Sub crossover with prosound amps?

[evan]

For the last few years I've been using a Marantz SR4600 and Paradigm Cinema 110 speaker package, but I'm planning on getting into some DIY speakers and subwoofer with some pro-sound amplification down the road.

Compared to most people, I'm sure my system goals would be considered to be in the budget catagory and bang-for-the-buck is important. After doing some looking around I'm thinking of using one or two MJ-18's and some QSC RMX series amps. I'm building a pair of Zaph's BAMTM for a friend and I'll see how I like them before I turn them over to him.

For subwoofer systems, what do people usually use as a crossover? Based on what I can find in the manual for my receiver, it doesn't have a variable crossover point for the subwoofer preout. Do higher-end receivers often have variable crossover points, or do most people use external components?

[whoaru99]

The SR4600 has crossover settings for sub output. Looks like the choices are 80, 100, or 120Hz. It's in the speaker size setup menu in the "LPF/HPF" settings.

If all else fails, RTFM. It's in there, but not very clearly indicated. Look in the menu flowcharts on or around pg. 16...

[evan]

The SR4600 has crossover settings for sub output. Looks like the choices are 80, 100, or 120Hz. It's in the speaker size setup menu in the "LPF/HPF" settings.

If all else fails, RTFM. It's in there, but not very clearly indicated. Look in the menu flowcharts on or around pg. 16...

ops: Wow. You're handy.

That's better than I thought it had, but is that one adjustment all that most of you use for the transition from speaker to subwoofer? The nice thing about the plate amp on the little sub I have is that it has a variable low pass crossover on it that opens up the options a bit.

[whoaru99]

Generally, if you use the bass managment in the receiver, the sub's low pass filter should be bypassed/disabled (if that's an option on yours) or set to the highest value.