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Old 5th February 2013, 05:15 PM   #11
more10 is offline more10  Sweden
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Hi Lee

You can run Hornresp in Wine if you have an Intel Mac. Hornresp

You can also run akabak in wine.

Start with Hornresp and export to akabak where you can add more horn segments, hornresp is limited to 4 segments. It will not do much diffence though, 4 segments will give you a very good simulation.
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Old 5th February 2013, 05:30 PM   #12
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Quote:
Originally Posted by Lee in Montreal View Post
BTW When you mention that the 2242 is "not the best", are you refering as "not he best for home duty" or "not the best for PA". Those would be two very different requirements. The 2242 has a relatively low Qts (0.28) and a strong motor. The venting allows for great cooling. This is perhaps the best sound reinforcement woofer JBL has made in decades. And that's why it is widely used on dance floors. Both on bass reflex cabinets and horn loaded ones.
I only meant the JBL 2242H not good for horns. Take it at face value (simulation program, not my experience). I only see it being used as (front) bass reflex enclosures.
Attached Images
File Type: jpg 18in JBL for horn loudspeakers.jpg (159.8 KB, 137 views)
File Type: jpg JBL 2242H horn simulation.jpg (29.8 KB, 132 views)
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Last edited by Inductor; 5th February 2013 at 05:54 PM.
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Old 5th February 2013, 05:33 PM   #13
more10 is offline more10  Sweden
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Lee

Can you give the cross section areas and lengths in centimeters? Ill do the simulation for you
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Old 5th February 2013, 05:42 PM   #14
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Quote:
Originally Posted by Lee in Montreal View Post
I checked the T/S specs on the BC woofer and not much is available. All sites that sell it have the same minimal info. 96db efficiency compared to the JBL's 2242 of 99db.
You can download spec sheets with full TS parameters for all B&C drivers here:

B&C SPEAKERS

Sensitivity specifications are pretty useless for comparing bass drivers, for instance a Lab 12 is only rated at 89.2 one watt one meter, but a pair are over 100 dB in the LabSub horn design.

And sensitivity does not say what will happen at high power- a pair of Lab 12s are more sensitive in my Keystone sub design than the B&C18SW115, but the B&C can go quite a bit louder because it has hardly any thermal compression at double the power the Labs can take.
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Old 5th February 2013, 06:23 PM   #15
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I'm not sure if this is of any help (in metric/cm), 10.5 ft horn simulation for JBL 2242H.
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File Type: jpg ScreenHunter_10 Feb. 05 18.00.jpg (128.8 KB, 125 views)
File Type: jpg ScreenHunter_11 Feb. 05 18.00.jpg (197.0 KB, 121 views)
File Type: jpg ScreenHunter_12 Feb. 05 18.00.jpg (202.1 KB, 103 views)
File Type: jpg ScreenHunter_13 Feb. 05 18.01.jpg (270.0 KB, 14 views)
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Old 5th February 2013, 07:10 PM   #16
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Quote:
Originally Posted by Inductor View Post
I'm not sure if this is of any help (in metric/cm), 10.5 ft horn simulation for JBL 2242H.
So, according to the sim, is the F3/Fb of that monster only 49 Hz?

Last edited by weltersys; 5th February 2013 at 07:13 PM.
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Old 5th February 2013, 07:13 PM   #17
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Thanks for posting the reference JBL ASH6118 Horn-Loaded Subwoofer for the JBL 2242H.
JBL :: Product
http://www.jblpro.com/BackOffice/Pro...ts/ASH6118.pdf
Quote:
Originally Posted by Lee in Montreal View Post
JBL 2242, as used in the ASH-6118WH horn loaded sub is flat to 30Hz with high efficiency.

JBL ASH-6118WH Specifications:
Frequency Response (3 dB):1cabinet: 30 Hz 200 Hz,
Do you see that expressed in the graphics pic of the pdf (or is it me??).
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File Type: jpg ASH6118 Maximum Impact Horn-Loaded Subwoofer.jpg (105.2 KB, 33 views)
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Old 5th February 2013, 07:27 PM   #18
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Quote:
Originally Posted by Inductor View Post
Thanks for posting the reference JBL ASH6118 Horn-Loaded Subwoofer for the JBL 2242H.

Do you see that expressed in the graphics pic of the pdf (or is it me??).
JBL written "Specifications" seldom seem to match the graphs.
Looks like 4 of ASH6118 do a good job getting to 30 Hz, but a single rolls off below 40 Hz.
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Old 5th February 2013, 07:27 PM   #19
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Quote:
Originally Posted by weltersys View Post
So, according to the sim, is the F3/Fb of that monster only 49 Hz?
It's not very "flat" whatever that means , it's only half-infrasound to shake half of the crowd (make it double 2x20Hz=40Hz an octave above).
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Old 5th February 2013, 07:45 PM   #20
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1.5m / 4ft 11 1⁄16in horn simulation for JBL 2242H
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File Type: jpg ScreenHunter_16 Feb. 05 19.38.jpg (127.5 KB, 35 views)
File Type: jpg ScreenHunter_17 Feb. 05 19.38.jpg (214.5 KB, 12 views)
File Type: jpg ScreenHunter_18 Feb. 05 19.39.jpg (120.5 KB, 10 views)
File Type: jpg ScreenHunter_19 Feb. 05 19.39.jpg (37.3 KB, 22 views)
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