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Old 13th July 2013, 01:49 PM   #1
kevinr is offline kevinr  United States
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Default need Rabbitz replacement suggestion for Fostex FE127

Hello;
I am looking for a suitable replacement for the Fostex FE127 which is NLA .
I would like to build the Rabbitz cabinet/design as shown at the DIY Audio project page I found in a link from the Planet 10 website.
The cabinet size ( approx. 8"W X 15" in. high by 10" deep will fit just right into the area I have available for them. around .60 cu. ft.
I could increase the size by both depth or the height by a few inches each way to accommodate a larger driver but so far the FE127 is the one design I've found. I have some quality 3/4" BB left over from before I can use for the cabinets.
It's not my regular listening speakers but will be used mostly for movies and also music 75/25. I only have 2 channel no surround or sub . Basic
I'm a fan of paper cone sound, no crossover,single driver(s) and pretty efficient speaker(s)
Currently I'm using Lou's Amethyst speaker which is smaller and uses the TBW4-1052 FR poly cone with a neo tweeter.It sounds very good although I would like something a little better/bigger and haven't used Fostex before.
I could build the MTM version of the Amethyst but am fishing for suggestions at the forum here.
thanks for any help
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Old 13th July 2013, 02:07 PM   #2
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The FF125wk (Fostex's replacement for the FE127E) would go in, but you'd need to lower Fb to about 52Hz from the current 70Hz if you don't want a +6dB peak at tuning. That should give a gentle EBS style alignment which would be quite effective if near a front wall.

Last edited by Scottmoose; 13th July 2013 at 02:09 PM.
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Old 13th July 2013, 02:44 PM   #3
kevinr is offline kevinr  United States
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Default FF125

okay , thanks Scott. I'll read up some on the FRF125
Actually , the speaker stations are on a sidewall in a smallish room 13'X15'X8' on each side of a wood tv stand that is 24"HX19"DX 36"W.
The room has open doorways and hallways leading to other rooms at one end of the room so it's not closed in .
One speaker is a few inches away from the right side of the TV furniture and the other is in a spot between the left side of the tv stand and a tall wood A/V rack with stereo and turntable power conditioner DAC etc. Both speakers about 10 inches from wall behind them .
The left speaker between the tall AV rack and TV stand would probably have to have different BSC because of the close proximity to 2 boundaries than the other one ?
I'll try and post some pix today and that will help with a visual of the area available for speakers.
One option is to just go with a larger cabinet for The Amethysts which are in .16 cu. ft. cabinets.The WINISD program shows .36 cu. ft. for the TB1052 with TB's posted specs . I'll have to see if I can pull one of the TB drivers and see what I get with DATS for real specs.
I know Lou mentioned he went with an undersized box to get a better controlled bass so going larger cabinet may just introduce another issue
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Old 13th July 2013, 06:40 PM   #4
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The FF125wk is the 1st driver to pop. By my calcs the FF125 needs a smaller box than the FE127 (from 13 litre to 9 litre in my boxes).

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