JBL 4732 PDF

JBL Incorporated, Balboa Boulevard, P.O. Box , Northridge, California U.S.A.. JBL M/HF-T. REV A. PACKAGE. WIRING DIAGRAM. The JBL T 3-Way Tri-Amplified ScreenArray Cinema Loudspeaker System is designed to deliver critical sound reproduction in medium to large cinemas. JBL JBL Professional. PA SKU # JBL MFR # Support The ScreenArray features true three-way system design enhanced for critical film.

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Search Everywhere Threads This forum This thread. Everywhere Threads This forum This thread. Should I modify my SRA’a or leave them stock? Thread starter Gary Weller Start date Mar 24, For a better experience, please enable JavaScript in your browser before proceeding. Forums Pro Audio Junior Varsity. Gary Weller Sophomore Mar 24, Mar 12, 0 16 Il. I recently got a steal of a deal on a pair of jbl SRA’s. One has a blown and I was thinking of putting in x-overs from A’s or modifying the originals to have the ‘s do all the work and by-passing the ‘s.

My thinking was the outdoor gigs coming up this summer and the lack of “throw” from the ‘s outdoors. Am I crazy for thinking this, should I just repair the blown and call it a day? I’m just not crazy about the ‘s only doing 1. Silas Pradetto Graduate Student Mar 24, Jan 11, 2, 0 0 Land of Steady Habits www. Gary, I don’t think you’re crazy. From my experience, the baby cheeks do not keep up, and do blow easily.

As I mentioned in another thread, the combination seems more at home flown in a club above the dancefloor than in a PA situation. That said, many use the s successfully for PA use same box, no cheekssince in many cases PA use doesn’t really need a ton of output in that top octave. Also in the marketplace thread, I mentioned that you should pretty easily be able to delete the low-pass on thewhich is probably just two components, an inductor and a capacitor.

You’d need a schematic of the crossover to know for sure, though. Maybe not to remove the components, but at least for me to decipher what’s going on there. Someone with crossover experience needs to confirm this, since JBL says it’s crossed at 6k.

Obviously, if there is no low-pass on it, then just unplug the baby cheeks and call it a day. Silas, I’ve got the pdf’s from both the a and the a.

432 I’m not a x-over expert either and not sure what would be involved. That said, If i have someone knowledgeable do the work, it may cost me nearly as jbk as buying a x-overs. I can get new a x-overs for a little more than the diaphram.


I think, this is a good way to go. When I decide to resell, I can offer the cabs as is, or offer them stock with a new diaphram.

I always wondered why jbl crossed the so low 6k. Charlie Zureki Junior Mar 24, Jan 13, 0 0 Detroit area. Look down to the Crossover post in this Forum Tim Weaver Senior Mar 24, jgl Just about everybody with these cabs does what you are wanting to do. Most people just remove the buttcheek and then boost the top octave on the main eq. It may not be the right way to do it, but literally thousands of shows have been pulled off with this method.

Like I said, it ain’t right, but it’ll work. By boosting the top really 2 octave s you’ll get a shallower rolloff to an extent.

I don’t want to start a crossover topology war here on the top end. That coupled with the fact that most club rigs don’t really need the very top octave s and you have a show.

You’ll probably get to about 10k doing this. Plenty for sibilants and cymbals. To do it right you need the crossover from the A or biamp the cab and roll your own preset.

JBL SR 4732

Whatever you do, remove those baby butts and block off the hole. You’ll save a little weight on an already heavy cabinet. If I had an extra amp worthy, I’d just bi-amp the boxes and eliminate the that way. How big of an amp would I need safely for the ‘s considering they’re 16 ohms? Realistically you can use anything on the horns. An XTi would be way more than enough and keep it in the family. 4372 the processing is available too. Those horns are really efficient. jlb

Used JBL SRX Loudspeakers for Sale |

A watt amp would suffice. Jan 11, 10, 7 38 34 Wallingford, CT www. I thought you were bang on until you started talking about impedance. Worry about power at the driver’s minimum impedance s. If the driver is specified at 8 ohms there is probably a reason for it. Peak voltages above the heat level the driver can take may be an excursion problem, and they may not. I am certainly an advocate for large HF amplifiers, but suggesting a watt amp for long term power jnl unrealistic without a very unique side chain limiter.

I know nothing about the driver in question. Silas Pradetto Graduate Student Mar 25, Tim Weaver Senior Mar 25, A watt amp would not suffice if he wanted to get the most out of the drivers.

JBL recommends a watt amp at 8 ohms. That’s still not enough. The driver, depending on the horn that loads it, has impedance peaks near 30 ohms within its operating range. To successfully meet the ” watt continuous program” rating at 30 ohms, you would need An amplifier capable of 67 volts at 8 ohms is equal to So, to even meet the basic watt program rating, you’d want an amplifier of at least Of course, this is ignoring the fact that the driver will handle peaks above watts jhl easily, meaning an even larger amplifier is probably safe, if properly limited.


The 12″ is a watt continuous driver that has a 95 dB sensitivity. The XTi is capable of watts at 4 ohms.

This gives us a theoretical maximum level of This is what this low frequency section can theoretically do before power compression occurs. It would take 96 watts to achieve So yes, a watt amp at 16 ohm would suffice. Unless you are running more than 1 cabinet a side in which the low freq would couple and you would want more HF.

Having more amplifier than that won’t hurt anything, but why buy more than you really, need? At a certain point you are wasting money buying wattage that you will never use. The XTi will be a perfect match for this driver. On top of all that, we Americans usually go a little heavy on the low end and have the HF response stepped down a bit.

Should I modify my SRA’a or leave them stock? | Sound Forums

Thats what we are used to. He is still using an XTi on the 12’s so the math still stands. He only has watts for the LF. By the time power compression kicks in on the woofs and our affinity for a laid back HF, I still say that watts will do the job.

I’m not saying “go find a watt amp”. Just trying to illustrate the point that HF drivers don’t need nearly as much power as the mid and low drivers do. Sometimes I feel that the people on this forum are tossing out recommendations that don’t make a lot of financial sense to the OP. Gary scored a super jgl set of low jbbl boxes.

Does he need to spend an extra couple of C notes to get the “right” amp, or should he use what is available and cheap? Also on a cabinet like this, I wouldn’t worry 2 seconds about 10k and up. It may take watts to get 10k up to our reference level, but at what listening position?

It may take watts to get 10k up to reference for that guy 45 degrees off axis. Is it worth it? Mike Caldwell Junior Mar 25,