You can force it with EQ thus increasing distortion ten fold. The driver will be compliance controlled below Fs,and they arent linear at the best of times. Just check jblpro.com,2226 distortion curve,or beyma,and watch distortion increase at <100w levels below Fs.
These little driver arrays could really just be replaced with one large woofer with little change if displacement is the same.
Cheers!
mike.e said:
As long as the larger driver sounds good at 300-500hz, I agree, but a "typical" subwoofer driver doesn't
Marginally off-topic, but what do you all make of this?
From www.philjonesbass.com (maker of bass guitar amps and cabinets):
They are supposed to have solid output down to 30Hz, which is the low B on an extended range electric bass. The little aluminum drivers are 5" cones, I believe.
From www.philjonesbass.com (maker of bass guitar amps and cabinets):
An externally hosted image should be here but it was not working when we last tested it.
They are supposed to have solid output down to 30Hz, which is the low B on an extended range electric bass. The little aluminum drivers are 5" cones, I believe.
I guess I'm not alone in my thinking. I'd have made them line sources though and used more drivers.
johninCR said:
I don't know of any true subwoofer that plays well in the 500Hz range. If the drivers Fs is above 25Hz it's not a real subwoofer anyway IMO, that's what Mids and Woofers are for. As long as you get the time alignment right there is no problem with the harmonics being handled by the drivers that are designed to do this. Again, just my opinion.
Super comb filter. Vertical arrays for horizontal dispersion. Horizontal arrays for vertical dispersion,but not both at the same time with wavelengths smaller than driver to driver spacing too.
http://www.prosoundweb.com/install/cpm/lobes/lobes.php
An externally hosted image should be here but it was not working when we last tested it.
http://www.woodartistry.com/linkwitzlab/x-sb80-3wy.htm
Attachments
bwbass said:
at 30hz they will act largely as one driver,but not above the bass region.
Im not saying that their approach is bad,its just that theres no real advantage that I see.
Replace all those little drivers with a driver of the same displacement,same box size. Then replace all those little 5"s with
something like a fitzmaurice top box.
'patent pending' = oh it must be good!
'proprietary driver/loading scheme' = oh it must make it excellent
=not always true
I agree about them acting as one large driver in the bass range. I think in this particular case they're creating a virtual single large speaker with the high-frequency cone breakup of a zillion little speakers. It probably puts a nice "edge" on a bass guitar sound, especially slapped, but I doubt the fundamental sounds much different.mike.e said:
Lots of HF cone breakup... not very useful in a sub, I think.
Having 2 drivers play high frequencies does sound bad, but I've found with the arrays I've built that the negative effects of comb filtering are minimal and the net result ends up in the HF being somewhat suppressed. I haven't tried vertical arrays stacked next to each other, but they may have the same net result. If so, I can see these cabs having a clear advantage over similar sized larger driver pro cabs in terms of extension, power handling, and sensitivity.
I'd like to get my hands on about 100 of those drivers at $5 ea. They would be perfect for my corner horn array idea and probably give me sub 30hz extension or maybe with a little more horn length be able to forget about a sub.
Have any of you doubting Thomas's ever heard a good line array to appreciate what small drivers are capable of when working as a group?
I'd like to get my hands on about 100 of those drivers at $5 ea. They would be perfect for my corner horn array idea and probably give me sub 30hz extension or maybe with a little more horn length be able to forget about a sub.
Have any of you doubting Thomas's ever heard a good line array to appreciate what small drivers are capable of when working as a group?
Im not doubting thomas,Im an objective-ish cynic who doesnt have access to cheap drivers[New Zealand]johninCR said:
😀
Here Mike,
Plug this into HornResp and put it in a corner, I can't figure out how to do a screen shot:
s1 324
s2 440
s3 625
s4 970
s5 2680
Sd 800 CMS 3.96E-05 MMD 54.72 RE 8
BL 18.44 RMS 7.68
VTC 12000
VRC 0
That's a rear loaded corner horn array of 16, $.49/ea, 4", Fs 105, 86db, NSB's that will fit in a 50cmX50cm corner. 106db/1w/1m +/- 3db 39hz-250hz from the horn and 98db/1w/1m from the front radiation, so you'd have to EQ down the horn. Not bad for $8 in drivers and a sheet and a half of 12mm ply.
That doesn't even consider the benefits of line array dispersion. Arrays and horns are real science, so there's nothing to be cynical about, it's not some rip off tweak.
Plug this into HornResp and put it in a corner, I can't figure out how to do a screen shot:
s1 324
s2 440
s3 625
s4 970
s5 2680
Sd 800 CMS 3.96E-05 MMD 54.72 RE 8
BL 18.44 RMS 7.68
VTC 12000
VRC 0
That's a rear loaded corner horn array of 16, $.49/ea, 4", Fs 105, 86db, NSB's that will fit in a 50cmX50cm corner. 106db/1w/1m +/- 3db 39hz-250hz from the horn and 98db/1w/1m from the front radiation, so you'd have to EQ down the horn. Not bad for $8 in drivers and a sheet and a half of 12mm ply.
That doesn't even consider the benefits of line array dispersion. Arrays and horns are real science, so there's nothing to be cynical about, it's not some rip off tweak.
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