I'm trying to match an old pair of JBL D131 woofers with a new MR/TW section. The woofers put out nearly 106db at 2.83V. Because of that I think I will be forced to use a horn for MR and TW for efficiency matching reasons.
The system right now is a D131 with JBL 075 bullet TW and a very old unmarked simple crossover/LPAD.
Why the change?
The system's tonal balance not bad; however, the MR lacks clarity and the higher frequencies are irregular.
Measured in baffle, the 075 produces 94db at 2k, 105/2.5k, peaking at 114/5k, and then dropping: 109/8k, 106/10k, 100/12.5k, 95/16K. Even with an Lpad in the original crossover, you can not achieve a balanced sounding high end. Either the lower treble sounds right and symbols don't or vice versa (you can hear true sounding symbols and the lower treble is too hot).
Taking both problems together (MR clarity and treble irregularities), it seemed that replacing the 075 with a wide range compression driver might solve two issues at once.
Any thoughts on this?
If that's the way to go, is it realistic to assume some of the drivers that claim response 500hz to 20khz really work well over such a wide range? Can I actually achieve the MR clarity and treble performance I'm looking for?
Advice and driver recommendations are much appreciated!