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Old 11th November 2007, 01:56 PM   #1
rho is offline rho  Belgium
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Default Driver for sealed box

I'm looking for a driver to but in a sealed box. Goal is a small 2-way speaker the will be complemented with an active subwoofer. (I'd like to cross below 80Hz)
Tweeter will most probably be the B&G NEO3PDR. Amaing at x-over at 2.5kHz up to 3kHz.
Box volume of about 15liter is the upper limit.
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Old 11th November 2007, 02:10 PM   #2
GOWA is offline GOWA  Canada
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Default Try these

http://www.partsexpress.com/pe/showd...number=295-600

or

http://www.partsexpress.com/pe/showd...number=295-605
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Old 11th November 2007, 02:55 PM   #3
rho is offline rho  Belgium
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Default Re: Try these

Those Dynavox drivers look like some odd Dynaudio drivers.
Besides that, one of the reviewers says that it performs best in a BR enclosure and the other one tells that it lacks detail.

I'll look around for some more info on these anyway.




Edit: The accuton C92-6 looks like a great driver for what I'm intending to do. It's not realy within budget right now, but maybe worth saving for.
Any comments on that driver?
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Old 11th November 2007, 03:42 PM   #4
dre73 is offline dre73  Netherlands
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Click the image to open in full size.

he rho,this seems a nice one

the seas nextel w15ly001
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Old 11th November 2007, 03:56 PM   #5
holdent is offline holdent  Canada
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Zaph documented a design using a GW M130 and Fountek JP3 here http://www.zaphaudio.com/Givler1.html. It used a 2nd-order acoustic slope at 2900 Hz. It's an interesting read because Zaph is not a fan of ribbon or planar drivers (see here http://www.zaphaudio.com/nondomes/)

I am uncomfortable with the Dynavox driver suggestions. Their Qts specs are high for a sealed box that rho specifies and they are lower in sensitivity than I'd like (the NEO3PDR is a high 93.5 db/1w/m). How about a Dayton RS150-4 here: http://www.partsexpress.com/pe/showd...number=295-372 instead?

No matter what you're likely to spend a lot of time on the crossover design and fine tuning. NEO3PDR probably should be crossed over at 3000 Hz or higher and it will be very hard to find a sensitive woofer that can be crossed that high without trading off how deep it will go.
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Old 11th November 2007, 03:59 PM   #6
rho is offline rho  Belgium
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@Dre:

Ook in een gesloten kastje?
In BR doet ie het inderdaad erg goed, maar ik weet niet of ie diep genoeg gaat als je'm gesloten gebruikt.


Also in a sealed box?
In a BR it's a really nice driver, but I'm not sure it will go low enough in a sealed box.
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Old 11th November 2007, 04:13 PM   #7
rho is offline rho  Belgium
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Quote:
Originally posted by holdent
No matter what you're likely to spend a lot of time on the crossover design and fine tuning. NEO3PDR probably should be crossed over at 3000 Hz or higher and it will be very hard to find a sensitive woofer that can be crossed that high without trading off how deep it will go.

You think I'd better go for a 13cm/5" or 15cm/5.5" driver and cross a little higher between tweed and low-mid?

Would it still be possible to get a nice x-over point between sub and low-mid in that case.

It's not that I don't want to spend some money on a good driver. It's that I still have some expenses coming up in the near future.
I have several sets of speakers, so there's absolutely no hurry in this project.
This means that the suggested drivers do not have to be budget drivers. I'd rather wait and save up for a really good driver then hurry and go with a less qualitative one.
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Old 11th November 2007, 07:12 PM   #8
tinitus is offline tinitus  Europe
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http://www.monacor.be/int/en/produkt...pr=EN&typ=full

-3db at 75hz in 15liter closed good Xmax makes it possible to do without highpass filter .... and its a budget bargain
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Old 11th November 2007, 07:42 PM   #9
rho is offline rho  Belgium
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Quote:
Originally posted by tinitus
http://www.monacor.be/int/en/produkt...pr=EN&typ=full

-3db at 75hz in 15liter closed good Xmax makes it possible to do without highpass filter .... and its a budget bargain

Looks nice!!
Any idea where I can find some HD measurements?

The FR curve in the datasheet looks good. X-over at ~3kHz should be possible with this driver.
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Old 11th November 2007, 07:52 PM   #10
tinitus is offline tinitus  Europe
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I have never seen distortion measurements on any budget driver, I really only know of Eton, Beyma and Thiel to offer a full set of measurements
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