Fostex FE126En in an Fonken enclosure? - Page 3 - diyAudio
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Old 22nd February 2012, 11:08 PM   #21
frugal-phile(tm)
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No idea... it may work in a fonken-like box, but unlikely be optimized for any that already exist.

Do you have data measured in LEAP or LMS?

dave
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Old 23rd February 2012, 01:31 AM   #22
Pepe is offline Pepe  Sweden
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No I donīt have any LEAP or LMS and I don know what it is eihter... hahaha.
I have little knowledge regarding speaker building I just enjoy listening to music and the flat 5īs shure do sound sweet but they arenīt givin me any tones below 150 hz in the cabs Iīm using now so they donīt match up well with my sub.
I gues Iīll try some of the closed boxes in the old coral papers, only problem is that they are HUGE, 84 liters for fo 75hz or 40 liters and fo 80 hz !!!!

if any one is interested in the old coral papers I found some scaned by diy-paradise:

coral encl plans | Flickr - Photo Sharing!

and

Coral flat10 plans | Flickr - Photo Sharing!

Thanks for the help!

Best regards
Peter
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Old 4th March 2012, 05:29 PM   #23
Pepe is offline Pepe  Sweden
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Hi Dave.

Found this about the coral flat 5ii's

Coral Flat 5 II 14,5cm*R6,9Ohm*20Watt*SPL91dB*Fres101Hz *Qms8,9*Qes0,83*Qts0,76*Vas3,64*3,1g

I know my drivers are old, but could thees specs be used (they are the ones for new drivers)?

Does the specs change much over time and use?

Peter
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Old 4th March 2012, 06:25 PM   #24
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Peter,

Wow, Vas of 3.64 ft^3!!

With specs like that, you need a BIG box, it simmed nicely in an 1100 liter box (i have a sticky 1 key), an infinite baffle, or a slightly smaller aperiodic box. You'll still only get bass to about 100 Hz.

Most practical use is as a mid-tweeter in an open baffle. This would also cover for the fact that parameters will change as the driver ages.

dave
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Old 4th March 2012, 10:55 PM   #25
Pepe is offline Pepe  Sweden
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Think the vas might be 3.64 liters, not shore though.

Wich makes vas 0.128545387 cubic feet.

Specs are from:

Vintage SpectrumAudio

Since they use metric system in Germany I assume it's in liters.

Peter

Last edited by Pepe; 4th March 2012 at 10:57 PM.
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Old 4th March 2012, 11:52 PM   #26
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Quote:
Originally Posted by Pepe View Post
Think the vas might be 3.64 liters, not shore though.

Which makes vas 0.128545387 cubic feet.
I don't think that's right either. I've got 12.97 liters in my DB, but that could be wrong too. Only way to know for sure is to measure them.

jeff
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Old 5th March 2012, 12:52 AM   #27
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Quote:
Originally Posted by Pepe View Post
Think the vas might be 3.64 liters, not shore though.
After your comment about big box, ft^3 made more sense. <4 liters is small for this size driver.

dave
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Old 5th March 2012, 10:28 AM   #28
Pepe is offline Pepe  Sweden
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My bad, you are probably right Dave.

Don't know how I calculated that????
Should be:
3.64 ft^3 = 103.073322 liters.

Peter
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