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Old 15th May 2009, 04:56 AM   #1
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Default Which driver for Jensen Imperial bass cab?

I'm interested in building this great cabinet...but would appreciate getting some ideas for best driver...assuming I cannot locate a vintage pair.

For example, would this 18-inch unit from US Speaker be worth considering? The write-up says it is suited for a horn.

http://www.usspeaker.com/faital%20pro%2018HP1020-1.htm

Or the Radian -

http://www.radianaudio.com/index.php...mart&Itemid=40

Regards.

Andrew.
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Old 15th May 2009, 09:37 AM   #2
tinitus is offline tinitus  Europe
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I have no idea about proper specs fore Jensen Imperial

But regarding Faital the 18FH500 looks to be the one fore hifi

About the Radian, my guess is that Qts 0.5 is too high, but might be nice fore a closed box
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Old 15th May 2009, 01:55 PM   #3
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You should look for drivers with strong motor and Qts not higher than 0.3.
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Old 15th May 2009, 02:26 PM   #4
exurbia is offline exurbia  Australia
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Default Yammie 3882B

What about the Yammie 3882b ? i think b stands for balltearer, they are an absolute monster.
From the japanese PDF,
Fs 30Hz
Qts .1
vas 296 Litres
VC 100mm
a beautiful looking speaker, it is a shame to put them in a box.
I've got 6 of them, i will sell a pair of them.
Peter.

p.s it is a 15" driver 102dB 1 Watt according to the nips.
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Old 15th May 2009, 02:53 PM   #5
exurbia is offline exurbia  Australia
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Are you going to build the decware version of the imperial sub ?
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Old 15th May 2009, 04:06 PM   #6
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This one from Selenium is recommended for folded horns. Reasonably priced also.

http://www.parts-express.com/pe/show...number=264-398
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Old 15th May 2009, 10:34 PM   #7
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Cal...that woofer looks good.

Peter...I was thinking of the Jensen Imperial 'Build In'

This one -

http://www.dcaudiodiy.com/jensen_imperial/page_11.jpg

Normally, I build cabinets using CNC routing. I have a guy in the US who's requested a Jensen...but at 8/10 the size. He'll use them resting on their sides...and place HF horns on top.

But for me, I just want to trial one cabinet using ply to test the bass response. I'm doing this because I have someone inquiring about a bass horn because he's crackers on organ music. He lives/breaths that opening track from A Space Odyssey 2001 where the organ grumbles away at below 30Hz.

Happy to consider a pair of your drivers. Please PM me or email alt@creationaudio.com.au

Kind regards.

Andrew.
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Old 15th May 2009, 10:47 PM   #8
tinitus is offline tinitus  Europe
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As mentioned by Exurbia, Decware might be worth a "visit", fore info on this design Sounds like they have build lots of them, or should one stay clear of their Imperial versions?

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Old 15th May 2009, 11:28 PM   #9
exurbia is offline exurbia  Australia
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Default Decware Imperials

I can vouch for the Decware Imperials, I built a pair of them for our old house. Using one of the Yammies and a P-Audio BM co-ax. They really do deliver what Steve promises with the design.
If we had room in our new house i'd definitely build another pair.
Peter.
I should add that the twin driver setup is truly scary, i had a pair of Altec 210's with the same driver compliment. No contest, the Decware killed em dead. Although when the 210's were cut in half they sounded a lot better.
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Old 16th May 2009, 12:15 AM   #10
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On Decware

I note some drivers fire in, and some face out.

If I'm only after a bass unit up to, say, 150Hz....which config should I opt for?

Andrew.
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