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Multi-Way Conventional loudspeakers with crossovers

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Old 13th January 2004, 03:43 PM   #31
Bull is offline Bull  United Kingdom
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The Mackie subs do sound pretty dissapointing considering their cost especially the 18 inch active sub costing around 2000 pair.
All the Mackie Active PA subs use a bandpass design which seems to give low output and although their drivers[RCF Precision] are very good it can't be those resorting to poor bass.
More like the in built amps are not of the highest quality,because I've heard many active pa speakers including JBL EonG2 and they all seem to lack bass weight.
For 2000 a pair you can get sometime much better than the Mackie active subs with heaps more bass like stuff made by Yorkville and the EV stuff.
So Mackie for speakers and subs is overpriced and not that good,compaired to the decent 24.8.2 console made by Mackie.
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Old 14th January 2004, 05:54 AM   #32
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On the subject of PA speakers with 2 woofers (as seems to be the rage today!)

"Most 2,5-way designs I have seen are basically a standard two-way to which an extra woofer is added for more bass. So you get a large inductor in series with the mid-woofer lowering efficiency and therefore the maximum dynamic range. The second woofer is then added parallel also with a large inductor in series (something like 10 to 15mH). The result is nice deep bass from a relatively small floor standing cabinet but the speaker never seems to come alive."

Taken from http://home.hetnet.nl/~geenius/Auriga.html .

I still say that the JBL active with the double 15"ers (or was it 12"?) sound really, really good. I think we ought to clone them.
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Old 14th January 2004, 08:48 AM   #33
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I have 4 Subwoofer enclosures each with 2 X 18" drivers
and are powered by 1500WRMS each with ACTIVE SELFMADE IGBT SWITCHING AMP Total of 6000WRMS WITH RAW THUNDER BASS EXCLUSIVELY @10Hz
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Old 14th January 2004, 01:22 PM   #34
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Quote:
Originally posted by amp_man_1
I have 4 Subwoofer enclosures each with 2 X 18" drivers
and are powered by 1500WRMS each with ACTIVE SELFMADE IGBT SWITCHING AMP Total of 6000WRMS WITH RAW THUNDER BASS EXCLUSIVELY @10Hz
Sounds like a recipe for "brown notes" if your program source contains them.
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Old 14th January 2004, 05:06 PM   #35
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at what tuning,and what THD?

sounds interesting

large boxes.
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