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Author Topic: design question  (Read 611 times)

Frances Fisher

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design question
« on: March 25, 2014, 06:26:06 pm »

hey
i am new to the lab woofer idea and community and was exploring the different design options
and i doodled a design ( a sort of hodgepodge of all types ) and am looking to understand why it wont work
thanks and looking forward to the critique
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Ivan Beaver

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Re: design question
« Reply #1 on: March 26, 2014, 06:23:11 am »

hey
i am new to the lab woofer idea and community and was exploring the different design options
and i doodled a design ( a sort of hodgepodge of all types ) and am looking to understand why it wont work
thanks and looking forward to the critique
The driver choice is VERY CRITICAL in a horn.

Have you modeled this?  That would be a good start.

But a couple of comment-you have way to much front volume and no expansion on the horn and lots of wasted space in the cabinet.

What are you trying to "achieve" here.  What are the design goals?

You MUST have a target in mind-then design towards that target.
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Ivan Beaver
Danley Sound Labs

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Frances Fisher

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Re: design question
« Reply #2 on: March 26, 2014, 10:53:28 pm »

The driver choice is VERY CRITICAL in a horn.

Have you modeled this?  That would be a good start.

But a couple of comment-you have way to much front volume and no expansion on the horn and lots of wasted space in the cabinet.

What are you trying to "achieve" here.  What are the design goals?

You MUST have a target in mind-then design towards that target.
hey the horn i have in mind is a eighteen sound 18LW2400 or 18LW1400 and i am researching software to model it
the concept was a folded design but with a warmer sound and smaller design what does front volume mean ?
thanks for the help
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Ivan Beaver

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Re: design question
« Reply #3 on: March 27, 2014, 07:14:01 am »

hey the horn i have in mind is a eighteen sound 18LW2400 or 18LW1400 and i am researching software to model it
the concept was a folded design but with a warmer sound and smaller design what does front volume mean ?
thanks for the help
You need to read up on horn design a bit.

Why do you think those woofers are good for your "design"?

Why do you think your "design" will be warmer?

You do realize that a small horn does not go very low?

Front volume is the area right in front of the woofer-where it loads the throat of the horn.

I really don't see any "horn" in your "design".  It looks more like a plane wave tube-which offers no advantage (in a sub woofer) that I am aware of.
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Ivan Beaver
Danley Sound Labs

PHYSICS- NOT FADS!

duane massey

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Re: design question
« Reply #4 on: March 27, 2014, 10:47:29 am »

Maybe it's a .5hz horn?
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Duane Massey
Technician, musician, stubborn old guy
Houston, Texas

Frances Fisher

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Re: design question
« Reply #5 on: March 27, 2014, 02:39:27 pm »

You need to read up on horn design a bit.

Why do you think those woofers are good for your "design"?

Why do you think your "design" will be warmer?

You do realize that a small horn does not go very low?

Front volume is the area right in front of the woofer-where it loads the throat of the horn.

I really don't see any "horn" in your "design".  It looks more like a plane wave tube-which offers no advantage (in a sub woofer) that I am aware of.
first of all for the sake of clarity lets not call it a design but a doodle
the original intent of the first post was not to actually design a speaker but to learn some concepts i am very new at this and started to get overwhelmed by information
are there any sources you can recommend to "read up on my design"
and thanks for all the help
p.s. what would be a big woofer these are 18"
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David Morison

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Re: design question
« Reply #6 on: March 27, 2014, 06:02:42 pm »

the original intent of the first post was not to actually design a speaker but to learn some concepts i am very new at this and started to get overwhelmed by information
are there any sources you can recommend to "read up on my design"

You might want to Start here. There's been various updates to the program since that post but if you follow the thread through there's a lot of useful info.
HTH,
David.
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