I was going to say, having heard them in full force, the double woofer, 48" high version, with 5000rms each, 4 of them one in each corner of the dance floor, there's no way that's a 50hz sub. These things are absolute MONSTERS!
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Oliver,
Manly in size, not so manly in output. Can't win 'em all.
BTY, Short Fuse Lee has left the post to the ones willing to do some comparative work.
Art
You sure art? I'm not talking about the JBL loaded sub, but the output was stunning from these things. Yes I know it is indoors but the output was literally PAINFUL to both my body and head / ears.
The (40) 18" drivers arrayed from a live stage (20 Martin Audio ws218x) couldn't even touch the output of these And yes they were being run all out with Victor Calderone spinning, the sound guy Jason Ojeda confirmed it.
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So was the GMC 671 diesel engine in the bus my dad drove our family around the country in.
That had some heavy parts...
I don't doubt they are loud, I was just comparing Olivers sim of Lee's Berthoid to the Keystone, it is more than twice as big with less output on everything but below 35 Hz.
Point being, most knowledgeable car enthusisasts don't go around saying "there's no replacement for displacement", because forced induction is typically regarded by everyone as the replacement for displacement.
weltersys said:
Forced induction is a way to get more power out of an engine, as David McBean said, it's like horn loading.
A larger displacement forced induction engine will have a larger power output, just as a larger displacement loudspeaker will have more SPL output, regardless of the enclosure type.
Lee Interesting reading;
http://www.electrovoice.com/downloadfile.php?f=wp - Subwoofer Arrays v04 .pdf
http://www.electrovoice.com/downloadfile.php?f=wp - Subwoofer Arrays v04 .pdf
Formula One uses conventional petrol / gasoline. A top fuel dragster uses up to 90% nitromethane / 10% methanol. This at least doubles the power.
Kind regards,
David
it's the juice
The sanctioning body was able to ban them by specifying the types of fuel that could be used.
Dave
These engines ran on 60% Toluene, 40% Hexane, not petrol or methanol.It's not the only replacement - in the mid-1980's, 1.5 litre displacement turbo-charged Formula One engines were developing up to 1,400 bhp in qualifying mode
SNIP...
David
The sanctioning body was able to ban them by specifying the types of fuel that could be used.
Dave
Hi Dave,
It seems that there can be doping problems in motorsport too - not just in cycling and football
.Kind regards,
David
In the link below you can find plans and useful information to simulate similar design. The CAD files are automated and integrated with hornresp.
https://freeloudspeakerplan.rf.gd
https://freeloudspeakerplan.rf.gd
I just stumbled upon this thread as it got revisited, so what make those LEVIN designs so special ??
i mean 5kw to each box and 4 of them mean, 20kw or so for sub duty, so...
what if you throw 20kw to keystones with ipal drivers or 18DS114 , does it make a difference ?
looks like there is people who like the "sound" of a given box and that is tied directly to the psycoacoustics phenomena as every design have a unique sonic fingerprint.
we are habit animals
Humans like patterns and when something makes a lasting impression in our brain we like to repeat over and over to get that source of "gratification"
regardless if it is harmful or otherwise.
but when you get fanatic over a design you loose scientific objectivity thing start to get ugly.
as ccxlr8r said
Huge FLH horns can sound great and have high efficiency, so require relatively little power to achieve high output. In the era when the Bertha/Levan cabinets were popular in dance clubs, power cost over 10 times per watt as now, and drivers had little excursion.
Loaded with the same drivers, an FLH of twice the volume (around 30 cubic feet per driver compared to 15) of a TH is going to win in pretty much every comparative aspect- louder, more range, better impulse response.
Art
Hey Art,
ic
so ,is there something than can be improved on those Huge FLH horns to squeeze todays drivers to the max
and size will be no constraint having in mind that they will be for permanent installation or forklift/crane moving only
so big FLH's designs generally are louder, more range and better impulse response than TH's
the drawback is the size/weight ?
ic
so ,is there something than can be improved on those Huge FLH horns to squeeze todays drivers to the max
and size will be no constraint having in mind that they will be for permanent installation or forklift/crane moving only
so big FLH's designs generally are louder, more range and better impulse response than TH's
the drawback is the size/weight ?
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