Horn for Lowther PM2A

Gigas · 25th December 2007, 08:26 AM

Greetings from Sweden, I like to start my membership at this forum with the following questions.

I have decided to build the J-low and I wonder if there is room for my PM2A driver without doing any changes internally?

Secondly, is there any differences between Medallion Mk2 and J-low in sound quality with a PM2A driver, except maybe for bass?

There is a couple of bass horn with modified Audax 15” that I am thinking of using as a support below 100-150Hz.

hm · 26th December 2007, 01:39 PM

Hello,

better take something like that:

smaller, cheaper,

the HORN-SAT with two ALPHORN (pic)
or
the SAXOPHON

Scottmoose · 26th December 2007, 02:19 PM

Quote:

Originally posted by Gigas
Greetings from Sweden, I like to start my membership at this forum with the following questions.

I have decided to build the J-low and I wonder if there is room for my PM2A driver without doing any changes internally?

Secondly, is there any differences between Medallion Mk2 and J-low in sound quality with a PM2A driver, except maybe for bass?

There is a couple of bass horn with modified Audax 15” that I am thinking of using as a support below 100-150Hz.

Greetings & welcome!

As Horst implies above, why build a large bass-horn for the Lowther when you've got the potential to run dedicated unts for the LF? Keep the XO below 200Hz if possible -if you must XO higher, 500Hz is the least evil. I'd be inclined to get them in front-horns though. They wouldn't be overly large as you'd be handing over relatively high up & you'll get symmetrical loading on the front / rear of the driver diaphram.

Gigas · 27th December 2007, 05:48 PM

I do have a couple of horns, old Lowther design in fibreglass enclosed in a wood box filled with 30 kilos of sand. These sit on a metal stand about 30 cm up from floor level, but they look awful and shout at me a little bit.

I was thinking of something nicer not just for the ears but also for the eyes.

What about O.B? I see a lot of happy listeners how have abandoned traditional speaker solutions and rave about their open baffles.

I am a little confused facing all possibilities.

Gigas · 1st January 2008, 08:24 AM

OK hm, what about the Horn-Sat are they hard to build and what is the cost of that?
Do you have drawings for them?

hm · 1st January 2008, 08:41 AM

look here:
http://www.hm-moreart.de/29.htm

happy new year.

25th December 2007, 08:26 AM	#1
Gigas diyAudio Member Join Date: Dec 2007	Horn for Lowther PM2A Greetings from Sweden, I like to start my membership at this forum with the following questions. I have decided to build the J-low and I wonder if there is room for my PM2A driver without doing any changes internally? Secondly, is there any differences between Medallion Mk2 and J-low in sound quality with a PM2A driver, except maybe for bass? There is a couple of bass horn with modified Audax 15” that I am thinking of using as a support below 100-150Hz.

1st January 2008, 08:41 AM	#6
hm diyAudio Member Join Date: Feb 2004 Location: near Hamburg Germany	Gigas look here: http://www.hm-moreart.de/29.htm happy new year. __________________ http://www.hm-moreart.de

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27th December 2007, 05:48 PM	#4
Gigas diyAudio Member Join Date: Dec 2007	I do have a couple of horns, old Lowther design in fibreglass enclosed in a wood box filled with 30 kilos of sand. These sit on a metal stand about 30 cm up from floor level, but they look awful and shout at me a little bit. I was thinking of something nicer not just for the ears but also for the eyes. What about O.B? I see a lot of happy listeners how have abandoned traditional speaker solutions and rave about their open baffles. I am a little confused facing all possibilities.

1st January 2008, 08:24 AM	#5
Gigas diyAudio Member Join Date: Dec 2007	OK hm, what about the Horn-Sat are they hard to build and what is the cost of that? Do you have drawings for them?

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