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Re: Two QSC RMX1450 vs One QSC 4050 for subwoofers

Posted by oldroadie (A) on August 26, 2006 at 13:54:56

In Reply to: Two QSC RMX1450 vs One QSC 4050 for subwoofers posted by posey on August 24, 2006 at 05:53:40:

Which will work better depends on a lot of factors, and with knowing the speaker specs, best guesses are all you're going to get.

Speakers are rated to deal with 'RMS' and peak power. Actually there is no such thing as RMS power. Some companies lable their speaker RMS, some lable them program. For adequate drive of a loudspeaker you want to use 1.5 to 2 times the RMS (program) power. And then keep your amp for clipping.

Bass needs attention paid to another factor. This is called damping. While most modern amps and loudspeakers have all but eliminated the need to worry about this factor, end users could 'mess up' this factor by using low end (small guage) wire, and bridging amps. Damping factor is the ability to stop a speaker's motion once it starts. The better the damping factor, the more the bass 'snaps' off the cabinet.

A non-bridged amp presents a better damping factor at the speaker then a bridged amp. Using a heavy gauge wire improves your specs all the way around ...including damping. For runs of 50' or shorter, 12 gauge is OK, 10 gauge is preferred.

Tom

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