What type of enclosure??

e-side · 20th December 2005, 07:36 PM

Hello everyone,

I recently bought some 15" Zeuz PA speakers (type 15 400 HC), and measured the t/s paremeters:

Fs: 33.5 Hz
Qms: 5
Qes: 0.75
Qts: 0.65
Vas: 304 L

The drivers will be used for discoboxes, but I'm not sure what type of enclosure to use (high qes and qts...). Does anyone have a suggestion?

best regards

Erwin

richie00boy · 20th December 2005, 07:45 PM

That's a very high Qts, you will be restricted to sealed boxes, unless you can tolerate an absolutely massive box. You might be able to salvage something using a vented box with QB5 alignment. See the ESP website article.

el`Ol · 24th December 2005, 06:10 AM

Perfect for a TL.

http://www.quarter-wave.com

e-side · 24th December 2005, 11:57 AM

Quote:

Originally posted by el`Ol
[B]Perfect for a TL.

Thats good news!

But I've got one question: Is a TL system less efficient than a sealed system or not?

regards Erwin

el`Ol · 24th December 2005, 01:20 PM

As far as I know it has no influence on the directly radiated higher frequencies.

e-side · 25th December 2005, 06:17 PM

In that case it's worth a try. Everything will be an improvement when listening to these drivers in sealed boxes, because the bass is really bad... No low end at all.

regards Erwin

20th December 2005, 07:36 PM	#1
e-side diyAudio Member Join Date: Jun 2005 Location: The Netherlands	What type of enclosure?? Hello everyone, I recently bought some 15" Zeuz PA speakers (type 15 400 HC), and measured the t/s paremeters: Fs: 33.5 Hz Qms: 5 Qes: 0.75 Qts: 0.65 Vas: 304 L The drivers will be used for discoboxes, but I'm not sure what type of enclosure to use (high qes and qts...). Does anyone have a suggestion? best regards Erwin

20th December 2005, 07:45 PM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	That's a very high Qts, you will be restricted to sealed boxes, unless you can tolerate an absolutely massive box. You might be able to salvage something using a vented box with QB5 alignment. See the ESP website article. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

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24th December 2005, 06:10 AM	#3
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	Perfect for a TL. http://www.quarter-wave.com

24th December 2005, 01:20 PM	#5
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	As far as I know it has no influence on the directly radiated higher frequencies.

25th December 2005, 06:17 PM	#6
e-side diyAudio Member Join Date: Jun 2005 Location: The Netherlands	In that case it's worth a try. Everything will be an improvement when listening to these drivers in sealed boxes, because the bass is really bad... No low end at all. regards Erwin

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