Greenboy 2x15 as a sub?

[Kevsy71]

My band consists of vox/drums/bass/guitar/harmonica/tenor sax/keyboard. We've been using a humble gear4music PA ('pimped' with a Behringer PMP4000 mixer/amp), except me going through a greenboy 2x15 behind me. It's often been said that the instruments are indistinct when playing pubs/clubs.

Any thoughts on the following idea? I add a crossover, and route keys (low), kick/floor tom, tenor sax and the bass into the greenboy, taking low frequency load off the main PA. In which case, what is a sensible crossover frequency to start testing with - the Faital Pro 400s are rated at 35-4KHz? I was thinking 250k, any advice much appreciated

Cheers

Kev

 

[Bill Fitzmaurice]

That will only put undue strain on your 2x15. Get a proper PA, because the lack of definition lies in the midrange and high frequency quality of the PA, not the lows.

[Kevsy71]

1 minute ago, Bill Fitzmaurice said:

That will only put undue strain on your 2x15. Get a proper PA, because the lack of definition lies in the midrange and high frequency quality of the PA, not the lows.

Thanks Bill, much appreciated. With a proper PA (including a dedicated sub) should I still put my bass through the 2x15 and not the PA? Or does the 2x15 become surplus to requirements? It really is a lovely 2x15, hence the question...

[Bill Fitzmaurice]

If you have a good PA then your back line cab is more of a personal monitor, as it no longer needs to drive the entire room by itself. There's no reason why you can't still use a 2x15, but if your gear hauling capacity is limited the pack space that 2x15 takes up would be better served carrying a larger PA.