaudio's, Martin Logan's, and Maggies just to name a few.

Thanks for your time,
jalen01

Showing 1 response by kzelin


Virtually no amplifier actually doubles power into 4 ohms.
Many amplifiers may claim this, but, typically, they are under-rated into 8 ohms, and slightly over-rated into 4 ohms. Unless they have no current limiting, in which case the reliability may come into question. On to your answer...

The mc7100, if bridged , is not designed to operate into 4 ohms. It might overheat and you would be stressing it if operated for extended time at full power. If you do NOT listen very loud, though, and just want a lot of power for peaks, then it will be fine.

Do not stack anything on it, give it a few inches to breath.