Today, I took advantage of the fact that all my neighbors were heading out to work this morning (I am still on leave of absence to recover from hip surgery. I have to use a cane still) and all the aged ones, several houses away, are mostly deaf anyway (I trust).
I set things up on my back deck and cranked this enclosure up all by itself at first, then adding a very powerful full range enclosure (no other subs).
My high boxes are rather large, 8 cubic feet (tallish) enclosures each with 2 - JBL E140s, 1- JBL E120 (in its own sealed enclosure), JBL 2380/2445 bi-radial horn/4 inch compression driver combo, via passive XO (sorry, I forget the JBL model number, bringing the horns in passive at about 800Hz, ), dual 2405s (ultra hi-frequency drivers) via passive N7000 XO. In other words, these upper
Sohmbitches are very efficient, incredibly accurate and, if need be, they can get extremely loud!!
I was originally trying to stay vintage with all my drivers AND power, but I am using a very powerful modern-ish high power amplifier for the sub. The vintage electronic 2-Way Stereo crossovers I am using are Crown VFX-2. (I am shooting for a totally vintage set up, eventually - ;^)).
Using 1 600W/channel sub amp (driving the Housewrecker components - about 3 times as much power as I need, but HEY, it is one of what I have on hand!!), two DC-300s, bi-amped (1 for the dual 15s, and 1 for the 12s, horns and Ultra HF drivers.
I crossed over the sub (Housewrecker) at 70Hz (using a modernish Crown CTs-1200) allowing the dual 15s to come in strong at that point (using 1 DC-300 for all four 15s), then the single 12s, horns and super tweets came in at 220 Hz (using the second DC-300).
The best way to put it ...
A single 15" HW, doing only low sub duty, kept up with the rest of the system quite well!! REALLY WELL!!
I came up with those XO points after almost an hour of really loud testing/measuring with pink noise and several CDs to enjoy.
I guess I just wanted to prove to myself that as good as this thing sounds at a whisper, it will also shake the ground if called upon to do so.
Only two people stopped by during all my testing - one very confused teen tooling by on a scooter (I discovered that I was older than his grandfather, but somewhat more cool, it seems) and my neighbor's wife from three doors down, driving home after a shopping trip.