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Old 16th July 2006, 05:55 PM   #1
Pepe is offline Pepe  Sweden
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Question small fullrange driver help

Im planing on cunstructing a pair of small fullrange speakers. the enclosure im planing to make out of some ceramic flower pots (seald enclosure or basreflex). and in the future i might stack som new ones on top of them to create line arrays (used with subs). firts i would like to try single ones per side.
the drivers i have in mind: Hi-Vi Research b3s, veravox 3, fostex ff83k, aura NS3-193-8A or some tang bands.
any ideas wich one that will work the best. i will move alot the next 4 mounths so they have to be small, thats why i was thinking of flower pots as enclosures.
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Old 17th July 2006, 03:55 PM   #2
Rudolf is offline Rudolf  Germany
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My experience covers the Veravox 3 and Fostex FF85k. While the Fostex is way more efficient, better xmax and tonal balance are strongly voting for the Veravox 3. There have been published two notch filters for the Veravox which help to straighten out the frequency response even more. 2,5 l CB is what I recommend for the Veravox.

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Old 18th July 2006, 07:17 AM   #3
navin is offline navin  India
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OT: How would one compare the Veravox 3 or Fostex FF85K to something like the Jordan JxR6.
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Old 18th July 2006, 12:33 PM   #4
sreten is offline sreten  United Kingdom
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http://www.zaphaudio.com/smalltest/

http://www.zaphaudio.com/audio-speaker18.html

/sreten.
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Old 26th July 2006, 11:37 AM   #5
Pepe is offline Pepe  Sweden
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thanks for the thred sreten. but it doesnt cover the veravox 3. vich is the most interesting one at the moment.
rudolf do u have any links to where i can get some more information about the 2,5 liter cb and notch for the veravox 3.
thanks
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Old 27th July 2006, 10:57 AM   #6
Rudolf is offline Rudolf  Germany
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Pepe,
this was a project of german magazine "Hobby Hifi" 1/2005 with the Veravox 3:
http://www.saque.de/html/projekt_1.html Its a BR/TML mix actually.

At the bottom of the page is a copy of an article in the other german loudspeaker mag "Klang und Ton" showing some measurements (but NOT of the above project!)

As you can see there are some resonance peaks above 10 kHz. They can be attenuated with a parallel notch filter of 1,0 F/18 Ohm/0,1 mH in series with the Veravox.

The Projekt 1 baffle is 135 mm wide, causing a hump at 1-2 kHz. This can be attenuated with another notch filter of 10 F/4,7 Ohm/0,39 mH in series with the Veravox.

I tried both filters. Immediatly after their installation the box seemed to loose some sparkle and presence, but in the long run it was much less fatuiging.

If you send me your email adress, I can provide you with the complete drawings etc. for that Projekt 1 and simulations for CB and BR.
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Old 28th July 2006, 04:30 AM   #7
navin is offline navin  India
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I dont see the Veravox 3, Fostex FF85K, Jordan JxR6 or even the Fostex FE87. I know many of the drivers mentioned are diffcult to find and atleast the Jordan is expensive to boot. but any link to tests on the capablities of these drivers would be useful.

The Jordan cost 3-4 times the cost of the others.
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