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Old 19th October 2007, 07:33 PM   #11
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Old 19th October 2007, 07:44 PM   #12
thadman is offline thadman  United States
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I'd like to use a 15, but am a little hesitant using one up to 600hz. at 600hz, the wavelengths are about twice as long as the cone diameter (which would suggest omnidirectional behavior)...am I forgetting anything? One of the main goals of this build is smooth power response, and I do NOT want to sacrifice it for low end. Do they have the output, dynamic range, and distortion performance of dual smaller midranges (8-6") in the midrange and midbass (ie 100/150hz to 600hz). The Aurasound is fully capable of crossing as high I'd need it, so sensitivity (and power compression) is favored in fair of sheer volume displacement.
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Old 19th October 2007, 08:30 PM   #13
tinitus is offline tinitus  Europe
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This is not going very good ... are we forgetting that he is aiming at the "S" version ATC ... 95db ??
And please forget about crossing the Aurasound "as high as you want" ... maybe so from specs and graph, but reality may be much different
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Old 19th October 2007, 09:32 PM   #14
thadman is offline thadman  United States
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Quote:
Originally posted by tinitus
This is not going very good ... are we forgetting that he is aiming at the "S" version ATC ... 95db ??
And please forget about crossing the Aurasound "as high as you want" ... maybe so from specs and graph, but reality may be much different
As high as I'd like for a subwoofer. I'm sorry I should have been more specific. Most high inductance subs don't like being taken over 60hz. This driver should have NO problem tackling 250hz, thus I concluded that it'll go as high as I'd ever want or need.
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Old 19th October 2007, 09:35 PM   #15
tinitus is offline tinitus  Europe
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There is a certain myth around the ATC mid, but to be honest it dont impress me THAT much ... BUT the possibility of 95db sensitivity makes it an interesting candidate
You dont seem to like any 10-12" PA drivers ? ... I dont see there is any way around them
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Old 19th October 2007, 09:40 PM   #16
thadman is offline thadman  United States
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Quote:
Originally posted by tinitus
You dont seem to like any 10-12" PA drivers ? ... I dont see there is any way around them
What have I said that led you to believe I dislike 10-12" PA drivers? The Aurasound is going to be used as a subwoofer, I have no plans for crossing it to the ATC midrange.

Quote:
Originally posted by tinitus

There is a certain myth around the ATC mid, but to be honest it dont impress me THAT much ... BUT the possibility of 95db sensitivity makes it an interesting candidate
I've found no better subject evaluation of a true midrange. I'm aware that it is not a midwoofer and plan on crossing it accordingly, thus the reason for this thread.
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Old 19th October 2007, 10:21 PM   #17
thadman is offline thadman  United States
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What about the 18Sound active impedance control units (12NdA520 and 10NdA520). They are both much cheaper ($230/each) than the $800 ATC speakers, have low distortion and high efficiency.
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Old 19th October 2007, 10:27 PM   #18
tinitus is offline tinitus  Europe
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Ok, yeah I was a bit quick on that one ... only possible to edit fore a short while, so must be carefull with the words

I am looking into a high SPL 3way and am narrowing it down to either 15" or 18" woofer
Using a sub makes 10-12" woofers a better option ... yet there may be a question of how much BSC you will need ... I suppose with bigger woofers less BSC is needed
You dont want to loose too much of the ATC sensitivity ... so if some BSC is needed you might end up with a 12" or maybe even double 10" woofers
Unfortunately many interesting and effektive 10-12" midwoofer dont seem to have much lowend ... yeah, double 10" might be the way, allthough I am not keen on using two drivers playing the same frequency

Just thoughts, please go on
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Old 19th October 2007, 10:47 PM   #19
thadman is offline thadman  United States
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I'm going active with pro amps, so sensitivity will not be compromised.
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Old 19th October 2007, 10:52 PM   #20
tinitus is offline tinitus  Europe
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Does that mean that you will be able to give midbass amps exstra gain ... HOLTON is making such a thing and SKA makes active xo with possible exstra gain (could stress the driver) ... or else attenuating the mid will result in loss of sensitivity and it will all be for nothing, or am I missing something


18Sound active impedanse control unit ???
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