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,