My friend has a mono block amp (150rms... :x) going to 2 12's. Right now he has them wired in series and wants to know if each speaker is getting 150w a piece or 75w a piece. My understanding (from applied physics material :p) is that the first speaker gets more power than the second. I also am under the impression that if he had the speakers wired in parallel that each speaker would get 150w a piece... am I right... if not please correct me?

 

If the amp is rated at 150rms and you have the subs wired to the correct ohm load in which the amp produces the 150....then all they're getting is 75 a piece.

What amp & subs is he using? At what ohm load does the amp produce the most power? What's the ohm rating on the subs & how many coils do they have? Are they single or dual voice coils?

 

I see...


The amp is a Alpine Vpower MRP M200. It produces more power at 2ohms... but alpine says its 'unsafe' to wire the dual voice coil 4ohm speakers. The subs are some cheep MTX's with paper cones :p I think their recommended rms power is 250 or something low like that...

 

thanks btw

 

I'm not sure why Alpine would say that. Dual Voice coils(DVC) subs are meant to be wired in different configurations. DVCs just add more wiring options over Single Voice Coils.

The only problem is that if your subs are 4ohms and they are DVCs...you can only achieve a 4ohm load no matter if it's wired in parallel or series. If they are Single Voice coils...then you can get a 2ohm load by wiring them in Parallel. That'll give you the best result with that sub/amp combination.

 

alpine didnt say that.