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Old 13th April 2008, 05:27 PM   #11
DaveCan is offline DaveCan  Canada
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I don't think it would be that much for shipping, around 10lbs per pair I think? You'll also have duty to pay, maybe $25 extra? You could contact Madisound and see what you would be looking at ..

I'm going to use these drivers in a sq installation eventually, if I can't go IB when I move to my new place soon... Anyhow good luck.. Dave
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Old 13th April 2008, 06:21 PM   #12
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Quote:
Originally posted by Cal Weldon
nicK,

You have asked for a woofer with a low Fs
You have asked for high dB
You have asked for low price

Ain't gonna happen my friend. You will have to adjust your requirements.
I agree. Pro drivers are my faves, and I have probably ALL the current data I can get from every brand I can find, and I know of nothing with these specs.

Nick, the cheap pro drivers on ebay are of variable quality, so may not really perform ll that well. There may be some gems, but who knows.

In Pro audio/PA use, 40Hz IS a sub. It's only in some areas of domestic hifi and HT that 20Hz is required (some studio applications too). To get response that low, and in an acceptable size box, efficiency is usually the price. If size were not an issue, a driver could likely be made to do it, but these applications are so rare, there aren't any new drivers with suitable specs. It's a neat little wall you've run into called Hoffman's Iron Law, which simply states you can have two of these: deep, small or efficient.

Also, there are lots of details to the driver design apart from the simple T/S parameters that will determine whether it'll make a good sub or not , rather than merely an LF noisemaker.

If you can go large, with a small footprint, ie slim and tall, look at the tapped horn thread. With the 3015LF, you can get 20Hz, high efficiency, but it's 500L or so and narrow bandwidth.
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Old 13th April 2008, 06:21 PM   #13
GM is online now GM  United States
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Quote:
Originally posted by DaveCan
Not exact for what your asking but lower fs than most.....
Ooh..... if these specs are as accurate as JBL's, then at a calc'd 96.81 dB/W/m and only -3 dB/20 Hz/half space in ~17.69 ft^3 it's quite the bargain at < 1/6th the 2245's price. No 'free lunch' though, the JBL has a much lower Le and 4x the power handling, ergo higher SQ and dynamic headroom. Still, for a HIFI/HT app, it should be more than adequate for all but the most hard-core bass connoisseurs, though two in parallel wired isobaric seems the best compromise overall if space is an issue and still > 2/3 cheaper.

GM
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Old 13th April 2008, 06:51 PM   #14
tinitus is offline tinitus  Europe
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http://www.mccauleysound.com/compone...iew.cfm?ID=126

It aint cheap and a bit old design by now

Oh I forgot, the request was a 15"

I dont see any other way than to use multiple drivers and maybe EQ, and that aint cheap either


Question... WHY do you need 20hz with 97db SPL, even if you have 97db main speakers, you may not need subs with same sensitivity
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Old 13th April 2008, 07:06 PM   #15
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For the moment I have 4 Peerless XLS 8 inch (discontinued)
and Yes the bass is good but I don't have a big BOOM sensation.

I search to reproduce good bass with same sensation in car audio.

¨¨Okay I put many bass shaker in my sofa¨¨

FEEL THE BASS !!!


THanks

nicK
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Old 13th April 2008, 07:13 PM   #16
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Oh, I see. Power is cheap, so give up the efficiency idea as it's volume displacement that determines SPL, not efficiency, and try something like multiple XLS12's. Some of them even work well in the TH's mentioned earlier with increased efficiency.
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Old 13th April 2008, 07:28 PM   #17
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Since you are looking for bass, and a large cheap speaker to do so, check this out:
http://www.partsexpress.com/pe/showd...number=295-475

It's not a PRO woofer, but pretty darn close, you get 94db sensitivity and plays 22hz. Should be MUCH better than that 8 you got now.

When I get my own place, I'm going with one of those 18" with a large sealed box, because I'm tired of blowing up 12's, because I like it low AND loud! Most DEEP BASSY 12's are only 87db or so, but play great lows. A 94db 18 should be much louder, and may sound lower due to its size..

Most car 12's sound good, but you need more than 1 to really handle 300W or more. A lot of 15's don't spec that much better either, so I'm thinking 18" is the way to get low and loud. That sounds like what you want, LOW AND LOUD!
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Old 13th April 2008, 08:01 PM   #18
tinitus is offline tinitus  Europe
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Quote:
Originally posted by nickthevoice
For the moment I have 4 Peerless XLS 8 inch (discontinued)
and Yes the bass is good but I don't have a big BOOM sensation.

I search to reproduce good bass with same sensation in car audio.


You dont need 20hz to do that, more like 50hz
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Old 13th April 2008, 08:17 PM   #19
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I KNOW I DON'T NEED 20hz to have bass feeling but I want cover all the audible frequency range !


Why use efficient woofer ?

My answer :
you buy 99 dB PRO woofer with 150w RMS sub amp.

to have the same POWER result with 85 dB woofer you need to buy 700 watt RMS sub amp (humm $$$$$$$$)

This is why I like EFFICIENT audio component. (and for DYNAMIC TOO)

nick
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Old 13th April 2008, 09:37 PM   #20
tinitus is offline tinitus  Europe
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Quote:
Originally posted by nickthevoice


My answer :
you buy 99 dB PRO woofer with 150w RMS sub amp.

nick

99db pro drivers are always midbass/midrange drivers with highish Fs

Pro woofers with low Fs(mostly 30hz) will be at least 18" and more like 95db

Usher 15" Studio woofers might do it there have even been 4 on sale in here...cant remember who

There is also a cheap Dayton 18" at 94db/22hz/0.44 qts(closed)
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