Line Array with RS 40-1197

I've got seven of these things laying around and am trying to scrounge up a bunch more to make a pair of line arrays. I was thinking in the neighborhood of 8 ft tall with 16 drivers per array. I've never made a line array before anybody out there think it's worthwhile or should I do something else with these things?

P.S.
I'm also thinking of making some computer speakers out of the 4 40-1354's I have.
 
Dustin Haug said:
I've got seven of these things laying around and am trying to scrounge up a bunch more to make a pair of line arrays. I was thinking in the neighborhood of 8 ft tall with 16 drivers per array. I've never made a line array before anybody out there think it's worthwhile or should I do something else with these things?


You should download and read the whitepaper on Jim Griffin's Linus Array. To get a line array to work well you would have to add a tweeter array as well.

I have alot of 1197s and figured i might try a sqaure column with a driver on every face (and a single Supertweeter facing forward) to eat up 8 drivers. Using crossovers you could use up 8 by doing a 2.5 way MTM like the Krix Euphonix (SS amps) or use up 10 with a WWWWMT where the 4 Ws are the same as the M (tube friendly).

I'm also thinking of making some computer speakers out of the 4 40-1354's I have.

The only way you will get these close to your monitor is if it is LCD or you design something here each pair of drivers has their magnets "glued" together.

With my 4 I'm either going to build one of these Bipolar Pipes or a bipolar TL (floating around in my head right now).

dave
 
sqaure column with a driver on every face

That'd be pretty cool, I'll definately consider something on that order. Although your WWWWMT idea is a little more appealing to me, any suggestions for a tweet to use in the line or WWWWMT?

The only way you will get these close to your monitor is if it is LCD

It is. Probably should have mentioned that, sorry.
 
Dustin Haug said:
That'd be pretty cool, I'll definately consider something on that order. Although your WWWWMT idea is a little more appealing to me, any suggestions for a tweet to use in the line or WWWWMT?

You would use the same SuperT as you would use with the column. If have been trying out quite a few (just swapped in 4" isophon alnicos last nite - 4" teeter on top of a 4" FR!). Check out my BD-Pipes page for some ideas. Even the little $2 a pr cones are pretty good.

[IMGDEAD]http://p10hifi.net/tlinespeakers/TLS/design/images/WWWWTM.jpg[/IMGDEAD]

The idea behind the WWWWMT (or WWWWTM) is to use brute force to solve baffle-step, to get more active surface area in the bass and free the mids up a bit. You put a 1st order XO at the bafflestep between the 4 Ws* & the M. You push the XO down by making the cabinet wider - about 13" for a 350 Hz XO. The M, in this case can be run all the way up, with the ST coming in about 10k. All 1st order XOs. And since you are XOing same driver to same driver at the low end you get seemless character matching. The 4 Ws could be stacked one atop the other, in a WW-WW push-push or 1 on each side.

*(wired series/parallel for an 8 ohm load)

It is also easy to convert to bi-amp with PLLXOs.


dave