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Old 17th August 2010, 09:18 PM   #1
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Default fostex FE168EZ

Hi guys

Has anyone here tried the fostex FE168EZ driver in an infinite baffle enclosure? I plan the size of the box to be 15 litres. Any help and or guidance will be appreciated.

Thanx
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Old 18th August 2010, 07:36 AM   #2
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I ran that driver through Winisd Pro and it says a 15 L infinit baffel will give you a
QTC of .436 and be down 3db at about 170hz. In other words you will have no
power handeling to speak of and no bass.
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Old 18th August 2010, 02:30 PM   #3
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Default FE168EZ Fostex

Hi Woody

Thank you for your reply.

I have two beautiful 15 litre boxes with cheap skytronic 6.5 inch full rangers in it operating without a baffle step correction circuit about 20 cm from the rear wall. Now this was a surprise to me experiencing my first full range sound.

Keeping the placement of the boxes and no baffle step correction in mind, how about this fostex driver FF165K in it? Or can you perhaps recommend me another driver of Fostex that might work in the 15 litre boxes.

Thanx
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Old 18th August 2010, 04:48 PM   #4
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>>> In other words you will have no power handeling to speak of and no bass.

LOL. Yes, that's a small box for any of the 6.5" Fostex you are considering. I put a pair of older style 168s into a 15l box and there was no bass and it had a very thin sound overall.

Check the hole sizes and maybe you can put something like this into those boxes:

Vifa A16CG-21-04 6-1/2" Coaxial Speaker w/Audax Tweeter | Parts-Express.com

Just a suggestion. I don't think you will have good results with Fostex 6.5 inchers, sorry.

Godzilla
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Old 18th August 2010, 05:00 PM   #5
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by Godzilla View Post
>>> In other words you will have no power handeling to speak of and no bass.

LOL. Yes, that's a small box for any of the 6.5" Fostex you are considering. I put a pair of older style 168s into a 15l box and there was no bass and it had a very thin sound overall.

Check the hole sizes and maybe you can put something like this into those boxes:

Vifa A16CG-21-04 6-1/2" Coaxial Speaker w/Audax Tweeter | Parts-Express.com

Just a suggestion. I don't think you will have good results with Fostex 6.5 inchers, sorry.

Godzilla
agreed - at least none of the current production models

discontinue FE127E works very well in slightly less than this volume with resistive slot ports (it's a fonken miracle ) or maybe even 167E (the latter would likely have preternaturally high but very smuv bass rolloff)
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Old 18th August 2010, 05:49 PM   #6
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Those things said, I have a nice pair in sealed boxes, and
they are some of the best midrange drivers I have heard.

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Old 18th August 2010, 06:29 PM   #7
chrisb is offline chrisb  Canada
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Those things said, I have a nice pair in sealed boxes, and
they are some of the best midrange drivers I have heard.


no doubt there, but with some low frequency assistance, as well as appropriate amplication, I'd imagine
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Old 18th August 2010, 07:58 PM   #8
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And something to sweeten the top.

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Old 18th August 2010, 08:13 PM   #9
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Default 6.5" full range fostex

Thank you guys!

Verdict, 15 L infinite + fostex 6.5" = no,no for a decent frequency responce especially the lows

Lets take the same box and put a port in it, might this work? If so what should be the size and length of the port?

Please note that I would not like to use a subwoofer or a baffle step correction circuit.

Thanks again
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Old 18th August 2010, 08:51 PM   #10
chrisb is offline chrisb  Canada
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And something to sweeten the top.


OK, which of the First Watt amps would you most highly recommend (for those of us still enamored of low powered hollow state devices )
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