How well does a PA 460 model in this size box? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 7 Old 02-15-2017, 04:17 PM - Thread Starter
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How well does a PA 460 model in this size box?

How well or not well does a pair of PA 460 drivers model in a cabinet that is 24" wide x 25.5" deep and 48" tall. Want to put 2 drivers in this size cabinet and am afraid it will not have enough internal volume for this driver to really perform well.

I have room for 4 of these cabinets.
Want to make sure before I commit to constructing 4 of these large cabinets that the performance will be worth it.

I am more interested in response down to the 30hz range. 20hz response is great and all but with groups of folks watching movies I keep the volume lower. When listening to music however I can crank it up.
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post #2 of 7 Old 02-15-2017, 04:39 PM
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With 2 Pa460 in 16 cubic feet, tuned to 22 Hz, maximum output is about 118dB from 20Hz and up. Above 40Hz, it starts climbing to about 127dB at 70Hz. You could get about 4 dB more output at 30Hz if tuned to 28 Hz, but the 22 Hz tune seems a better compromise for movies and music. With 4 of these boxes, with 8 drivers total, you can add about 12dB to those numbers. Not bad at all.
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post #3 of 7 Old 02-15-2017, 06:46 PM - Thread Starter
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The dimensions listed above are external. Will be using 3/4 ply from HD for this project.
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post #4 of 7 Old 02-15-2017, 07:04 PM
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Here is 4 of your boxes with 8 460's: 20, 25 and 30hz


You'd have to make each box 8 times the planned size to be flat to the actual tuning.
The Dayton PA's like bathroom-sized ported boxes, they don't make efficient use of what they are given when ported low.
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post #5 of 7 Old 02-15-2017, 07:13 PM - Thread Starter
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Quote:
Originally Posted by BassThatHz View Post
Here is 4 of your boxes with 8 460's: 20, 25 and 30hz


You'd have to make each box 8 times the planned size to be flat to the actual tuning.
The Dayton PA's like bathroom-sized ported boxes, they don't make efficient use of what they are given when ported low.
How much input power are we talking here? 500 w a driver?
The 30 hz tune seems to look the best on this graph.
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post #6 of 7 Old 02-15-2017, 07:35 PM
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This is what I got, in room at MLP with two 460s in 14 cubic feet net, ported to 25hz.

LTD02 and Brazle like this.
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post #7 of 7 Old 02-17-2017, 02:21 AM
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Quote:
Originally Posted by jake515 View Post
How well or not well does a pair of PA 460 drivers model in a cabinet that is 24" wide x 25.5" deep and 48" tall. Want to put 2 drivers in this size cabinet and am afraid it will not have enough internal volume for this driver to really perform well.

I have room for 4 of these cabinets.
Want to make sure before I commit to constructing 4 of these large cabinets that the performance will be worth it.

I am more interested in response down to the 30hz range. 20hz response is great and all but with groups of folks watching movies I keep the volume lower. When listening to music however I can crank it up.




after driver, ports, bracing, etc. the net internal volume will probably be pretty close to 13.5 cu ft or so or a little over 6.5 c.f. per driver. the v.b.b.s. sub is around 6.25, so you would pretty much get that type of performance and could use the dsp settings for those cabs to good effect.


with all those drivers, I'd suggest a low tuning, perhaps something in the 16hz ballpark.





300 watts per driver into 8 drivers at ~6 cubic feet per driver.


mid bass goes "off the chart" and under 30hz, if you have a medium size room or smaller, you'll pick up quite a bit of room gain.


ddigler is running 6 and he was more than happy. 8 would be just a bit 'more better'. :-)


6 sub budget build - an LTD02 design


if you go this route and need some help getting the dsp figured out, plenty of folks here can assist. feel free to pm to me as well.
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