3 way transmission line enclosure

SamClassA · 4th June 2011, 06:53 PM

Can someone please have a look at this sketch to see if my transmission line length is close enough to be ok? I will be using a 10" bass speaker (peerless xls)

picowallspeaker · 4th June 2011, 07:15 PM

(maybe I'm wrong ) I recall in reading that the XLs is optimized for sealed box loading ,as the excursion would not be guaranteed (to make it last ) with max power .

SamClassA · 4th June 2011, 07:31 PM

thanks for replying, if that is the case, can someone suggest a 10" bass speaker that would be suitable.

RockLeeEV · 10:55 PM

What exactly are you using to model this transmission line? I suggest using either Augspurger's TLwrx or MJK's worksheets (Classic TL mode) to see exactly which drivers will produce optimal performance.

SamClassA · 5th June 2011, 08:23 AM

In my rough (very) sketch above I measured a wave length of approx 1.5 meters long.
By using a formula I calculated the wavelength to be 1,5 meters (for a 1/8th wave length) and 3 meters for a (1/4 wave length) This is for a speaker having a Fs of 20 Hz. Should I be going for the 1/4 wavelength ?? Any comments?

bjorno · 5th June 2011, 08:48 AM

Quote:

Originally Posted by SamClassA

Can someone please have a look at this sketch to see if my transmission line length is close enough to be ok? I will be using a 10" bass speaker (peerless xls)

Hi,

More information is needed: HR and/or MJK:s programs can be used to find out a suitable driver and to estimate the possible performance.

Is this a quarter or half-wave design,in the picture there is no termination seen, i.e a drawn terminus?

b

jerome69 · 5th June 2011, 12:16 PM

I've already seen closed quarter wave.
PKitt has already done the calculation for a 10" SLS and a 10" SB

10 woofer for transmission line?

toprepairman · 5th June 2011, 12:24 PM

Go for a sealed enclosure and use two of the XLS's per box.

SamClassA · 5th June 2011, 12:32 PM

Hi bjorno, her, sorry forgot it initially.e is a skjetych of the termius -port

SamClassA · 5th June 2011, 12:33 PM

Thanx jerome69, good reading....

4th June 2011, 10:52 PM	#4
RockLeeEV diyAudio Member Join Date: Sep 2010	What exactly are you using to model this transmission line? I suggest using either Augspurger's TLwrx or MJK's worksheets (Classic TL mode) to see exactly which drivers will produce optimal performance. Last edited by RockLeeEV; 4th June 2011 at 10:55 PM.

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4th June 2011, 07:15 PM	#2
picowallspeaker diyAudio Member Join Date: Apr 2007	(maybe I'm wrong ) I recall in reading that the XLs is optimized for sealed box loading ,as the excursion would not be guaranteed (to make it last ) with max power .

4th June 2011, 07:31 PM	#3
SamClassA diyAudio Member Join Date: Jul 2006	thanks for replying, if that is the case, can someone suggest a 10" bass speaker that would be suitable.

5th June 2011, 08:23 AM	#5
SamClassA diyAudio Member Join Date: Jul 2006	In my rough (very) sketch above I measured a wave length of approx 1.5 meters long. By using a formula I calculated the wavelength to be 1,5 meters (for a 1/8th wave length) and 3 meters for a (1/4 wave length) This is for a speaker having a Fs of 20 Hz. Should I be going for the 1/4 wavelength ?? Any comments?

5th June 2011, 12:16 PM	#7
jerome69 diyAudio Member Join Date: Feb 2008 Location: Lyon	I've already seen closed quarter wave. PKitt has already done the calculation for a 10" SLS and a 10" SB 10 woofer for transmission line?

5th June 2011, 12:24 PM	#8
toprepairman diyAudio Member Join Date: Nov 2010	Go for a sealed enclosure and use two of the XLS's per box.

5th June 2011, 12:33 PM	#10
SamClassA diyAudio Member Join Date: Jul 2006	Thanx jerome69, good reading....

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