how's this for cabinet design?

legendaryfrog · 18th November 2006, 11:30 PM

do you have any suggestions?

he drawing is from Paint so its pretty bad.

leadbelly · 18th November 2006, 11:36 PM

What is it? It appears to use some kind of horn/wave loading, but the cross section jumps all over the place in the throat.

legendaryfrog · 19th November 2006, 12:12 AM

IGNORE THE FIRST PICTURE

this is "edited"

leadbelly · 19th November 2006, 12:50 AM

My question remains.

freddi · 19th November 2006, 01:24 AM

for that level of cutting complexity you might look a an accomplished designer's work - RCA-Fan (Bill Woods of Traynor and AH!) 20cm driver horn - no hard cuts - I think he tries to get a "sound" where his speakers will play good cello and bowed bass

Finished speaker
http://gallery.audioasylum.com/cgi/g...eaker_004.jpg_

http://gallery.audioasylum.com/cgi/g...168&f=PLAN.gif

http://gallery.audioasylum.com/cgi/g...68&f=BRACE.gif

http://gallery.audioasylum.com/cgi/g...&f=PLANS-2.gif

lndm · 19th November 2006, 04:12 AM

Yes, as has been brought up, the pipe goes big, small, big, small, big. Its hard to look past that fact when this is so important.

I'd also like to know, what is it?

legendaryfrog · 19th November 2006, 01:08 PM

well.....its a speaker enclosure......

leadbelly · 19th November 2006, 02:27 PM

Quote:

Originally posted by legendaryfrog
well.....its a speaker enclosure......

You might want to read up a bit on the very basics of speaker design. Speaker enclosures aren't designed by just roughly sketching dimensionless shapes for any driver. Maybe if you could tell us what kind of speaker you were trying to design (back loaded horn, transmission line, etc.) we could point you in the right direction.

Richard Ellis · 19th November 2006, 02:59 PM

I think your confusing two different types of enclosures
The panel inside your tower is loosely the type of back horned design...these horns are set up to provide an increasing volume as the "start" of the horn is small & increases in volume & as the sound wave moves further away it increases in volume until it exits the enclosure in a relatively large "mouth".
The port you sketched is of a very different type called the " Bass reflex" design. That type of design takes into account alot of specifications of the particular driver being used.
With these specifications you will have a specific box volume, port size, Port length, and frequency "tuned" to the box.
___________________________________Rick..........

lndm · 20th November 2006, 09:07 AM

Perhaps the intention was a mass loaded transmission line?

legendaryfrog, did you see this design somewhere or did you come up with it? There are various enclosure types that are vastly different in function but which look the same to the untrained eye.

Perhaps you might just list what you would like to have in the bass region (loud, accurate, whatever), and we could suggest ways to get it. From your drawing I'm guessing that you're interested in a conventional transmission line.

18th November 2006, 11:36 PM	#2
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	What is it? It appears to use some kind of horn/wave loading, but the cross section jumps all over the place in the throat. __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

19th November 2006, 12:50 AM	#4
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	My question remains. __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

19th November 2006, 02:59 PM	#9
Richard Ellis diyAudio Member Join Date: Sep 2006 Location: Mar del Plata, a BIG seasonal getaway city, can see the Ocean from our residence.	Enclosures... I think your confusing two different types of enclosures The panel inside your tower is loosely the type of back horned design...these horns are set up to provide an increasing volume as the "start" of the horn is small & increases in volume & as the sound wave moves further away it increases in volume until it exits the enclosure in a relatively large "mouth". The port you sketched is of a very different type called the " Bass reflex" design. That type of design takes into account alot of specifications of the particular driver being used. With these specifications you will have a specific box volume, port size, Port length, and frequency "tuned" to the box. ___________________________________Rick..........

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19th November 2006, 01:24 AM	#5
freddi diyAudio Member Join Date: Aug 2005	for that level of cutting complexity you might look a an accomplished designer's work - RCA-Fan (Bill Woods of Traynor and AH!) 20cm driver horn - no hard cuts - I think he tries to get a "sound" where his speakers will play good cello and bowed bass Finished speaker http://gallery.audioasylum.com/cgi/g...eaker_004.jpg_ http://gallery.audioasylum.com/cgi/g...168&f=PLAN.gif http://gallery.audioasylum.com/cgi/g...68&f=BRACE.gif http://gallery.audioasylum.com/cgi/g...&f=PLANS-2.gif

19th November 2006, 04:12 AM	#6
lndm diyAudio Member Join Date: Mar 2006 Location: nsw	Yes, as has been brought up, the pipe goes big, small, big, small, big. Its hard to look past that fact when this is so important. I'd also like to know, what is it?

19th November 2006, 01:08 PM	#7
legendaryfrog diyAudio Member Join Date: Oct 2006	well.....its a speaker enclosure......

20th November 2006, 09:07 AM	#10
lndm diyAudio Member Join Date: Mar 2006 Location: nsw	Perhaps the intention was a mass loaded transmission line? legendaryfrog, did you see this design somewhere or did you come up with it? There are various enclosure types that are vastly different in function but which look the same to the untrained eye. Perhaps you might just list what you would like to have in the bass region (loud, accurate, whatever), and we could suggest ways to get it. From your drawing I'm guessing that you're interested in a conventional transmission line.

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