As expected for some time a new studio Sub has been done from the all mighty 2269h woofer
it is nice to see it come out
it is a big box 10.5 aprox cubic feet 300 liter internal volume
back to basics
As expected for some time a new studio Sub has been done from the all mighty 2269h woofer
it is nice to see it come out
it is a big box 10.5 aprox cubic feet 300 liter internal volume
back to basics
I like the industrial appearance. Especially the screwed in ports. All business. I want some! I wonder if they're available aftermarket?
Warren
DIY Array, 2242 sub, 4408, 4208, Control 8SR, E120 Guitar cab, Control 1, LSR305.
It really didn't look that big but I see you are correct, I imagined it was aprox 8 cu ft.
I wonder why the box is that big, especially since the 2269H also are used in smaller cinema boxes with lower tuning (-10db@18hz)
Don't know about aftermarket but there's one here:
http://www.ebay.com/itm/JBL-2269H-Us...4AAOSwLVZV302V
Maybe it's time to upgrade my IB.
I have a question regarding the SUB18 I hope someone can help me with.
The sensitivity is rated to 92db@1w. If I see the "installation version" which uses 2269h as well, its rated at 96db@1w (http://www.jblpro.com/www/products/i...8#.V-PmT_mLRhF)
Do you know why there is such a difference in specs? 4db lower sensitivity require more than double the amplifier power, so it's a large difference.
I guess it is a modified cone/suspension, because it goes lower. A bit like the Revel sub (with a 2269H motor) modified cone/suspension...
92dB is probably the sensitivity of the 2269H in the LF range.
Think of the 2242H vs 2245H: the 2242H is supposed to have a higher sensitivity, but LF sensitivity is about the same as the 2245H and it only starts to rise above that range.
When used in a 4645 variant with the correct EQ settings (cutting that midrange boost) both the 2245 and 2242 can be considered as having the same sensitivity.
DIY Array, 2242 sub, 4408, 4208, Control 8SR, E120 Guitar cab, Control 1, LSR305.
I suppose it depends on what you call VLF, and also what you call sensitivity (can be at lowest impedance, at a given reference frequency, on average in a given range, 2Pi vs 4Pi, etc.).
example : http://www.jblpro.com/www/products/c...c#.V-QU-jURm5I
In the intended 30Hz-80Hz range it will be closer to 95dB/1w/1m50 Hz to 500 Hz; 99 dB, 1W @ 1m
40 Hz to 100 Hz; 97 dB, 1W @ 1m
And of course a different alignment targeted for a different bandwidth will result in a different sensitivity down low.
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