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Dave Zan
07-08-2005, 10:29 PM
I have a pair of 2226s (+ mids and tweeters not relevant)
Auditioned them with 2245 subs and it sounded better.
Damn - now I have to buy 2245s and add them!
Initially my idea was just to have the 2226s in the JBL recommended 5 cubic foot ported boxes and add ported 2245 cabinets.

I now wonder - since the 2245s can easily handle up to a couple of hundred Hz whether I can now optimize the 2226s because I don't have to try to tune down to 40Hz. My first idea is maybe sealed boxes for the 2226s.
Anyone here have any recommendation?

TIA

johnaec
07-08-2005, 10:42 PM
Optimal size sealed box size is 1.234 cu.ft. This gives a -3db of 98hz, and the group delay is exceptional at under 3 ms. below 100hz, 1 ms. at 200hz, and almost nonexistant above that. 'Should work very well in combination with 2245's.

John

Zilch
07-08-2005, 10:48 PM
Plug it in to WinISD for both options. The optimum box sizes are small....

Dave Zan
07-08-2005, 11:01 PM
The optimum box sizes are small....
Hm. That could free up some space - and I could have several 2245s!

arrgh5
07-11-2005, 10:54 AM
Can someone explain how the "35-1,8 khz" at +/- 3db is possible with the

http://www.jblproservice.com/pdf/Sound%20Power%204700%20Series/4745A.pdf

(2 x 2226h) ?

Group delay must be astronomic high.

I had/have 4745. They may be a little bit slower than my 4715 but they
still have enourmos punch. The sound is hmm, "juicier".

Robh3606
07-11-2005, 11:42 AM
That 35 s/b a 45Hz. Take a look at a pair in 8 cubic ft. 40Hz box

Rob:)

arrgh5
07-11-2005, 12:23 PM
I know, -3 db at 35 hz seems unreachable. But the difference between the
4715 (-10 db at 40 hz) and the 4745 is audible. Goes lower.

Mr. Widget
07-11-2005, 12:29 PM
Can someone explain how the "35-1,8 khz" at +/- 3db is possible...

Placed in the corner of a concrete bunker perhaps?http://audioheritage.org/vbulletin/images/smilies/applaud.gif

Also the spec is +/- 3dB.... that can be loosely taken to mean -6dB at 35Hz. For this PA stuff they may use a looser set of specification guidelines.

Widget

Fred Sanford
07-14-2005, 12:23 PM
I have a 2245H that a friend was looking to sell, if anyone's looking for one I'll peek in the box and give details on it.


je