bridged 2 channel amp

Bridging the amp has nothing to do with what load is seen. A 4 ohm woofer will be "seen" as 4 ohms whether you have the amp bridged, mono, whatever. The amp will only see 2 ohms if you add another 4 ohm sub and run them in parallel.

When computing "load". Don't even bring the amp into the equation. Whatever configuration the subs are at connected to the speaker wires is the load. This will be the laod regardless of what kind of amp and how you decide to use the output of that amp (bridged, etc).

thankx for the info that is also what i believe and have practiced for over 15 years however another installer with 10 or more years exp begs to differ with this after the manual reads as i stated

thanx

well what the other installer is tryin to say is it is bad to 4 ohm mono a 2 ch amp with a single svc sub and that this will damage sub and amp cuz amp sharin 2 channels actually sees 2 ohm but hello we all know any amp is stable 4 ohm mono regardless of what the amp sees it still reading 4 ohm mono (4-8 ohm allowable mono) as any amp states same as (2-4 ohm allowable stereo)         i think he jus got confused and to protect reputation will not admit error as most people wouldnt                                                                                                                                                                 

 thanx to everyone in advance

I guess more can be mentioned...but the horse won't feel it.