JBL 2152H

kingfisher · 20th August 2011, 04:05 AM

Okay, just bought these here on the swapmeet, haven't even been sent as MO was only mailed today! However, I need a design for these (JBL 2152H) pr! Ported, closed, T-Line horn ...ect? Any ideas, shapes ...Plans?
Much appreciated,
Kingfisher

AstroSonic · 20th August 2011, 06:28 PM

With a seneitivity of 101 db/w/m, this is a great driver for use with low power tube amps. With a pmax of 150w, it could also be used with higher powered amplifiers, although the resulting spls could be harmful.

A potential downside is the Fs of 85 hz - it will not produce usable deep bass. EQ could be used but the Xmax of 2.5 mm would limit eq'ed bass to pretty low levels. OTOH, this driver was never designed for deep bass capability. It was designed for use with an amplified sub.

It could be used on OB or in a small closed box in an HT system set for 'small' speakers, then used with a sub.

For use with a passive crossover to a 'woofer' a fairly heroic effort will be required.

Note that this is a bit off target for this forum (full range drivers, admittedly often 'assisted'). Consider posting on the Lansing Heritage site, where the JBL experts hang out.

Good luck,

Bob

bjorno · 22nd August 2011, 11:26 AM

Quote:

Originally Posted by kingfisher

.. T-Line horn ...ect? Any ideas, shapes ...Plans?
..

Hi Kungfiskaren(SWE),

Here is another idea: Use your JBL 2152H as (T-TQWT:s) Stands(~60 cm or 23.6” total height if using 18mm Ply) for a couple of good FR drivers on top.

XO the T-TQWT-Stand max. at ~250 Hz if the terminus/opening is placed as close as possible to the top FR driver.

b

kingfisher · 22nd August 2011, 12:51 PM

Hello bjorno, I like the idea of a T-Line. Can you give more details? I am not familiar with what this means (T-TQWT:s) and (FR driver)?
Thanks

bjorno · 22nd August 2011, 02:45 PM

Hi,

FR = Full-Range (driver), Then do a search for T-TQWT pictures at Google or search my contributions here at DIYaudio..

Example:

Building a nice Subwoofer - questions.

b

20th August 2011, 04:05 AM	#1
kingfisher diyAudio Member Join Date: Feb 2010 Location: Eastern Ontario CA.	JBL 2152H Okay, just bought these here on the swapmeet, haven't even been sent as MO was only mailed today! However, I need a design for these (JBL 2152H) pr! Ported, closed, T-Line horn ...ect? Any ideas, shapes ...Plans? Much appreciated, Kingfisher

22nd August 2011, 12:51 PM	#4
kingfisher diyAudio Member Join Date: Feb 2010 Location: Eastern Ontario CA.	JBL speaker box idea Hello bjorno, I like the idea of a T-Line. Can you give more details? I am not familiar with what this means (T-TQWT:s) and (FR driver)? Thanks

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20th August 2011, 06:28 PM	#2
AstroSonic diyAudio Member Join Date: Jun 2004 Location: central Pennsylvania, USA	With a seneitivity of 101 db/w/m, this is a great driver for use with low power tube amps. With a pmax of 150w, it could also be used with higher powered amplifiers, although the resulting spls could be harmful. A potential downside is the Fs of 85 hz - it will not produce usable deep bass. EQ could be used but the Xmax of 2.5 mm would limit eq'ed bass to pretty low levels. OTOH, this driver was never designed for deep bass capability. It was designed for use with an amplified sub. It could be used on OB or in a small closed box in an HT system set for 'small' speakers, then used with a sub. For use with a passive crossover to a 'woofer' a fairly heroic effort will be required. Note that this is a bit off target for this forum (full range drivers, admittedly often 'assisted'). Consider posting on the Lansing Heritage site, where the JBL experts hang out. Good luck, Bob

22nd August 2011, 02:45 PM	#5
bjorno diyAudio Member Join Date: Mar 2005 Location: Jacobsmountain	Hi, FR = Full-Range (driver), Then do a search for T-TQWT pictures at Google or search my contributions here at DIYaudio.. Example: Building a nice Subwoofer - questions. b

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