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Old 17th October 2008, 09:37 AM   #1
Gluca is offline Gluca  Italy
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Default What cabinet for lowther A45?

I may buy a cheap used pair but I don't know what cabinet to build. OK, I don't like back horns.

Point me somewhere, I am quite lost when speaking of speakers.

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Old 17th October 2008, 12:29 PM   #2
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Default Re: What cabinet for lowther A45?

Quote:
Originally posted by Gluca
OK, I don't like back horns.
They're designed for back loaded horns.

If you must put them in something else, a simple MLTL should do the job OK in a small space & moderate volumes.

34in line
CSA = 43.5in^2
Zdriver 12.5in
Zvent 32in
Vent 2in diameter x 2in long. Stuff 0.45lbs ft^3 top 20in or line top, back & one side-wall.
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File Type: gif a45 mltl.gif (5.8 KB, 232 views)
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Old 17th October 2008, 02:03 PM   #3
Gluca is offline Gluca  Italy
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Hey Scott

thanks. Would you mind give me a link to some tech documentation explaining in deeper details your simulation? I am quite an absolute beginner with speakers.

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Gianluca
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Old 17th October 2008, 02:08 PM   #4
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When you say technical information, what exactly is it you need?
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Old 17th October 2008, 04:28 PM   #5
Gluca is offline Gluca  Italy
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Well... basically I never built a MLTL and I know little theory so I need to translate those numbers in dimensions to cut the wood and assembly the cabinet.




Thanks for the tips.
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Old 17th October 2008, 07:09 PM   #6
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Default Other options

Hi Gianluco

One customer loves them in Terry Cains BIB boxes.

Open baffle works.

Others like them in a .5 cubic foot boxe, with a woofer below 150 hz.

These typically have a rising high end that can be tamed by listening off axis or adding a 1mh coil with a 10 to 15 ohm resistor. Place the resistor and coil parallel with each other, and that combination in between + amp and + of Lowther.
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Old 17th October 2008, 07:19 PM   #7
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Internal dimensions 34in tall. Whatever WxD dimensions you prefer which give the stated 43.5in^2 cross sectional area of the line (for e.g. 7.25in x 6in)

Driver-centre 12.5in down from the internal top. Vent centre 32in down from the internal top.
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Old 17th October 2008, 07:46 PM   #8
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Default Re: Other options

Quote:
Originally posted by Jon Ver Halen

These typically have a rising high end that can be tamed by listening off axis or adding a 1mh coil with a 10 to 15 ohm resistor. Place the resistor and coil parallel with each other, and that combination in between + amp and + of Lowther.
HERESEY! A least you did not recommend a SS amp.
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Old 17th October 2008, 08:47 PM   #9
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Did someone say SS with Lowthers?

First Watt at RMAF

I really enjoyed it. So did a large number of people who swore by tubes until then.

Quote:
HERESEY!
Well, you don't make progress by sticking you head in the sand. So a little Heresey is good once in a while. Just as long as you don't get carried away and try to put a Lowther in something with a vent. (hey, I can have my fun too!)
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Old 17th October 2008, 09:05 PM   #10
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