Big OB, Again

CLS · 14th April 2008, 03:40 AM

Although many doubts about OB arose recently, I still like the sound and have the feeling that it's relative easier to get good sound in room.

So, here it goes again. This project is for a friend of mine. He wants to build a system for a high quality semi-PA / semi-HiFi venue. The dimensions of the room are about 7~8m wide x 25m long with very high ceiling, up to about 15~20 seats.

He wants first class sound quality, so here are the proposals:

Hi: TAD TD-2001 (or 2002), mated with 18sound XT1086
Mid: TAD TM-1201 on OB (1 or 2 per side)
(these 2 TAD drivers are already on hand)

Low: some 15inchers on OB, not decided yet.

And this will be an active 3way system, prelimenary plan on xover points are 200Hz/1.5kHz.

(some even bigger stuff for sub-bass is ready on hand if the OB bass is not enough....)

Followings are the layout possibilities. Well, as you can see, basically the ideas are more or less stolen from Magnetar, AJ, Lynn Olson.... (and sorry if any others I fail to mention)

At first glance, the one on the left seems easier on mid-bass integration. Howerver, in the previous posts, AJ got successful result from the verical bass array which I am not sure if I can replicate that....

Any thoughts?
Any comments are welcome.

Audiodidakt · 5th May 2012, 07:59 AM

Very nice set of drivers :-)

Would not 1500 hz be above dipole-peak for the tm-1201?

jerome69 · 5th May 2012, 08:45 AM

I recommend to do 20-100/100-1.5k/1.5k-20k
Better in my opinion than 200/1.5k
I strongly recommend H Frame for bass.
I wonder if your friend want full OB ? You can add two box sub. It's cheaper.

Look at the StigErik project

14th April 2008, 03:40 AM	#1
CLS diyAudio Member Join Date: Jun 2005 Location: Taiwan	Big OB, Again Although many doubts about OB arose recently, I still like the sound and have the feeling that it's relative easier to get good sound in room. So, here it goes again. This project is for a friend of mine. He wants to build a system for a high quality semi-PA / semi-HiFi venue. The dimensions of the room are about 7~8m wide x 25m long with very high ceiling, up to about 15~20 seats. He wants first class sound quality, so here are the proposals: Hi: TAD TD-2001 (or 2002), mated with 18sound XT1086 Mid: TAD TM-1201 on OB (1 or 2 per side) (these 2 TAD drivers are already on hand) Low: some 15inchers on OB, not decided yet. And this will be an active 3way system, prelimenary plan on xover points are 200Hz/1.5kHz. (some even bigger stuff for sub-bass is ready on hand if the OB bass is not enough....) Followings are the layout possibilities. Well, as you can see, basically the ideas are more or less stolen from Magnetar, AJ, Lynn Olson.... (and sorry if any others I fail to mention) At first glance, the one on the left seems easier on mid-bass integration. Howerver, in the previous posts, AJ got successful result from the verical bass array which I am not sure if I can replicate that.... Any thoughts? Any comments are welcome.

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5th May 2012, 07:59 AM	#2
Audiodidakt diyAudio Member Join Date: Nov 2005 Location: Norway	Very nice set of drivers :-) Would not 1500 hz be above dipole-peak for the tm-1201?

5th May 2012, 08:45 AM	#3
jerome69 diyAudio Member Join Date: Feb 2008 Location: Lyon	I recommend to do 20-100/100-1.5k/1.5k-20k Better in my opinion than 200/1.5k I strongly recommend H Frame for bass. I wonder if your friend want full OB ? You can add two box sub. It's cheaper. Look at the StigErik project

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