http://www.jblpro.com/catalog/genera...?PId=172&MId=2
What?! No one here has one of these yet?
http://www.jblpro.com/catalog/genera...?PId=173&MId=2
and a very robust 12 incher
http://www.jblpro.com/catalog/genera...?PId=296&MId=2
http://www.jblpro.com/catalog/genera...?PId=172&MId=2
What?! No one here has one of these yet?
http://www.jblpro.com/catalog/genera...?PId=173&MId=2
and a very robust 12 incher
http://www.jblpro.com/catalog/genera...?PId=296&MId=2
I'm sorry Mike but those enormous things only go down to 25 Hz. I don't listen to anything above 20 Hz so they are useless. I can't believe JBL is putting out that kind of junk.
You think JBL should be setting goals lower down below 20Hz now since film soundtracks have nice range of exclusive content happen there now. This is no longer the 70’s 80’s 90’s.Originally Posted by 4313B
I'm sorry Mike but those enormous things only go down to 25 Hz. I don't listen to anything above 20 Hz so they are useless. I can't believe JBL is putting out that kind of junk.
Har! I bet they sound great. The beauty of the permanent install models is you can design for sound and (somewhat) size and weight be damned.I'm sorry Mike but those enormous things only go down to 25 Hz. I don't listen to anything above 20 Hz so they are useless. I can't believe JBL is putting out that kind of junk.
Well seem like you’re in touch with your feelings on this issue. Yeah I’m kinder disappointed their not setting their standards higher than this.
Confident seems like they’ve been producing subs within the 20Hz range for years now. I think its time, we saw something different from JBL something starting off around 10Hz would be a nice start.
And it needs to be within $500.00 dollarsfor once because all those over the top prices is really taking the Mickey.
Go out to your car and open and close the door 1 times per second and you have 1hz, you won't hear anything but you can feel the breeze.
I think that I have heard the 12" sub.
No let’s be more reasonable shall we.
$120.00 dollars for the sub and for the box lets be reasonable again shall we. Its Christmas
Funny you should say that because my living room door does only 10Hz when opening it real fast, it shows up on spectrumlab when I use the microphone.Go out to your car and open and close the door 1 times per second and you have 1hz, you won't hear anything but you can feel the breeze.
I think that I have heard the 12" sub.
Well, I've got a pair of its siblings driver-wise: 2242HPL in S1S-EX Synthesis® boxes. In fact, I've heard the ASH6118 with the 2242H SVG at a club in Long Beach, now sadly, too soon out of business. Imagine an octet of those cleanly driving the bottom end of some great dance tracks and club mixes. Unfreakingbelievable! Notice how they scale at the bottom end as you add more units.
I love this:
Maybe if I found a house of worship with these in the sound system I wouldn't be such a heathen--but it probably wouldn't help.For fixed installation applications requiring maximum low frequency output, such as dance-clubs/discotheques, live clubs, performing arts facilities, theatrical sound design, auditoriums, houses of worship, sports facilities and themed entertainment venues.
Out.
in 2007, before the recession almost killed my lil business (I'm in a critical state) I made a design for a club in Punta-Cana having four of those stacked together, among many other JBL goodies.Well, I've got a pair of its siblings driver-wise: 2242HPL in S1S-EX Synthesis® boxes. In fact, I've heard the ASH6118 with the 2242H SVG at a club in Long Beach, now sadly, too soon out of business. Imagine an octet of those cleanly driving the bottom end of some great dance tracks and club mixes. Unfreakingbelievable! Notice how they scale at the bottom end as you add more units.
I love this:
Maybe if I found a house of worship with these in the sound system I wouldn't be such a heathen--but it probably wouldn't help.
However the influx of wordwide tourists dropeed by 50% shortly afterwards so it went dead.
I really don't get this part:
Frequency
Response (±3 dB) : 1 cabinet: 30 Hz – 200 Hz,
2 cabinets: 28 Hz – 200 Hz,
4 cabinets: 26 Hz – 200 Hz
Why does the +-3db changes when you have several cabinets?
Sounds like someone needs to think about frequency and period some more. Opening it really fast pushes the frequency UP. Check it when you open it slowly.
Funny you should say that because my living room door does only 10Hz when opening it real fast, it shows up on spectrumlab when I use the microphone.
BUT, there are some measurement (and pulse generation) problems with this method- 1Hz is basically a pure pressure mode, largely cancelled by the equalization of the wave around the door. And 1Hz is outside the passband for most measurement setups.
If you group the cabinets together the mouth area increases, effectively lowering the LF cutoff. It's common practice to stack LF horns for this purpose, not only this sub, but any horn loaded sub.
I really didn't know that, is this only with horn design or the same with normal boxes if you stack them?
As far as I know it's only with horns because it's the mouth area that really determines the LF cutoff.
With normal bass reflex boxes you have the same 3dB increase in SPL but you don't get more LF extension.
The same principle is used with multicells HF horns, where the total mouth area of each cell combines to extend low frequency response .
Hi Baldrick,
a simple way to calculate the sound radiated by a horn's mouth is to treat it like a piston. A radiating surface (or a piston) does have a "radiation resistance" associated with it, and that basically tells how well the surface can radiate sound.
As a simple example consider a piston in a large baffle. It's radiation resistance begins to drop when the piston's circumference divided by the wavelength of sound is about 2, at a rate which is proportional to frequency squared.
So there is something like a corner frequency for a radiating surface or piston.
If You put several radiating surfaces or pistons close together they will act like a single bigger radiating surface or piston, and that will have a larger circumference. So it will require a larger wavelength of sound (lower frequency) for the above expression to become two (which is where the "corner frequency" is).
This is called mutual coupling.
Ruediger
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