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Old 7th January 2009, 05:05 PM   #1
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Join Date: Feb 2006
Location: Ft Laud. Fla
Question TB Underhung drivers (new system for HT)

I'm considering the TB underhung series of drivers for a new home theater rig and wondered if the collective minds could audit my design thoughts ...
Woofer : TB W5-1685 underhung woofer

Tweeter :TB 1" dome tweeter

Thinking about 10L sealed box and crossing over at about 5-6 Khz
Rolloff on the woofer looks gentle enough to handle with a second order , but i'm thinking fourth order for the little tweeter.
Another idea that springs to mind is to run the woofer almost full range with the tweeter just perking things up past 8khz or so.
Feel free to shoot me down in flames kids!
TIA
Jorge
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Old 7th January 2009, 07:02 PM   #2
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I like it either way.

Depending on what the roll off looks like on the high end, I would say go full range and cross the tweeter in around 8-9k

What are you going to use for LFE?
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Old 8th January 2009, 11:44 AM   #3
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Default I have Peerless 10" for bottom end

I have 4 X 831727 for woofers down low , but they're oldies .
If or when they give out , i'm thinking some of the Dayton or peerless XLS series. Any other thoughts out there from the big dogs ?

TIA
Jorge
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Old 8th January 2009, 11:49 AM   #4
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Sounds like a nice integration to me.

I could definitely work with that.

Any ideas on the cabinets?
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Old 8th January 2009, 01:10 PM   #5
sreten is offline sreten  United Kingdom
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Hi,

The bass driver is tested here :
http://www.zaphaudio.com/5.5test/
http://www.zaphaudio.com/5.5test/compare.html

Note the very different test results compared to the TB specification.

Selecting a budget tweeter without test results is a lottery.
See : http://www.zaphaudio.com/tweetermishmash/
Routing of that style tweeter flange is not easy at all.

/sreten.

http://www.rjbaudio.com/Audiofiles/FRDtools.html
http://www.geocities.com/woove99/Spk...esigningXO.htm
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Old 8th January 2009, 02:01 PM   #6
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Default Didn't realize Zaph had tested them

Thanks for the update , i'll peruse those curves with care.
The tweeter flange, i'll cast in place.
What I do is rout out the tweeter flange about 1/4" larger than required and add a few 1/8" holes for grip.
Once that's done , I wrap the flange with about three turns of masking tape and cover the rest for protection.
A quick spray with canola oil (Pam cooking spray!) and the tweeter is screwed to the baffle.
Once attached I pour in a coat of Durham's water putty and smooth to near flush, after an overnight dry it sands to a perfect fit!
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