Alternate Driver for Jordan JX92S TL Cabinet - diyAudio
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Old 31st October 2006, 05:22 AM   #1
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Default Alternate Driver for Jordan JX92S TL Cabinet

I am wondering if anyone knows an alternate lower cost driver that would work well in the TL cabinet design that Neil kaye did such a nice job of building as detailed in the gallery pages and his web site.

http://web.mac.com/noteldov/iWeb/DIY...7951E0B11.html

I want to build a cabinet design that will fit hidden inside a wall with the driver area only stepped out 1/2" to be flush with the finished gypsum wall. This TL design looks like it would fit nicely in the wall. I would have to adjust the vent opening out the front as well.
The idea is to create what looks like a simple inwall speaker but in fact have the benefit of a TL design.
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Old 31st October 2006, 11:53 AM   #2
sreten is offline sreten  United Kingdom
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Hi,

Your best best is a design for your chosen driver, not the other way round.
The jordan has very unusual specifications making it hard to match.

Many designs can be modified to fit into a wall.

/sreten.
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Old 31st October 2006, 02:43 PM   #3
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Default driver selection

The proposed driver is a FR125S. The shallowest cabinet design is what I am looking for . Sealed cabinet would be simplest to install if anyone knows of a design that has been proven.
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Old 31st October 2006, 05:28 PM   #4
sreten is offline sreten  United Kingdom
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Hi,

Any design can be used, just keep the cross sectional area the same,
or half it in the case of bipoles.

http://www.planet10-hifi.com/boxes-CSS.html

/sreten.
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Old 31st October 2006, 06:25 PM   #5
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Default Re: driver selection

Quote:
Originally posted by Inniswhe
The proposed driver is a FR125S. The shallowest cabinet design is what I am looking for . Sealed cabinet would be simplest to install if anyone knows of a design that has been proven.
Both the FR125 & the Fostex FE127 work in a simple ML-TL. You should easily be able to accomodate one into the walls -- i've actually done just that with a set of diyAudio Ref FE127e ML-TLs (port exiting closer to the ceiling so the kids won't fill the port with ...

http://www.diyaudio.com/forums/showt...564#post528564

These could be cut in half (lengthways) and used for the FR125. FR125 also works well in sealed (10-14 litres)

http://p10hifi.net/tlinespeakers/FAL...e-MLTL-map.gif

dave
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Old 31st October 2006, 08:25 PM   #6
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Default CSS FR125S ML-TL Modelling

In my work in designing, analyzing, and building a FR125S/WR125S bipolar ML-TL I do have a single driver ML-TL to describe. All dimensions are internal values:

Line length: 39.56"

Driver centered 14" from top

Port Located 37" from top

Cross-sectional area: 21.75 sq. in.

Stuffing density: 0.50 lb.-ft3

Port diameter: 2.125"

Port length: 3" (50 Hz F3) to 4" (45 Hz F3)

You can vary the port tube between 3" to 4" long depending on how low you wish to go for the 3 dB down point.

This design models very flat and will sound great.

Jim
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Old 31st October 2006, 08:36 PM   #7
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Dave, how about that WB 127 based folded quadratic taper design you did a little while ago? Should be ideal.
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Old 31st October 2006, 10:11 PM   #8
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Quote:
Originally posted by Scottmoose
Dave, how about that WB 127 based folded quadratic taper design you did a little while ago? Should be ideal.
Yes, there are numbers for a Metronome for the FE127. As well i've drawn a Tombstone/PAWO format ML-Voigt for the FE127.

dave
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File Type: gif tombstone-fe127-mlv-alpha.gif (26.5 KB, 521 views)
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Old 1st November 2006, 10:07 AM   #9
sreten is offline sreten  United Kingdom
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Default Re: driver selection

Quote:
Originally posted by Inniswhe
The proposed driver is a FR125S.
Hi,

Personally I'd go for the WR125S + supertweeter.

/sreten.
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Old 1st November 2006, 11:18 AM   #10
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Port length by memory for the WB design above needs to be between 1in & 2in depending on taste, & using the FE127E. The CSS drivers should go in if you increase vent length to 3in.
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