Bridged Mono


Hi everyone, have a super basic question...

If you take a stereo amp which supports bridged mono, the watts usually double, i.e. 100 watts @ 8 ohms -> 200 watts @ 8 ohms. I have noticed even if the amp is rated at 150 watts @ 4 ohms, the specs do not show 300 watts @ 4 ohms bridged. Is 4 ohms not rated/recommend in bridged mode?

Thanks!

UPDATE: Sorry should have searched more thoroughly this was answered here: https://forum.audiogon.com/discussions/will-the-4-ohm-double-if-i-bridge-my-mcintosh
eziggy

Showing 1 response by kijanki

eziggy, Power is proportional to output voltage squared. Since output voltage doubles in bridged configuration power will quadruple (400watt@8ohm).  Current also becomes doubled and amp might not be able to deliver it.  That's why 4 ohm bridged is likely not supported.