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Old 13th February 2002, 09:41 AM   #1
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Default Need Dynaudio driver specs

Hi, I bought an old pair of Dynaudio drivers and have found ambiguos specs online. Does anyone have the printed specs from Madisound, etc?

I have a pair of D28 tweeters and 17W75XL (8ohm)midrange. Have also found the nuance specs but would like to try a diff sort of enclosure and series crossover. any info related to the drivers and nuance speaker design is greatly appreciated.
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Old 13th February 2002, 01:10 PM   #2
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Have you emailled Dynaudio to ask whether they have the info on file? I have found many companies to be very helpful wrt data, but it depends entirely on whether they keep it or not. It's worth a try.

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Old 15th February 2002, 04:56 PM   #3
Fossil is offline Fossil  Singapore
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fishball

slightly more info here :
http://www.speakercity.com/specs/dynaudio_ts.shtml

Spunky
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Old 17th February 2002, 05:45 AM   #4
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Heya Spunk,

Thanks, i've using their specs now to design the enclosure but also found specs on madisound's old dynaudio kit pages which differs slightly. Hence was hoping for a confirmation here. I believe madisound's old print catalogue has the information but alas i lost my copy

I've also emailed dynaudio but am not expecting a reply
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Old 18th February 2002, 10:30 AM   #5
ssc is offline ssc
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I've a pair of D28/2. the spec as given by Dynaudio are as follow :
Qm-0.71,Qe-0.97,Qt-0.41,fs-880,Le-0.065,Zvc-8ohm,Re-5.2ohm.
hope this help.
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Old 18th February 2002, 08:41 PM   #6
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Dear Fishball,

I made a TM from this pair like
http://www.speakerbuilding.com/content/1033/

This works very good, with very low bass and nice mids and highs.
I could send you a scheme of the filter, which is about the same as the dynaudio foccus filter. Making this quite alright is the most difficult, because it has to fit the amplifier (in my case the Audiolab 8000s)

Bye, Hans
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Old 25th February 2002, 02:19 PM   #7
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Ssc,

thanks for the info! A friend scanned both drivers' info from his old madisound catalogue for me recently too!

Hans,

That's a very interesting TL design. Looked almost like a QWTP... nearly got me fooled How do you calculate the angles?

Right now I'm interested in sticking the drivers into a Nuance enclosure http://www.geocities.com/deepfriedsotongball/kits/ but use a series crossover instead of the stock dynaudio one. Crossover point is between 1750-2000, undecided.

A TL design that simple is worth considering too. I avoided TL due to the massive amount of woodwork i see in the Ariel and other diy TLs...
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Old 25th February 2002, 09:45 PM   #8
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Hello Chris,

I think this TL, sometimes called Terminated Line (but I don't think it is; but what's in a name?) is very easy to build. Just keep the dimensions in the drawing.

When I made this box, I first made an 'inner box', and then glued the outside pieces which I were made at the woodshop.

This is really handy, because you can make the box very sturdy this way. Just make holes through the box from one side to the other and then glue a fitting piece of stick in it. Make the stick a little short, otherwise it will maybe harm the 'outer-box'. You can do this with any box of course.

Then I veneered them. They look wonderfull, even my non-audiofile friends get nervous and jealous!!!

If you want more info, mail, bye, Hans
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