JBL 940T info?

[Caseworker]

JBL 940T Project

Afternoon all,

I got a possible lead on some JBL 940T speakers. Surprisingly there seems to be very little info out there on this model. I certainly don't need any more speakers, but I could potentially pick them up pretty cheap. Anytime any JBLs show up locally I can't help myself.

Does anyone own a pair of these puppies, or have any info on them?

Thanks in advance!

Lorn Michaels

 

[relaximus]

8" and 10" Aquaplas low frequency drivers
5" Poly mid
Titanium tweeter (022Ti I believe)
4 ohms
94db @1w/1m
Ported enclosure
Approx. 42"x9.5"x18.5", 75lbs

Dave

 

[Caseworker]

Thanks for the info Relax,

Looks like I'm going to be picking these up this afternoon. The guy says they are in pretty good shape, we'll see.

I'll post some pics when I get them home. I'm sure they aren't on par with upper end JBLs of the 70's but I'll give them a go!

If anyone has heard them, I'd love to know your impressions.

Thanks again,

 

[Caseworker]

Well, I picked them up.

They're a couple of duds. The upper mid and tweeter are fried in both speakers. Besides that, I am pretty unimpressed with the quality of the woofers in these speakers. They seem pretty cheesy, no heft to them at all. It's hard for me to imagine these able to handle 300 watts.

The only redeeming factor is the heavy duty cabs, they look to be 1 inch mdf, and they feel it, they are heavy suckers. The crossovers look to be of good quality as well. I guess I'm happy I didn't pay much of anything for them.

I wish there were more info on these, I'd like to look into getting some better, aftermarket woofers in them and see how they sound.

 

[Caseworker]

Morning everyone,
I've been thinking about what to do with these 940T's. I'd like to turn these cabs into something usable. I can't see throwing out good solid cabs like this, but I'm unsure what exactly to do...

They are 3/4" mdf, open inside except for the isolated mid.
The factory crossover is:
200Hz
800Hz
4kHz

As Relaximus stated:
41"x9.5"x18.5", 75lbs (actual cab is 41" high, not 42")

At minimum, I could just replace the mid and tweeter and see how they sound. I just don't have high hopes because the 8" and 10" woofers look so wimpy.

I could replace all drivers with higher quality ones and possibly tweak the crossover, but to be honest I wouldn't know where to start. I don't have nearly the expertise to know what drivers and configuration would be best.

Or, I could possibly turn one or both of them into subs for my HT.


Does anyone have any suggestions or Ideas?

Thanks much!

 

[Fred Sanford]

Morning everyone,
I've been thinking about what to do with these 940T's. I'd like to turn these cabs into something usable. I can't see throwing out good solid cabs like this, but I'm unsure what exactly to do...

They are 3/4" mdf, open inside except for the isolated mid.
The factory crossover is:
200Hz
800Hz
4kHz

As Relaximus stated:
41"x9.5"x18.5", 75lbs (actual cab is 41" high, not 42")

At minimum, I could just replace the mid and tweeter and see how they sound. I just don't have high hopes because the 8" and 10" woofers look so wimpy.

I could replace all drivers with higher quality ones and possibly tweak the crossover, but to be honest I wouldn't know where to start. I don't have nearly the expertise to know what drivers and configuration would be best.

Or, I could possibly turn one or both of them into subs for my HT.


Does anyone have any suggestions or Ideas?

Thanks much!

I think (not sure) that there are Goldwood tweeters that are a drop-in replacement for very low $$, but the ones I've heard don't sound quite as good to me as the OEM JBLs. Mids should be easy to source, I think they were common to other models, and are a common size if you want to just get things up & running quickly. I wouldn't put a bunch of $$ into getting them going just to check out, they weren't too highly regarded when new, but a couple bucks might make them usable for a listen or at least more readily sellable.

As far as subs or changing drivers, others might have suggestions.

je

 

[karlo]

The factory crossover is:
200Hz
800Hz
4kHz

wow! those are some highly approved karlo pinch points ! you could get away with
all sorts of car/home/PA drivers in that scheme . cool. i like it.

 

[6mantoys]

I had a pr of the 940's and for pounding out the volume excellent.Thats about it though.

 

[Caseworker]

Thanks for the input folks!

I'm kinda thinking I'll just see if I can get some replacement tweeters and mids, and send these on to someone else. I'm not brave enough to spend $300-400 on new drivers and have them sound so-so.