I have a Behringer GMX 110 amp, which (in the manual) says I can plug in a aux. speaker (1 by 30 W 4 ohms).

One question: In the search for better sound is it worth building an aux. speaker cabinet and use the Behringer to power it?

Another question: If I do build the speaker cabinet, what should I use?

. One 12" speaker
Two 10" speakers
One 12" speaker and a piezo mid range?

Thanks! Wayne