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Old 6th November 2007, 09:29 PM   #1
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Question Open baffle with B102???

Can I use these two drivers on a smallish open baffle with wings? Dimensions around 18 inches wide (less 7 to 9 inch wings) by 3 feet tall – approx dims.

Eminence Legend B102 10" plus B&C DE10-8 1" Mylar Horn Driver

http://www.partsexpress.com/pe/showd...number=290-495

http://www.partsexpress.com/pe/pshow...00&ctab=2#Tabs

Subwoofer would supply low bass.

TIA!
Godzilla
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Old 7th November 2007, 12:17 PM   #2
freddi is offline freddi  United States
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BLTSOUND sells B102 for $77.50ea (purchase 2) - Eminence's old B102 made a good fake Druid - perhaps the new one with higher qes would too. I posted a fair amount of data on the fake Druid and it had some good points such as decent power handling which could not occur with B20 in the same pipe - one doesn't see bass players picking CH250 or B20 :^)

B102 sensitivity vs B20 at 10 foot on-axis/in-room - what I'm surprised to see is the apparent difference at 50Hz
http://img148.imageshack.us/img148/9...02vsb20zy6.jpg

an open baffle might be ok and relieve the typical pipe reflection sounds of enclosures - are you intending to run the compression driver with no lens? that link shows a 2-bolt mount. Dayton's 1 3/8" thread waveguides might be fun with a tread-on driver.

(at this price range for two/side you're getting near the cost of Hawthorne's new 15 open baffle coax)
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Old 7th November 2007, 04:17 PM   #3
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Thanks Freddi. I would use a lens on the tweeter. I may use a different tweeter altogether in the end but that one looks interesting to me.

I guess the real question is finding a driver that works on an open baffle? Maybe this one might be a better choice..

http://www.partsexpress.com/pe/showd...number=290-515

I am scoping out my next project and want to use pro drivers. The goal is to learn by building something different. Pro drivers and open baffle are new to me. The only thing i want to maintain is using a wide range driver. Supplimenting the top and the bottom are easy. I dont want the speaker to be too big because i want it to be home friendly. I do want it to have punch and dynamics. Hi eff is important too. Low power tube amps or digital amps are my fav right now. I dont want to use Fostex again. I've used Fostex for my last few projects and want a change.

Any suggestions are welcome. Thanks!
Godzilla
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Old 7th November 2007, 07:37 PM   #4
Kensai is offline Kensai  United States
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Why not

Eminence Beta-12LTA

?

Its cheaper and speced better for what you want to do. Its almost exactly just a bigger version of a B20 ;-p

Kensai
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Old 7th November 2007, 08:24 PM   #5
smbrown is offline smbrown  United States
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I've always thought the Eminance Alpha 12A would be nice - great Qt for open baffle, nice wide repsonse and pretty inexpensive.
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Old 7th November 2007, 08:58 PM   #6
freddi is offline freddi  United States
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tonally I might pick 12lta over B102 and IIRC they're <$50 each at bltsound - at this qts point beta 12cx would allow concentric sound and I briefly ran one on a crude baffle with 21" woofer
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Old 7th November 2007, 08:58 PM   #7
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Hi godzilla,

http://www.partsexpress.com/pe/showd...number=290-515

I have thought of using the CA2010 from the link above. I figured it would make an all right copy of the hammer dynamics 12 or what ever it is called.

A person could probably make a nice coax out of it anyways.

If you put that on an open baffle, what would you use for bass? I would imagine there would be better midrange drivers than that like possibly the FF series from Fostex, though you want to get away from those as you say.
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Old 8th November 2007, 12:30 AM   #8
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I was looking at something else that might work cool on an open baffle and have pretty high efficiency.

http://www.eminence.com/pdf/cannabisrex.pdf

You might be able to use a speaker like this with a tweeter on top and 2 Alpha-15As or Beta-15As on the bottom.

I have no idea if it would sound good or not because it is a guitar speaker, but man it should have high efficiency.
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Old 8th November 2007, 03:24 AM   #9
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Great suggestions. Thanks everyone. Now i am thinking about this one...

http://www.partsexpress.com/pe/showd...number=290-403

Cheap enough and i can pick a pro tweeter and play away on an open baffle. Eventually i will probably build a handful of diff cabs but want to get a better understanding of how open baffle sounds.

Has anyone used this driver on an open baffle before?

Many thanks,
Godzilla
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Old 8th November 2007, 08:29 AM   #10
sumacSK is offline sumacSK  Slovakia
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what about this speakers... http://www.tonetubby.com/speaker.htm
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