The 1363SA are a very stout 8" driver. Shawn A had the 1139 in a 4ft open-ended 8"diameter tube, and it liked everything down to about 21Hz before it coughed a little. He used moderate stuffing to about 6" behind the driver, decreasing towards exit. This is typical stuffing of a TL, but other ways may work too. Since you are using a semicircular 8ft long tube of such and such diameter, the cutoff will be lower, and the 1363 is a more robust, and larger driver. I imagine mid 20s will be an appropriate guess, better if corner loaded. In a proper ported design, the 1363 WILL play to about 17.5Hz, and not breach Xmax at max Pe. I think you'd be pleasantly surprised with a 1363 in a half-pipe, let alone a pair of the same. I suggest you lookup Martin E. King's Mathcad spreadsheets about TL designs, as he is the first and foremost (IMO) on this topic. The REAL specs of my 1363SA are:
Vas 11.2226 ltrs
Sens 86.0863dB @ 2.83V
Kxm .113822 H
See what you come up with! I'm interested to hear your impressions if you do this.
Re: for 'DARKKHILD79'...
Thanks you Wolf for this great info! I will plan on doing this very soon now that I have a means to do so. I have a few questions that I will email to you for clarity on a few things. Now I have to just pass this by the "Boss" and see what comes about.
Thank you everyone for all the info as well!
Also I will let everyone know how this turns out.
> Thanks you Wolf for this great info! I will
> plan on doing this very soon now that I have
> a means to do so. I have a few questions
> that I will email to you for clarity on a
> few things. Now I have to just pass this by
> the "Boss" and see what comes
> Thank you everyone for all the info as well!
> Also I will let everyone know how this turns
Yes, keep us posted. I'm interested in your finished design. Glad I could help!
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