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Old 20th July 2013, 05:00 PM   #11
tb46 is offline tb46  United States
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Hi Soldermizer,

In Post #244 of this thread: Build your own 2x12" TH (The Kraken 212 TH) bjorno shows what can be expected from a good tapped horn design (using the JBL GTO1214).

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Old 20th July 2013, 05:03 PM   #12
GM is offline GM  United States
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Ah! A typo, didn't consider that........duh! Thanks guys.

GM
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Old 20th July 2013, 05:07 PM   #13
tb46 is offline tb46  United States
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Hi,

Yes, fumble fingers me again. :-) Sorry.

Here is another link that may be of interest, jbell's comparison of TH and acoustic wave cannon, Post #322: Acoustic wave canon

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Old 20th July 2013, 09:04 PM   #14
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The Ijit (me) has just bought the following driver off Ebay for about $83:

Peerless XXLS Sub 830845

http://www.tymphany.com/files/XXLS-P830845%20Rev1_0.pdf

It seems to have a similar pedigree to new woofs, and about 1/3 or 1/4 the price delivered

I think building a TQWL or tapered horn is too complex for me. I am going to do the Sonotube thing ... first the 1/4 wave El-Pipe-O type, and maybe later add the shorter piece to make a clone of BWC.
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Old 20th July 2013, 09:51 PM   #15
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As an attorney for Bose Corporation, I am telling you to cease and desist...and please send a check for $1,000,000,000 damages to:
Old Pink
The Funny Farm
Chalfont, UK

Just kidding, I'm curious how this works out!
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Old 20th July 2013, 10:32 PM   #16
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Quote:
Originally Posted by Soldermizer View Post
I think building a TQWL or tapered horn is too complex for me. I am going to do the Sonotube thing ... first the 1/4 wave El-Pipe-O type, and maybe later add the shorter piece to make a clone of BWC.
A TH can be as simple to build as a bass reflex box.

Having built boxes of all types from plywood, I find that simple TH are far easier to construct and finish than cabinets made of Sonotube.
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Old 21st July 2013, 01:37 AM   #17
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Ha! I would sooner build a wood chimney and hearth.

I.can go far with tubes and duct tape. It will look *** but can hide behind a big sofa. :*)

Latest idea is why cant I try flexible duct or tubing ... for a twist as you like transmission line? How much If any flexing is allowed? Here is a firm that sells possible pipes:

Industrial Hose Manufacturer Hoses & Ducting Flexaust Inc.

Last edited by Soldermizer; 21st July 2013 at 01:42 AM.
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Old 21st July 2013, 01:55 AM   #18
GM is offline GM  United States
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Well, me and some others have had some success using rubber flex duct to pipe trunk mounted BP sub output into the car's cabin, but they don't come in really large sizes AFAIK.

The large Flexaust looks promising, though only one way to know for sure. Note that due to friction losses that a sim won't be accurate, so you'll probably need a larger and/or longer one than predicted plus may need some stuffing in it also. Surprisingly, I didn't need any for the 6"? I used back in the late '90s, only a piece of thick old speaker grill-cloth stretched over the end to 'critically' damp it.

GM
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Old 21st July 2013, 03:04 AM   #19
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I used ADS ducting in TL installations around 30 years ago. It worked, but after 1999 anything done before was wrong and dumb, including the Bass BBgun. Do what you will, the driver chosen will work in better applications. Yes I am one of those who consider Bose a marketing triumph, not an audio trailblazer. Who copied the Bass Cannon? Reminds me of Peggy Lee asking, is that all there is?
ADS is available as large as 12"

Last edited by phivates; 21st July 2013 at 03:06 AM. Reason: Size
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Old 22nd July 2013, 03:21 AM   #20
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Sounds great, go for it!!!

Bose Wave Cannon - Clone - YouTube
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