If you read the JBL Pro link I posted, it clears it up pretty well.Originally Posted by invstbiker
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If you read the JBL Pro link I posted, it clears it up pretty well.Originally Posted by invstbiker
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Yes, Thank you sir, it did help. Not to beat a dead horse anylonger , my Phonic tells me both speakers are now "in phase", it sounds good" So I'll keep it as is and enjoy the music...
"It only costs 80% extra to go first class"
Originally Posted by invstbiker
Thats what it's all about. Crank them puppies up and enjoy.
4406, 4412A, L100, L100t3 (3 pair), L1, L7, 4645C, 4660A, 4695B, SR4735 and various DIY JBL Pro loaded systems.
Originally Posted by Steve GonzalesOriginally Posted by invstbikerWhile the lure of refreshing beverages may be compelling, y'all are quittin' much too soon.Originally Posted by Don Mascali
We now have one woofer wired backwards, as the battery test revealed it was connected correctly, according to JBL convention. So, now, the phasing is incorrect with the other drivers in that cabinet.
Battery check the other woofer, and the fact that something else is still connected wrongly will be revealed....
What's the system? 4343? Time to check the schematic to see how it's s'posed to be wired with respect to phase/polarity....
EDIT: Yup, unless I'm reading it wrong, woofer's supposed to be out-of-phase with the other three drivers. Follow the black input connections here:
http://www.jblproservice.com/pdf/Net...%20Network.pdf
[Phonic don't know that, OR the JBL polarity convention....]
OK, ZMAN, I'm backin' up the crane, and will break out the flashlight and check all wiring, etc...
"It only costs 80% extra to go first class"
Originally Posted by invstbikerThe positive terminal is black. "Positive voltage applied to the black terminal will cause outward cone/diaphragm movement".Originally Posted by invstbiker
Crossover networks are wired so as to keep the phase correct based on the network topology. Black striped wire from each crossover output goes to black terminal on each driver, solid wire goes to red driver terminal. Yellow pair is HF, white pair is MF, green pair is LF.
Then do the battery check on the system inputs. Black is still positive. If a cone moves in when positive voltage is applied to black speaker system input, something is miswired internally....possibly at the crossover's input from the external terminals. The red and black crossover input wires should match the red and black system input terminals.
Edgewound...JBL Pro Authorized...since 1988
Upland Loudspeaker Service, Upland, CA
THANK YOU, I will try this first
"It only costs 80% extra to go first class"
Man.. I sure hope there isn't a lake too close to where you live.. I'd be in it by now !! .. Hang in there, you'll get it right eventually.Originally Posted by invstbiker
See my post on DIY
Battery Test Re-Dux
Thanks to all
"It only costs 80% extra to go first class"
Sorry for my poor english but I smell a couple of idea to help you.Originally Posted by invstbiker
First your wood stand under 4343 is bad principe and unstabilize the speaker.
2-- the speakers is go down freq realy more than 4412 so more exication of modal room is created : and it is more tricky to position in room.
3-- your 4412 is a Bazooka set-up you put in cavity so the pressure is upper strongly... (try to invert position with your big 4343)
4-- dont minimize the realy realy problem to the #$%%?%??&?&*?&* old used switch on back 4343 to permit to switch bi amp is created a really loose response and power ( manys guy expose this problem and in first the great master greg Timber) (I personnaly exposed the difference result mesure in thread 4343 network modification.)
5-- the calibration of the rest of L-pad determine the importance to feeling of snap bass by tinuing balance sound.
6-- push up your big 4343 in more inch of the floor, according to greg timber the midbass is less flat.
7 ---
Thank you for that B&K, my 43's are just on the floor now, but probably need to be on a correct stand which I am searching for.
"It only costs 80% extra to go first class"
OH NO !!!!Originally Posted by invstbiker
Eternal drama...
I'm called JBL In california headquarter on this question and the red post is really positive signal and black is negative signal...
the reason why the driver is move backward is the coil is wired inverse way than standart. so your 15" inch driver is normally backward if correct connected.
so: it is not a circontantial error...
but check the rest of the drivers according to original spec...
p.s. your top upgrade 4343 is the cancellation of the bi-amp switch on back. this is a major lack of sound .
here : the test difference after (upper graph) and before cancel switch of bi-amp on back of the 4343Originally Posted by B&KMan
http://www.audioheritage.org/vbullet...&postcount=113
the rule is simple : hard as possible and maximum weight & stability stand create a real better transfert impact and less coloration.Originally Posted by invstbiker
I invite you to keep a few time to explore many many points on this regards and in regards of you 4343...
this forum is really plenty questions and solutions in regards of your 4343.
Today was the day that Bi-amping took place in my home. Kinda like the first kiss thing. Last week, after "fixing" the phasing challenge and last night re-wiring female XLR to male RCA for my phase linear, I was ready to go. A BIG THANK YOU to KEN P. who not only supplied the Ashly crossover but helped me with the dang wiring. I know some of you guys are thinkin' no big deal but to the beginner, it's a big deal. Just remember your roots... When I first turned it all on, (kinda like launching a spacecraft) the whole thing sounded a bit strange, THEN after tweaking the Ashly controls and turning down the midrange on the 43's....Originally Posted by norealtalent
TRIPLE JAW DROP. Holy shit, I'm never going back to internal crossovers again. Even the wife said "honey, your system sounds really good" Well that's a first. The BASS is really there!! I'm a happy camper. Next up is to try my "new" 4350's (break out the crane boys)
"It just won't end" Happy beer thirty to all.............
"It only costs 80% extra to go first class"
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