Subs (Revisiting Again) - Dual JBL 2245H

[gferrell]

If you want to keep your woofer vertical, you can make something like that. In this case at close to 14' tall, it becomes a transmission line, or a huge organ pipe. Still very easy to fabricate and experiment.

Attachment 50303

In regard of the cost of a 2245, start by finding one as you don't find them easily Personally, I am currently looking for e155 and 2240 baskets to recone as 2245 ($40-$50). And will most likely fit them with $80.00 aftermarket recone kits.

http://reconekits.com/jbl2245h8ohmreconekit.aspx

http://www.audioheritage.org/vbullet...2&d=1299515568

Seriously, I don't think the wife would allow the pipes in the living room! I think they are cool though! I did find some 2245's with good cones for $165. The guy has 20 of them.

[gferrell]

On this page http://www.jblpro.com/catalog/suppor...=219&doctype=3

What I don't understand is under:

Equivalent
duct tube
and ID

(6) 4.0

Does this mean I need 6- 4" tubes or equivalent for a single 2245?

[Lee in Montreal]

Bummer. It's a shame that people are going to have to resort to more and more aftermarket kits for their legacy JBL's.

I am with you, but as long as people realize they are being scammed at $240 a pop, they will continue purchasing aftermarket...

Any reason why JBL charges $240 while a competitor makes the same for $80? Is the JBL really 300% "better"?

[JeffW]

So why not just use a cheap 18" driver from Parts Express or something. Reminds me of those guys who agonize over buying genuine JBL diaphragms for their JBL tweeters, then complain when the tweeters sound like crap with the aftermarker phragms. Why even start with a JBL carcass, why stir any JBL into the mix? There are plenty of speaker manufacturers out there. Parts Express list over (40) 18" drivers on their site, only 3 of which are JBL.

[JeffW]

On this page http://www.jblpro.com/catalog/suppor...=219&doctype=3

What I don't understand is under:

Equivalent
duct tube
and ID

(6) 4.0

Does this mean I need 6- 4" tubes or equivalent for a single 2245?

That's the correct total area for what's on their chart.

4" ID circle = 12.5664"^2

6 X 12.5664 = 75.4"^2

[Lee in Montreal]

So why not just use a cheap 18" driver from Parts Express or something.

Just because JBL's recones are obviously overpriced?
It is true there are better and cheaper woofers out there.

Because I have some JBL parts doesn't mean I shall necessarely drink their Kool-Aid. Or are we in a cult here?

[JeffW]

Or are we in a cult here?

The name of the website you are on is called "Lansing Heritage", there might well be a clue off in there...

[grumpy]

Heh, well if you can get a core for $50 and a kit that works for $80, and do the work yourself,
then I guess it would be pretty damn hard to buy a better 18" driver new for $130.

It's just a lot of ifs. Knock yourself out. The core can be reused, regardless

[pos]

JBL does not give a fuck about these vintage cone kits and discard them one after the other, and they were made by external companies anyway (and many different companies have made the 2245 kit for example), so I think we should start looking for good replacement kits ourselves, and maybe gather some knowledge here about the good ones (T/S, etc.) ...

[4313B]

I am with you, but as long as people realize they are being scammed at $240 a pop, they will continue purchasing aftermarket...

Any reason why JBL charges $240 while a competitor makes the same for $80? Is the JBL really 300% "better"?

I suspect it's because they have to pay their fearless leader some $40 million dollars a year. Just a wild guess on my part.

I could see the kits being expensive when they were Made in the U.S.A. I can't justify their expense now. I sure as hell wouldn't buy any now. I haven't bought any since June, 2010 when I was told for the final time to "get them while the getting is good".

I think we should start looking for good replacement kits ourselves, and maybe gather some knowledge here about the good ones (T/S, etc.) ...

You're probably right. It would seem that time is finally upon us.

[gferrell]

That's the correct total area for what's on their chart.

4" ID circle = 12.5664"^2

6 X 12.5664 = 75.4"^2

What is better, multiple tubes, one big one or something in between?

[Lee in Montreal]

Hey mister Ferrell. You can still put a 2245 vertical in a sonotube and end up with a layout like that. One cap at each end. Vertical board. Slit the sonotube at the bottom. JBL did it in square shape a few decades ago... If your ceiling is 8ft tall, you can have a 14ft path ( 2 x7ft) good for 29Hz at half wave length.

We are talking little money and not much time.

[Ruediger]

On this page http://www.jblpro.com/catalog/suppor...=219&doctype=3

What I don't understand is under:

Equivalent
duct tube
and ID

(6) 4.0

Does this mean I need 6- 4" tubes or equivalent for a single 2245?

As I understand it "ID" means "inner diameter".

[Ruediger]

Hey mister Ferrell. You can still put a 2245 vertical in a sonotube and end up with a layout like that. One cap at each end. Vertical board. Slit the sonotube at the bottom. JBL did it in square shape a few decades ago... If your ceiling is 8ft tall, you can have a 14ft path ( 2 x7ft) good for 29Hz at half wave length.

We are talking little money and not much time.

I just added the Bose Wave Cannon patent paper to the technical references thread.

Ruediger

[Lee in Montreal]

The Air Coupler was designed for the 2245h specifically.