Success, I wired up a single 12w7 at 3ohm bridged off the amp and im not seeing any heat issues with the amp. Level of bass in the truck has effectively doubled, using only one sub. I find it hard to believe this amp is not stable bridged at 3 ohm load. I ran it on max for over an hour with no therm...

And so, using existing amp, the best wiring scenario is that of stereo at 3ohm both channel driven.

Is there any advantage to running one of the subs out of phase (ie reversing + and - on one of them) since i seem to be getting push/pull between cones if you know what i mean?

Yes, so in fact the 12w7 is a SVC 3ohm as opposed to a DVC like i thought it was. That explains the 3ohm reststance from the sub. Thank you for the correction, JL's documentation is pretty weak in that regard. I did finally find this on their site: "So why do the W7’s use a 3 ohm voice coil? We...

Guys, After sending both amps off to PG for cap replacement / tuneup, I finally got my ms2250 and M44 installed by a local shop and purchased 2x JL 12w7 DVC subs with a custom enclosure from them. Upon inspection of the install, i noticed (with my fluke meter) that each cone is wired internally in t...

Heres is a wiring pic.

In this pic, each sub shown in the drawing would just be a voice coil on the same cone.

Any problem running each voice coil at 4 Ohm, one VC to the front channel pair and one VC to the rear channel pair? Will there be any problems with the signal if the timing is off between the 2 channels? What i mean is, if the front bridged mono channel is driving voice coil 1, and the rear bridgd m...

Im planning on powering a couple 12" RF Power T112D4's off of the MS2250. 4 Ohm load to the amp all said n done @ 2x340w. Not looking for SPL numbers. Dont want to drown the M44 full range output with bass either. Hey, on the M44, if i run stereo out front and rear at 4 ohm to components, and i...

I still remember the April fools edition of Car Audio Mag from back then around 1990-92 that had the elusive "Manhattan-1" amp review as the April fools joke. Nuclear powered amp, liquid cooled, heavy water producing, put out like 10 gigawatt or some shit..... Right out of back to the futu...

Im planning on powering a couple 12" RF Power T112D4's off of the MS2250. 4 Ohm load to the amp all said n done @ 2x340w. Not looking for SPL numbers. Dont want to drown the M44 full range output with bass either. Hey, on the M44, if i run stereo out front and rear at 4 ohm to components, and i...

All contacts are appreaciated. Im kinda in a hurry to get this system installed. I just got a new slew of alpine gear for xmas and since i havent been in the car audio game in over a decade, im amped (no pun intended) to get it all hooked up. 1moreamp, could you pm me and let me know if and when you...

Some pictures of my gear

I was filling out the PG RMA form and i noticed the my M44 is serial number M440002. Does this mean it was the second unit made, ever ?

Also, on the MS2250, is the serial number the sticker in the corner that reads 220702?

If anyone has gone through the process of shipping amps back to PG for repair, how long does it take them to do a cap replacement?

Does anyone know a repair shop in the Ft Lauderdale area that could do some cap replacement / tuneup work on my M44 and MS2250?