TL Cabinet options

aceinc · 20th May 2007, 09:24 PM

I purchased a group of HiVi A5+ drivers to be used four to a cabinet in a speaker design. My original plan was to build a ported enclosure tuned to ~50 hz yielding an f3 of about 48hz.

I thought I read that TL/TQWT might be able to yield a response 1/2 to 1 octave below the FS of 55hz of these drivers. This would be fantastic if doable. I do not have the Martin King software to properly model these drivers. I do have Akabak, but I can't find a script that could easily be modified for this purpose.

I was hoping that someone with the MK software might take a look at this project and model the drivers and provide some design specs.

My main criteria is to keep the width of the cabinet about 8-1/2" wide and about 40" tall. There will be mids & tweeters above the HiVi A5's that will take up about 8" of baffle space near the top.

The specs on the drivers are;

*Power handling: 35 watts RMS/70 watts max *VCdia: 3/4" *Znom: 8 ohms *Re: 6.5 ohms *Frequency range: 55-6,500 *Fs: 55 Hz *SPL: 86dB 1W/1m *Vas: .22 cu. ft. *Qms: 5.91 *Qes: .47 *Qts: .44 *Xmax: 3 mm *Dimensions: A: 5-1/8", B: 4-1/4", C: 3-3/4".

The SD is about 15.9"^2 per driver, or about 60.36"^2 total for all four drivers.

Any help that you can offer is greatly appreciated.

Paul

Bjohannesen · 21st May 2007, 11:38 AM

Hi Paul, why not get hold of Martin J. King´s excelent software and take it from there.
Bjon

aceinc · 21st May 2007, 01:01 PM

Cheap & lazy, I guess

I may do that if no kind soul offers to help.

Actually, I tought it would be faster is someone that knew how to use the tool would create the model, than me trying to figure out how to use it.

Paul

Bjohannesen · 22nd May 2007, 10:50 AM

Hi Paul, I did not mean to be ignorant.

When you have installet the MathCad models, I would be happy to help you. Martin´s software is not difficult to work with. You will not find the userinterface sexy, but it is not as "technical" as is might look.

Hi from Bjorn

aceinc · 22nd May 2007, 01:18 PM

I wasn't offended, just trying to be ironic/humorous.

I may have to pony up the $25.00 for the MJK scripts, since no one seems to be offereing to do my design work for free.

Do you know if Akabak, can faithfully model a TL/TQWT similar to what I am trying to build? It seems like a fairly flexible tool.

Paul

20th May 2007, 09:24 PM	#1
aceinc diyAudio Member Join Date: May 2007	TL Cabinet options I purchased a group of HiVi A5+ drivers to be used four to a cabinet in a speaker design. My original plan was to build a ported enclosure tuned to ~50 hz yielding an f3 of about 48hz. I thought I read that TL/TQWT might be able to yield a response 1/2 to 1 octave below the FS of 55hz of these drivers. This would be fantastic if doable. I do not have the Martin King software to properly model these drivers. I do have Akabak, but I can't find a script that could easily be modified for this purpose. I was hoping that someone with the MK software might take a look at this project and model the drivers and provide some design specs. My main criteria is to keep the width of the cabinet about 8-1/2" wide and about 40" tall. There will be mids & tweeters above the HiVi A5's that will take up about 8" of baffle space near the top. The specs on the drivers are; Power handling: 35 watts RMS/70 watts max VCdia: 3/4" Znom: 8 ohms Re: 6.5 ohms Frequency range: 55-6,500 Fs: 55 Hz SPL: 86dB 1W/1m Vas: .22 cu. ft. Qms: 5.91 Qes: .47 Qts: .44 Xmax: 3 mm *Dimensions: A: 5-1/8", B: 4-1/4", C: 3-3/4". The SD is about 15.9"^2 per driver, or about 60.36"^2 total for all four drivers. Any help that you can offer is greatly appreciated. Paul

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21st May 2007, 11:38 AM	#2
Bjohannesen diyAudio Member Join Date: Jan 2005 Location: Copenhagen	Hi Paul, why not get hold of Martin J. King´s excelent software and take it from there. Bjon

21st May 2007, 01:01 PM	#3
aceinc diyAudio Member Join Date: May 2007	Cheap & lazy, I guess I may do that if no kind soul offers to help. Actually, I tought it would be faster is someone that knew how to use the tool would create the model, than me trying to figure out how to use it. Paul

22nd May 2007, 10:50 AM	#4
Bjohannesen diyAudio Member Join Date: Jan 2005 Location: Copenhagen	Hi Paul, I did not mean to be ignorant. When you have installet the MathCad models, I would be happy to help you. Martin´s software is not difficult to work with. You will not find the userinterface sexy, but it is not as "technical" as is might look. Hi from Bjorn

22nd May 2007, 01:18 PM	#5
aceinc diyAudio Member Join Date: May 2007	I wasn't offended, just trying to be ironic/humorous. I may have to pony up the $25.00 for the MJK scripts, since no one seems to be offereing to do my design work for free. Do you know if Akabak, can faithfully model a TL/TQWT similar to what I am trying to build? It seems like a fairly flexible tool. Paul

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