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midbass module  with 8" PA driver
midbass module  with 8" PA driver
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Old 17th July 2017, 02:02 PM   #1
fatpizza is offline fatpizza  Romania
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Default midbass module with 8" PA driver

I'm trying to decide on a design for a Fane Sovereign 8-225 8" driver

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For a frequency range between 60-200hz is vented the best solution?

Last edited by fatpizza; 17th July 2017 at 03:31 PM.
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Old 18th July 2017, 02:25 AM   #2
NEO Dan is offline NEO Dan  United States
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midbass module  with 8" PA driver
What is the intended application?
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Dan
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Old 18th July 2017, 06:32 AM   #3
fatpizza is offline fatpizza  Romania
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Quote:
Originally Posted by NEO Dan View Post
What is the intended application?
Just filling in the gap between my rinky dinky mains with 3.5" woofers and my 12" sub. The sub is built around an auto subwoofer and sounds like **** above 80 hz.
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Old 18th July 2017, 07:59 AM   #4
Sonce is offline Sonce  Macedonia
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Quote:
Originally Posted by fatpizza View Post
For a frequency range between 60-200hz is vented the best solution?
For Fane 8-225, yes it is.

Quote:
Originally Posted by fatpizza View Post
The sub is built around an auto subwoofer and sounds like **** above 80 hz.
This may indicate bad subwoofer enclosure design. Is it a bandpass box?
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Old 18th July 2017, 08:54 AM   #5
fatpizza is offline fatpizza  Romania
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Quote:
Originally Posted by Sonce View Post
For Fane 8-225, yes it is.


This may indicate bad subwoofer enclosure design. Is it a bandpass box?
It's an open baffle H-Frame with a JL Audio 12w0v3-4, 30-80 hz sounds good at moderate levels. Above 80 hz it sounds like there's room mode resonance, only thing is OB shouldn't have room modes so I chalked it up to the driver itself.
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Old 18th July 2017, 12:08 PM   #6
Sonce is offline Sonce  Macedonia
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OB doesn't preclude room modes.
Depending on dimensions, H frame may introduce its own resonances.
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Old 8th August 2017, 03:27 PM   #7
fatpizza is offline fatpizza  Romania
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I've been reading about tline designs and tried my hand at some designs. I'm having trouble figuring out the path length on a dual folded tline enclosure. Should it have a bend at the mouth?
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Old 9th August 2017, 09:49 AM   #8
TBTL is offline TBTL  Germany
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I would stick with ported. Transmission lines do not have great advantages over ported but are much harder to design. Their lower cutoffs and efficiencies are similar for equal enclosure sizes.

Last edited by TBTL; 9th August 2017 at 09:51 AM.
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