JBL Array 2235 Be project

Good work Frank. Personally, I'd have rotated the drivers clockwise slightly to ensure the top and bottom screws lined up vertically (sorry, but that would bother me). Otherwise, well done. I'd love to hear them some day.

I also like the room acoustic equipment disguised as plants:D.
 
Dev said:
Good work Frank. Personally, I'd have rotated the drivers clockwise slightly to ensure the top and bottom screws lined up vertically (sorry, but that would bother me). Otherwise, well done. I'd love to hear them some day.

I also like the room acoustic equipment disguised as plants:D.
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Dev,
I have a very indulgent partner;-)
I know what you mean about the bolts.
I had little wriggle room, these drivers are wider than the JBL's, I wanted to but found I didn't have enough baffle spare either side to do it safely.
Another thing I noticed was as the outer holes are on every other corner, had I just rotated one full edge for drilling I could have a mirror image bolt pattern.

Cooky
 
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Pro circles street:D.

The TAD's are indeed excellent(1600x series) but the re-coning situation with some units and the rep for de-maging of s/h pro units added to the unavailability of JBL 1500al's or 1500fe's prompted what if? enquiries among engineers/pro installers that I know personally.
With particular requirements of excellent midrange performance and up to 1.2khz xover, the unit mentioned most was the PDN.15BR40.
Proof of pudding is in the listening of course and even if some TAD's came up I wouldn't buy-the PD's are superb.
 
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2 X JBL 2452H compression drivers and new 4" Truextent 4008 Beryllium diaphragms are winging their way from the US as I type. This will be the the final chapter in this project.
 
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Nice spanking new diaphragms

[
Phase plug end on



The 2452's ,Ti dias removed, gaps cleaned ready.



The 2452's with their new dias dropped in.

Fed with 300hz-20k sine wave sweep as the fixing screws are gently tightened up ensuring no buzzes evident. They went in very easily needing only one repositioning adjustment.
 
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RTA @1m on axis for left and right JBL2452/Truextent Be4008/SAM1horns;

5795991029_55184a3415_z.jpg


5796554134_218de77d13_z.jpg


+/- 1dB from 650-16khz near as dammit.
 
Thanks T,

The 4 'bands' of peq was very easy to dial in-all cut no boost.
There's a lot more to it than a flat frequency response I know but nonetheless bloody marvellous;-)
The Truextent upgrade for the older 24** series JBL's is very worthwhile.
Dropping a TX Be dia into the latest generation 2450/2452 JBL cores gets you pretty close to sota. That said the 2435Be offers amazing performance for silly money s/h.
 
andyoz said:
I read a technical review of the LSR6332 from a well regarded studio designer (Philip Newell).

On every count, the LSR6332 performed incredibly well for a system that doesn't really cost the earth - about £2,500/pair. On-axis, Off-axis Frequency response, distortion, etc. Just shows you don't need a dome mid to produce good results. I think his general conclusion that the crossover is REALLY well sorted on them and whoever did it knew the drivers like the back of their hand.
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A really late response to this post.

I contacted Philip Newell. He did not do a review on the 6332. Andy, If you happen to read this, who else could have done it?
 
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This was an enjoyable and relatively easy project to get together with results that far outstrip the initial cost. Try it you may be surprised.
 

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