suggestion for a 15 inch, under 200$ each that is good from 35hz to 300hz - diyAudio
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Old 21st November 2012, 08:13 PM   #1
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Default suggestion for a 15 inch, under 200$ each that is good from 35hz to 300hz

hi
im looking to build a two way with a 15 inch driver that would cover from 35 hz to 300hz and then would be crossed to a FR, the alpair 12p.

what are my options here?
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Old 21st November 2012, 08:24 PM   #2
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Have you thought about an entry level pro style driver? What kind of cabinet?
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Old 21st November 2012, 08:31 PM   #3
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Not a 15", but I'll still mention this one: https://www.solen.ca/pub/index.php?c...=2&s2=1&s3=&s4=
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Old 21st November 2012, 08:35 PM   #4
ScottG is offline ScottG  United States
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This depends on a lot of things..

efficiency/senstivity, baffle size, cabinet volume, vent or sealed, expected low freq. character/bandwidth, etc..

Assuming you want a fair bit of gain to overcome baffle-step pressure loss I'd recommend these for your intended bandwidth and price constraint:

Eminence Legend CB158 15" Bass Guitar Speaker 290-497



Honestly though, a 15" doesn't immediately come to mind for such a pairing..

The Audax PR240M0 in a large (volume) vented cabinet does.

http://www.madisoundspeakerstore.com...nal-10-woofer/
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Old 21st November 2012, 09:46 PM   #5
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okay, well I want a 15 inch because I have read so much about the advantage of a 15inch in the 100 to 300 hz, but I'm open for other size, but I want that big bass, and a 15 inch seems to be the way people do it.

Okay, the cabinet must not be larger/width then 18 inch. thats my only requirement, it can be quite deep but not too wide.

I dont need efficiency that much. I have two sub amps of around 150wpc and they have built in crossover.

I want the setup to be able to make a clean 30hz but im not too fussy about 25 hz. as long as it gets to 30hz.
I have no idea what cabinet I should do. I'm quite new in the diyaudio world, but I want to step up my game and go from a fullrange to a 2 way with a good sound in the critical range in the 100 to 300hz and so I decided for a 15 inch.
I will cross the FR at around 300hz with my preamp pass b1. I have a built in first order high‚ss and I could set it to 300hz.

I hope I gave enough details. ohh and for the enclosure, the 15 inch should be placed quite high because my setup is in my bedroom, quite large but still theres a bed placed at 3 feet from the speakers and the bed is 21 inch high, so I think that to get the best sound, the woofer would need to be placed around15 inch off the ground?

Should I build two different enclosure or just put both drivers in the same box?
Finally, I have a super tweeter, I might want to use it...

thanks
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Old 21st November 2012, 09:53 PM   #6
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Quote:
Originally Posted by ScottG View Post

Honestly though, a 15" doesn't immediately come to mind for such a pairing..
why?
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Old 21st November 2012, 10:03 PM   #7
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I'm reading about the "magic" of the ae td15m but for my application (crossed not much higher then 300hz) that would be a overkill right?
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Old 21st November 2012, 10:15 PM   #8
ScottG is offline ScottG  United States
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Originally Posted by murphythecat8 View Post
why?
Lower mass driver more "consonant" with moderate mass full-range.

Smaller baffle width (unless making them open baffle for the full-range driver).

Actually that might be a good idea - 15" with a an open baffle full-range a'la Olsher's "Basszilla". Say 9 cubic foot volume (CB15), about 18 inches wide, vented to the front with a tuning freq. of 22 Hz. That would give you plenty of spl to work with.. It would be total bass overload for a smaller room like a bedroom though.

yeah - 6 cubic foot sealed with the Audax would likely be sufficient for your needs..

basszilla - Google Search
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Last edited by ScottG; 21st November 2012 at 10:18 PM.
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Old 21st November 2012, 10:18 PM   #9
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Quote:
Originally Posted by murphythecat8 View Post
I have two sub amps of around 150wpc and they have built in crossover.
Make sure they will allow the extension up to 300 Hz. Many don't.
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Old 21st November 2012, 10:20 PM   #10
ScottG is offline ScottG  United States
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Quote:
Originally Posted by murphythecat8 View Post
I'm reading about the "magic" of the ae td15m but for my application (crossed not much higher then 300hz) that would be a overkill right?
No more than any other 15" in a bedroom.
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