Any Fostex FE167En smallish Cabinet recommendations? - diyAudio
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Old 30th May 2012, 09:22 AM   #1
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Default Any Fostex FE167En smallish Cabinet recommendations?

Mornin' All,

Bit of a tricky one this. I've bought a couple of FE167En's for use in my day-job workshop (I'm an Electronics Tech by trade) to replace the now deceased JBL Control 1's that have provided sterling service for many years but due to the dry-ish atmosphere in the 'shop their foams have all disintegrated and now need replacing. Whatevers! One day when the wind is in the right direction etc etc etc.

What I now want to do is build a pair of smallish FR Cabinets for the FE167En's. There's a few proviso's though..... The HAVE to be mounted hanging from a small cable gantry (!) at the far end of the workshop. Floor or shelf space is at an absolute premium and also there's great chance they'd get damaged as we've got pieces of kit to be repaired coming and going in and out of the 'shop allday everyday so 'up and out out of harms way' it HAS to be.

They'll be driven by a fairly muscular EL34 PP amp which is fed from a PC running FLAC files in Foobar FWIW. We've already got a pair of DIY (built when i was still at school... I'm now 46!) 2 way BR cab's that need to come down off the gantry as they too have foam disintegration probs. They've been up there at least 6 years and have done well also (we had 2 systems... long story!).

The only cabinets I've seen that really fit the bill so far are Fostex's own 'recommended' design. Anyone know of anything else worthy of consideration?

ta's.

DTB.
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Old 30th May 2012, 04:50 PM   #2
chrisb is offline chrisb  Canada
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how "small" exactly?

a few years ago "we" built a pair of burn-in / test drive boxes for the 167, based on the approx volume and tuning of the Fostex simple BR box (added extra bracing / slot port) - they worked well enough ( but a decent floorstander, such as say, the Fonken, will eat them for breakfast) - I can see however that they'd be suitable for your mounting scheme - maybe Davie still has the drawings somewhere
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Old 30th May 2012, 05:09 PM   #3
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Current 2 way BR hanging (screwed via a batten piece!) from the cable tray measure 20" by 15" by 13" deep might be able to go a smidge bigger but not too much Chris.

If drawings are available I'd be interested *does cute dog beggy paw thing* :-)

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Old 30th May 2012, 05:47 PM   #4
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IRRC the Fostex recommended box was 15L. This was optimized for HT. I built a straight BR 25L that worked quite well for polite music. I don't think that the FE167E had the guts for the heavier stuff without seriously over-driving it. Still, no slam.

Bob
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Old 30th May 2012, 05:55 PM   #5
kevinkr is offline kevinkr  United States
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I had a pair of the FE167E and was not overly thrilled with them.. Have to say that their limited power handling might be a problem in a large room, particularly if you are trying to get (any) bass out of them. I'll second the "no slam" comment Bob made as well. Have heard 3 different systems with these drivers including my own, not my cup of tea.

Personally I'd refoam the BR or the JBLs and put them back in service. Other options might include replacing the woofers with ones having close TS parameters to the originals.
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Old 30th May 2012, 06:03 PM   #6
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The break-in boxes Chris mentioned were 15litre with a 2"d x 2.5" port. Up to 25-26 litre for max bass extension.

Your 2-way is 47 litre gross (assuming 3/4" material) so new (big) boxes would be smaller.

Dave, figure out what shapes are best for you, or which dimensions you'd like to use up, and i'll sketch a Fonken167dtb for you.

dave
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Old 30th May 2012, 06:52 PM   #7
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I have FE167eN's in old 48L Sansui boxes, and bass is NOT an issue. If you want bass from these drivers, why go smaller if space isn't an issue?

A 15L BR box for these drivers would be another Fostex "cruel joke" IMHO.

jeff

Last edited by vinylkid58; 30th May 2012 at 06:56 PM. Reason: add text
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Old 30th May 2012, 06:54 PM   #8
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by planet10 View Post
The break-in boxes Chris mentioned were 15litre with a 2"d x 2.5" port. Up to 25-26 litre for max bass extension.

Your 2-way is 47 litre gross (assuming 3/4" material) so new (big) boxes would be smaller.

Dave, figure out what shapes are best for you, or which dimensions you'd like to use up, and i'll sketch a Fonken167dtb for you.

dave

too many boxes, so many years - I thought we used slot ports on these boxes

I would probably have to concur that even in an "optimal" box, the 167s might not deliver suitable "slam" for someone with the moniker D "The Bass"

now, FE166E in double mouth horn or even BIB - perhaps

but replacing surrounds on the JBLs might still be your best bet
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Old 30th May 2012, 07:03 PM   #9
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Quote:
Originally Posted by vinylkid58 View Post
A 15L BR box for these drivers would be another Fostex "cruel joke" IMHO.
It actually was pretty decent (ask Stew's brother), this is one Fostex Factory box that passes muster (their vent was 2" long) The bigger box get much more out of them thou.

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Old 30th May 2012, 07:39 PM   #10
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Idono Dave, the sim looks pretty bad.

Ok, I take that back. With the Fostex published ts values, it looks fine.


jeff

Last edited by vinylkid58; 30th May 2012 at 07:45 PM. Reason: add text
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