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PA vs Car Audio
PA vs Car Audio
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Old 18th November 2009, 12:20 PM   #21
jbell is offline jbell  United States
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Join Date: Apr 2003
Location: .
Originally Posted by davygrvy View Post
The Tuba36 is considered an "Okay" DIY project. You get $225 worth of sub from it.

You really want lower? TubaHT.. do it! You know you want to!
YouTube - BFM Tuba HT - 121db @ 22.2hz / 10.8v - With unmeasurable distortion using REW
agreed, the TubaHT is a worthwhile project. It's the first BFM sub I built, and it lived up to expectations. BFM member WiSounds modified the plans to put the driver access cover on the front. You remove the cover, you get more 40-60 for music, you put the cover on, and you get excellent 20hz HT effects. It's kinda big, and needs handles, but does exactly what it is designed to do. The 13' long horn path loads the driver to low 20's.

I've seen it work loaded with a cheap-o 12" car sub (alpine) to the recommended $70 dayton 15.

If you have room, it works.

Last edited by jbell; 18th November 2009 at 12:23 PM.
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Old 18th November 2009, 12:21 PM   #22
wg_ski is offline wg_ski  United States
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Join Date: Oct 2007
Originally Posted by jason51873 View Post
Well, this single sub is really only going to need to be used for very small events like 20-50 ppl max so I think the 1 sub should be enough. I just don't know if 80hz is going to be low enough, but on the other hand I don't want a huge sub to lug around

Is there something that is about the same as the Tuba36 that might be a bit lower?
T36 built correctly should get way below 80. The 4-pack of T36 Slims I heard sure did. Labhorns will blow them away, but well, they're BIGGER with two drivers. They should.

If you want something with a big bang for the buck try modeling this:
50 square inch throat, 21x34.5" mouth, 89" path length, M=0.6, driven with Kappa P15LF2. It should fit in a T36 Slim form factor. I'm still working out the folding details of this one - it's my next horn project. Four on the floor models solid to 40 Hz, two are useable.
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Old 18th November 2009, 08:49 PM   #23
curtisc is offline curtisc  United States
diyAudio Member
Join Date: Nov 2006
Location: Moscow (Southwestern Kansas)
I built a t30 for DJ use and it worked ok, if in the corner... have you looked @ JBell's dual mcm 55-2421 flh

the drivers and wood required are cheap enough for an experiment, and the boxes are overall smaller than a t36. I plan to build two for my DJ setup x-ed @ 125-150 hz.
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Old 19th November 2009, 07:07 AM   #24
mulletdude is offline mulletdude  Canada
diyAudio Member
Join Date: Jun 2008
to the OP if you are still looking for drivers. i did not read the entire thread to find out, i have 2 15's for sale they are the JBL 2225h and 2226h if you are interested PM me. i know this isnt the pace to sell stuff but i thought it a suggestion.
Bigger the better... unless you like peace and quiet...
But we can fix that too.
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Old 20th November 2009, 12:23 AM   #25
jason51873 is offline jason51873  United States
diyAudio Member
Join Date: Nov 2009
Ok, so now I'm starting to think that the TubaHT might be a better fit for what I wanna do rather then the Tuba36
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Old 12th February 2015, 08:21 PM   #26
houseandpool is offline houseandpool
diyAudio Member
Join Date: Oct 2012
Still....if your goal is to reach a higher spl in a room at 25 hz what is the best to do?
20 jbl cs1214 250 w rms, fs 28 hz, sensivity 90 db, x max 12.1 mm
6 precision device pd 2450 1000w aes, fs 32 hz, sensivity 98 db, x max 10.5 mm
let s say in both cases we have an infinite bafle...
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