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Ray,

I might have the schematic somewhere for the L-7 crossover. I also have an update crossover schematic....somewhere....that was SUPPOSED to become the L-7DX. This was going to be a high-end,...

TD,

I haven't been here for a bit 9personal life is wearing me out), but yeah - all the parting out is upsetting. I still have MY L-7's and of course hope they never fail. But I'm in a unique...

Fred,

I DID d othose LX'es, but the HP's I did were the HP-8B, HP-88F, etc. (AH!!!! I can't remember the model names anymore!!!!). THe HP-420, etc. were designed and built in Europe. I DO know...

John,

You should prefer the L-3 over the L-60T. The absolute bass output is the same, but the 708G-1 in the L-3 is MUCH smoother in its roll-off than the 116H-1.

Chris

All, I responded to Ed's PM regarding replacing/repairing L-5 woofers, but thought I would share with everyone. This advice really applies to all of the drivers (bear in mind, this is in regard to...

Sorry about the response delay - I'm still settling stuff from M&K...

RWW - that doesn't sound good. It sounds like you now have a rubbing voice coil. It MIGHT be a loose wire from overheating,...

RWW - so you took the straps off, and you ran two wire sets, one for the high frequency input and one for the low frequency input? You didn't change the internal jumper, did you? That's only for...

Hi, yall, I'm back! Been dealing with the M&K auction....
In answer:
1) The "uphill climb" in an L-5 is about +2dB from 200 Hz to 10kHz. Fortunately, ALL of the frequency sections climb and at the...

L-R filter? Do you own one and you took it apart? You guys are GOOD!!! Well, it’s very simple really:
As we all know and love, the JBL woofers tend to have more energy in their motors than most...

Hey, no problems on the questions. Actually I gave a lot of the placement diction to marketing for the manual, although I can’t say as I wrote it. And they did a heckuva lot purtier pictures, too!...

Actually, the CL-505 came after the rest of the line. Since they were designed in ’90, home theater was still just getting off the ground, so the center was not part of the original market plan. It...

That’s okay – we humans do that a lot….I think it’s why doctor’s call their workplace a "practice".
Engineers at JBL weren’t really in the monetary loop. You could find out numbers sold, and the...

No, I didn’t have anything to do with the 250Ti. That model was Greg Timbers’ baby. He does most of the high-end models at JBL, particularly for Japan, showing up sometimes in their magazines.
L...

And my name is Chris Hagen. There's a picture of me in the Stereo Review article on American speaker manufacture in 1988 or 89. I'm dropping a 2214H-1 into the ground plane pit for measurement for...

Okay, I'm new here - which you might find odd, but it is what it is. Are you all sitting down? I'm the guy that designed your L-7's....and 5's, and 3's, 1's, LX-300's, LX-44's, Synthesis 3,...