My Frugel-Horn Build - Page 11

loninappleton · 10th March 2009, 02:31 AM

That post just above shows a very good example of the flare technique.

http://www.madaboutsound.com/prod_de...4&sa=cf&ctid=6

italynstylion · 10th March 2009, 02:55 AM

Quote:

Originally posted by loninappleton
That post just above shows a very good example of the flare technique.

http://www.madaboutsound.com/prod_de...4&sa=cf&ctid=6

I noticed that too when I clicked on it earlier today. That really helps out a lot. I bought a rasp for doing that but I'm not sure it is the correct tool for the application....let me explain

My situation is a bit unique since I've already attached the baffles. There just simply isn't enough room in the compression chamber to use the rasp at its fullest. If I used VERY short strokes with the rasp it would work but would probably drive me insane.

I ended up buying a little dremel bit that looks like it will get the job done. I'll be able to maneuver it around quite a bit better I think.

planet10 · 10th March 2009, 05:08 AM

Quote:

Originally posted by italynstylion
My situation is a bit unique since I've already attached the baffles.

I've been in that situation many times. Rasp works fine.

dave

loninappleton · 10th March 2009, 02:02 PM

Quote:

Originally posted by planet10

I've been in that situation many times. Rasp works fine.

dave

I can see it as a problem if one is trying to do this from the opposite side where you can't get much pressure on a file.

planet10 · 10th March 2009, 06:44 PM

Quote:

Originally posted by loninappleton
I can see it as a problem if one is trying to do this from the opposite side where you can't get much pressure on a file.

It isn't as easy working from the front on an already fixed baffle, but it works.

dave

italynstylion · 17th March 2009, 06:22 PM

I received the drivers yesterday and I'm going to start work on opening up the back side of the baffle where the speaker mounts.

I know I need to fill up the compression chamber a bit to get the horn action to be lower. What sort of stuff do I fill it with? I assume it has to be something totally solid right? Also, my drivers each came with a small soft circular pad type thing. What is this intended for? Does that go behind the driver to lessen the back wave re-entering the cone?

planet10 · 17th March 2009, 06:28 PM

Quote:

Originally posted by italynstylion
I know I need to fill up the compression chamber a bit to get the horn action to be lower. What sort of stuff do I fill it with? I assume it has to be something totally solid right? Also, my drivers each came with a small soft circular pad type thing. What is this intended for? Does that go behind the driver to lessen the back wave re-entering the cone?

Irregular shaped wooden blocks would be good for fill... then you can add them incrementally.

The wool felt pad is intended to be glued onto the back of the magnet to reduce reflections.

dave

italynstylion · 17th March 2009, 06:48 PM

Awesome, thanks for the quick response dave.

Do other than the felt pad is there anything else soft I should be putting in the compression chamber?

chrisb · 17th March 2009, 06:59 PM

Quote:

Originally posted by italynstylion
Awesome, thanks for the quick response dave.

Do other than the felt pad is there anything else soft I should be putting in the compression chamber?

That you'll want to "tune" by ear - with irregular surfaces in the chamber from the wooden blocks Dave suggested, you may not need as much damping, so I'd start with thin felt / underpadding material on one side wall and the bottom of the chamber.

Use a mono source (such as FM radio ) to compare treated to non treated enclosures, listening for reductions of coloration (if any)

italynstylion · 19th March 2009, 08:57 PM

Chris, thank you for explaining that further. I'm going to give that a shot. What things have you guys all used in the compression chambers to fill the space? I was thinking about using some wooden dowels that I'd slide into place. I'd use a a few different diameter dowel types to make sure it was an irregular surface.

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10th March 2009, 02:31 AM	#101
loninappleton diyAudio Member Join Date: Feb 2004 Location: Appleton, WI	That post just above shows a very good example of the flare technique. http://www.madaboutsound.com/prod_de...4&sa=cf&ctid=6

17th March 2009, 06:22 PM	#106
italynstylion diyAudio Member Join Date: Feb 2009 Location: Dallas, Tx.	I received the drivers yesterday and I'm going to start work on opening up the back side of the baffle where the speaker mounts. I know I need to fill up the compression chamber a bit to get the horn action to be lower. What sort of stuff do I fill it with? I assume it has to be something totally solid right? Also, my drivers each came with a small soft circular pad type thing. What is this intended for? Does that go behind the driver to lessen the back wave re-entering the cone?

17th March 2009, 06:48 PM	#108
italynstylion diyAudio Member Join Date: Feb 2009 Location: Dallas, Tx.	Awesome, thanks for the quick response dave. Do other than the felt pad is there anything else soft I should be putting in the compression chamber?

19th March 2009, 08:57 PM	#110
italynstylion diyAudio Member Join Date: Feb 2009 Location: Dallas, Tx.	Chris, thank you for explaining that further. I'm going to give that a shot. What things have you guys all used in the compression chambers to fill the space? I was thinking about using some wooden dowels that I'd slide into place. I'd use a a few different diameter dowel types to make sure it was an irregular surface.