Help me sim an (unusual) MLTL for Faital Pro 8HX200 - AVS Forum

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NiToNi's Avatar NiToNi
10:24 AM Liked: 10
post #1 of 6
05-15-2013 | Posts: 457
Joined: Jul 2001
I am a complete newbie when it comes to horns, pipes and TL-type of speakers and having downloaded and looked at both Hornresp and MKJ's MathCad worksheets, I'm convinced I am destined to remain one...

I would like some kind and generous help from someone smarter than I am to simulate either an ML TL enclosure (or indeed a TQWT if better suited to my requirements) for the Faital Pro 8HX200 coaxial driver.

http://www.no-frills-audio.se/wp-content/uploads/2012/09/FaitalPro-8HX200.pdf

I will use four of these as surrounds in my HT system. They need to play down to 70-80 Hz so I had imagined the "port" to be tuned to the Fs of 76 Hz. I will be using digital active xover & EQ.

The "unusual" aspect relates to my strict requirements on the dimensions of the MLTL enclosures. These will be mounted directly against the sidewalls, like columns streching from floor to ceiling. I would like the internal depth to be no more than that of the driver itself (i.e. the compression driver almost touching the backwall), so let's say maximum 4.5 inches. Similarly, I would like the internal width of the enclosure to be not much more than than the width of the driver itself, say maximum 7.5 inches.

That leaves the height as the only dimension to play around with, up to say a maximum of 70 inches.

Is this at all doable...????
Bill Fitzmaurice's Avatar Bill Fitzmaurice
11:53 AM Liked: 1770
post #2 of 6
05-15-2013 | Posts: 10,506
Joined: Nov 2009
TLs work best with high Qts drivers, 0.5 or more. At 0.3 this driver is not a good TL candidate and would work best in a ported reflex.
NiToNi's Avatar NiToNi
02:52 AM Liked: 10
post #3 of 6
05-17-2013 | Posts: 457
Joined: Jul 2001
Thanks, Bill.

I thought a Qts of between 0.30 and 0.40 worked alright for MLTL and even lower Qts in a TQWT...?
Bill Fitzmaurice's Avatar Bill Fitzmaurice
06:23 AM Liked: 1770
post #4 of 6
05-17-2013 | Posts: 10,506
Joined: Nov 2009
Quote:
Originally Posted by NiToNi View Post

Thanks, Bill.

I thought a Qts of between 0.30 and 0.40 worked alright for MLTL and even lower Qts in a TQWT...?
TLs work best with drivers that also work well in sealed alignments.
NiToNi's Avatar NiToNi
12:35 PM Liked: 10
post #5 of 6
05-22-2013 | Posts: 457
Joined: Jul 2001
OK, thanks again.

What about a TQWT then...?
Bill Fitzmaurice's Avatar Bill Fitzmaurice
03:14 PM Liked: 1770
post #6 of 6
05-22-2013 | Posts: 10,506
Joined: Nov 2009
Quote:
Originally Posted by NiToNi View Post

OK, thanks again.

What about a TQWT then...?
If you're going to use that driver I'd put it in a vented box.
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