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Author Topic: box size options for a pair of 2241's  (Read 4840 times)

Art Welter

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Re: box size options for a pair of 2241's
« Reply #10 on: February 02, 2016, 11:57:19 am »

Those JBL drivers were designed for a 60Hz kick drum thump.  Trying to make them play low will only cause them to bottom out at much lower levels. 
Stephen,

The 2241 has an FS of 35 Hz, and VAS of 311.5 L (11 cubic feet). It is designed for big boxes that play low, not "for a 60Hz kick drum thump".  As you can see in Peter's simulation, around 60 Hz is where they will "bottom out" (exceed Xmax), unless you have put them in an undersized box tuned to 60 Hz.

Art
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Matthew O'Sullivan

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Re: box size options for a pair of 2241's
« Reply #11 on: February 02, 2016, 03:42:29 pm »

The 2241 is a venerable but high quality sub used in cinema based install subs by jbl for many years. See jblpro.com cinema sub range. Its not really pa based design and certainly not designed for a kick drum. The 2245 goes lower and 2242 goes louder 😊
I just happen to have 2 already that serve a dual role but are carefully managed and never pushed hard. They are not designed for pa, and they only do some dance show with recorded music work. But for that with sx300's they sound nice in a 300-400 seater. If they're eqd right
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Matthew O'Sullivan

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Re: box size options for a pair of 2241's
« Reply #12 on: February 02, 2016, 11:18:24 pm »

I was just hoping someone had tried the 2241 and 2245's in various sized boxes for themselves and had some comments 😊
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Nick Enright

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Re: box size options for a pair of 2241's
« Reply #13 on: February 03, 2016, 11:30:32 am »

I was just hoping someone had tried the 2241 and 2245's in various sized boxes for themselves and had some comments 😊
I had success with the 2245 in an approximately 165L box.

you have to be exact in your tuning and power delivery and duty cycle.

they are good drivers I would go for a balanced box that gets to peak excursion around the same time the driver is soaking a good amount of power. Maybe 2x RMS Pink. At that point the tuning is pretty much set.

I found the best was a tuning at around 32Hz with the box small enough to get the resonance of the box fully controlled. Otherwise you'll get massive resonance at twice the tuning frequency.
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Nick Enright
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Lyve Productions
Detroit, MI

Matthew O'Sullivan

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Re: box size options for a pair of 2241's
« Reply #14 on: February 04, 2016, 06:48:28 am »

Thanks nick ill start there in bassbox and play with that volume + tuning. Going to maybe do a trapezoid style to fit a corner. 
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Re: box size options for a pair of 2241's
« Reply #14 on: February 04, 2016, 06:48:28 am »


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