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
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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
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.
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/1mQuote:
50 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.