Array of 12 tweeters in 3x4 configuration for Cinema? - diyAudio
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Old 23rd December 2012, 06:55 AM   #1
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Default Array of 12 tweeters in 3x4 configuration for Cinema?

Can I use highend scanspeak Tweeters 12 in no each with sensitivity of 92.5db in a very small array of 3x4 drivers in hardly 1 squarefoot baffle for cinema application?
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Old 23rd December 2012, 12:40 PM   #2
JMFahey is offline JMFahey  Argentina
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Basically yes, but don't mount them on a flat panel; they will be *too* directional, plus you will hear a horrible "comb" effect.
To reduce that, mount them as if they were on the surface of a sphere.
*OR*: mount them edge to edge in a vertical 12 high column, line array type.
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Old 23rd December 2012, 04:58 PM   #3
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I believe using them in high column 12 will give more comb effect than the flatpanel I will definitely arrange on an arc...
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Old 23rd December 2012, 04:58 PM   #4
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but are there any advantages of using this config than the horn?
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Old 23rd December 2012, 06:01 PM   #5
JMFahey is offline JMFahey  Argentina
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Line array systems avoid (ok, strongly minimize) combing problems by stacking speakers as close as possible so they behave as a line radiator, producing a single cylindrical wavefront.
Don't know what horn you are talking about, sorry.
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Old 23rd December 2012, 06:30 PM   #6
sreten is offline sreten  United Kingdom
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Hi,

You can do it - but that doesn't mean its a good idea - its a bad idea.
What you'll get for your money is way worse than other better options.

103dB/W is not difficult from a horn, without all the phase problems.

rgds, sreten.
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Old 24th December 2012, 03:22 AM   #7
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Quote:
Originally Posted by sreten View Post
Hi,

You can do it - but that doesn't mean its a good idea - its a bad idea.
What you'll get for your money is way worse than other better options.

103dB/W is not difficult from a horn, without all the phase problems.

rgds, sreten.
so is it possible to use a good vifa driver into horn? how much sensitivity can be achieved with horn when used with a 91 db driver? when used with a horn?

I see alot of the jbl designs where they use a 5 inch mid but with a horn resulting the 105db sensitivity! can I do that?
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Old 24th December 2012, 09:09 AM   #8
JMFahey is offline JMFahey  Argentina
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Quote:
so is it possible to use a good vifa driver into horn?
No, it's not a horn driver.
Quote:
how much sensitivity can be achieved with horn when used with a 91 db driver? when used with a horn?
None, it can't be used that way.
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Old 24th December 2012, 12:13 PM   #9
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yeah understood that we cant use the conventional drivers in horn but is it possible to use the mids just like tweeters in the 3x4 config?
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Old 24th December 2012, 05:33 PM   #10
JMFahey is offline JMFahey  Argentina
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Quote:
is it possible to use the mids just like tweeters in the 3x4 config?
No, but you can use them as mids.
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