10" driver for Bass tower in Horn project - diyAudio
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Old 22nd November 2007, 04:00 PM   #1
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Default 10" driver for Bass tower in Horn project

hi

i want to built a 4 way Horn system.

mid bass will be a fane studio8m in a 88cm diameter MDF tractrix horn 150hz - 1khz
mid radian 950pb in a 49cm MDF diameter tractrix horn
1khz - 8khz
tweeter jbl 2405 slot

below 150hz i want to use 4 10" woofers on each side in a bass tower.

any suggestions of woofer models ?

the one i most like at the moment is a beyma

10LW30/N

http://profesional.beyma.com/ENGLISH/producto.php

Angelo

my blog:

http://www.flickr.com/photos/12312992@N07/page1/
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Old 23rd November 2007, 02:14 AM   #2
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What exactly are you trying to achieve? LF (150 - what)? sealed or ported? max box volume? SPL?
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Old 23rd November 2007, 02:32 AM   #3
tinitus is offline tinitus  Europe
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Fore such an impressive setup you need better bass than any 10" PA driver can manage ... at least 15"

But with an 4-6 driver array you could easily find a 10-12" hifi woofer

http://www.madisound.com/catalog/pro...oducts_id=8304

http://www.partsexpress.com/pe/showd...number=296-430
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Old 23rd November 2007, 02:40 AM   #4
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Quote:
Originally posted by tinitus
Fore such an impressive setup you need better bass than any 10" PA driver can manage ... at least 15"
That's what I was thinking. Need to move lots of air by minimal diaphram displacement so that it stays low distortion and doesn't draw attention ti itself in not being horn loaded. With a similar-ish type setup, my plan was to use 4x18, sealed and LT'd to get 40 or 50Hz Q=0.5, then cross to dedicated tapped horn subs.
Shelved the project as I look like I'll be in this smaller house for a few more years yet.
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Old 23rd November 2007, 04:13 AM   #5
tinitus is offline tinitus  Europe
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A single 15-18" woofer wont move that much ... its in the sub region below 50hz that you need multiple driver
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Old 23rd November 2007, 04:33 AM   #6
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Quote:
Originally posted by tinitus
A single 15-18" woofer wont move that much ... its in the sub region below 50hz that you need multiple driver
Depends on your definition of loud (my home up north is huge open plan space) and low distortion. Those horns are going to have prodigious output capacity and clarity and messing up sub 150 will be audible.

I'd only do push-push now to get mechanical vibration cancellation, so at minimum a pair/side would be needed.
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Old 23rd November 2007, 11:15 AM   #7
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i don't want the bass tower to be too big. Acapella uses in their basstower also 10" drivers, sealed, probably Dynaudio.

Next choice i was thinking is the next bigger model, Beyma 12" LX60 in a sealed enclosure, 60l - 80l volume for each woofer.

Since i pretend to drive them active with a plate amp, no subwoofer might be needed, since i can equalize the lowest frequencies.

A idea would be also to use 2 Beymas in the bass region, above 40 hz, and use 2 subwoofers for the lowest bass.

Any suggestion ?

Angelo
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Old 23rd November 2007, 04:13 PM   #8
tinitus is offline tinitus  Europe
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Using a PA 12" like that in closed and then boost low frequencies will leave you with a dip/bump in low midbass ... when using a simple plate amp as EQ

So why dont you do like the Acapella you refer to, and what I suggested in the first place ... use good 10-12" HIFI woofers with appropriate sensitivity around 90db and nice low Fs ... 6 each side should do
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Old 23rd November 2007, 08:37 PM   #9
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there is also a studio bass from beyma, which i heard good comments about it: the 12B100-R

http://www.toutlehautparleur.com/bey...00r-p-854.html

http://www.fullrange-speakers.com/en...tsysteme/zarah

might be better then the lx60 ?
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Old 23rd November 2007, 08:43 PM   #10
ScottG is offline ScottG  United States
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Ah, so what you really want is a bass array - and likely a sealed driver bass array that works to 40 Hz in room without to much volume or excursion.

It looks cheap, but it isn't..

Try modeling this driver:

http://www.eminence.com/guitar_speak...0&SUB_CAT_ID=5
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