Which tweeter for my line arrays?

[Mazeroth]

I have a few boxes of the Aura NS3-193s sitting here and am going to build a pair of 6.5-7' line arrays for the basement theater in the house we just closed on. I'm stuck on which tweeter to use and think I will avoid the PT2C after a friend of mine did some distortion measurements on the new batch and they came out horribly. The two tweeters I'm considering are:

http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=275-025

http://www.madisound.com/catalog/product_info.php?manufacturers_id=121&products_id=1767&osCsid=513ac0a0d75c78470f2b33411f565f34

As of now I'm leaning towards the Dayton for these reasons:

1. They will cost me roughly half as much as the Aura tweeters
2. Their center to center spacing is tighter
3. Easier mounting
4. They have a rising response above ~16k, which could aid in the comb filtering due to the non-optimal spacing of the tweeters but will probably be negligable

What do you guys think? I'm thinking of crossing them to the NS3-193s between 3-4 khz. while the bottom few octaves will be handled by subwoofers. I will use as many tweeters as needed to match the length of the mid line, which should be somewhere around 50 per side (anyone want to help wire?). These will be used for 90% movies so the utmost in SQ is not needed, though, I would like them to sound very good.

One other thing I was contemplating was making them more full-range and adding a small line of these Tang Band subs to the side, probably 8 of them, with a little bit of spacing to allow them to go the full line:

http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=264-831

Due to their lower sensitivity I would use a plate amp on the back of the arrays and utilize its crossover to save money on expensive inductors. Then I could make the NS3-193 enclosure sealed, find its F6 and try to cross around there (I'll measure, of course).

Thanks for any input you guys can give me! I really do appreciate it!

[peter_m]

Zaph used a similer tweeter: http://www.partsexpress.com/pe/showd...number=275-035
He used it here with the same woofer: http://zaphaudio.com/audio-speaker20a.html
And reviews it in here: http://zaphaudio.com/tweetermishmash/

Hope this helps

[Rick Craig]

I have a few boxes of the Aura NS3-193s sitting here and am going to build a pair of 6.5-7' line arrays for the basement theater in the house we just closed on. I'm stuck on which tweeter to use and think I will avoid the PT2C after a friend of mine did some distortion measurements on the new batch and they came out horribly. The two tweeters I'm considering are:

http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=275-025

http://www.madisound.com/catalog/product_info.php?manufacturers_id=121&products_id=1767&osCsid=513ac0a0d75c78470f2b33411f565f34

As of now I'm leaning towards the Dayton for these reasons:

1. They will cost me roughly half as much as the Aura tweeters
2. Their center to center spacing is tighter
3. Easier mounting
4. They have a rising response above ~16k, which could aid in the comb filtering due to the non-optimal spacing of the tweeters but will probably be negligable

What do you guys think? I'm thinking of crossing them to the NS3-193s between 3-4 khz. while the bottom few octaves will be handled by subwoofers. I will use as many tweeters as needed to match the length of the mid line, which should be somewhere around 50 per side (anyone want to help wire?). These will be used for 90% movies so the utmost in SQ is not needed, though, I would like them to sound very good.

One other thing I was contemplating was making them more full-range and adding a small line of these Tang Band subs to the side, probably 8 of them, with a little bit of spacing to allow them to go the full line:

http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=264-831

Due to their lower sensitivity I would use a plate amp on the back of the arrays and utilize its crossover to save money on expensive inductors. Then I could make the NS3-193 enclosure sealed, find its F6 and try to cross around there (I'll measure, of course).

Thanks for any input you guys can give me! I really do appreciate it!

You'll need a crossover point lower than 3-4K so the 3/4" domes won't work very well. I would build a test baffle with the Aura drivers (excellent choice by the way) and measure the line. At that point you'll see where your crossover frequency needs to be.

[Rick Craig]

There's also a new line array forum at Audio Circle that you may want to check out. There's been an interesting discussion about how to measure an array.