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Thread: dimensions / plans / blueprints for 4641

  1. #1
    Senior Member Eaulive's Avatar
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    dimensions / plans / blueprints for 4641

    Hello.
    Does anybody have the building plans for the 4641 cabinet? The datasheet say 225l tuned to 25 Hz but I would like to build it as close possible as the originals, especially the port and inner bracings.

    My avatar: 4520 loaded with 2225H on E140 frames,
    1x B&C 12PE32 on custom front loaded horn, 2x 2426 on 2370.

  2. #2
    Senior Member Don Mascali's Avatar
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    I have both the 4641 and the 4645C. They are the same cabinet and differ only by the driver installed. There is some information on 4645C on the Forum that provides measurements and some construction details that were provided by members including my self.
    I will attempt to answer any questions you have after you read that info.
    Good luck with your project they are incredible subs.

    Here are a couple of JBL links;

    http://www.jblpro.com/pub/cinema/4641.pdf

    http://www.jblpro.com/catalog/genera...x?FId=35&MId=1
    4406, 4412A, L100, L100t3 (3 pair), L1, L7, 4645C, 4660A, 4695B, SR4735 and various DIY JBL Pro loaded systems.

  3. #3
    Senior Member Don Mascali's Avatar
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    4406, 4412A, L100, L100t3 (3 pair), L1, L7, 4645C, 4660A, 4695B, SR4735 and various DIY JBL Pro loaded systems.

  4. #4
    Senior Member Eaulive's Avatar
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    Very nice, Thanks!
    My avatar: 4520 loaded with 2225H on E140 frames,
    1x B&C 12PE32 on custom front loaded horn, 2x 2426 on 2370.

  5. #5
    Senior Member Lee in Montreal's Avatar
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    Hey Eaulive. Why not build a 4688 with your newly aquired 2241? They will do well with the 4520s

  6. #6
    Senior Member Eaulive's Avatar
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    Quote Originally Posted by Lee in Montreal View Post
    Hey Eaulive. Why not build a 4688 with your newly aquired 2241? They will do well with the 4520s

    mmmmh, I don't know, if it would be that good, they would still make it.
    I never like those designs, it makes me think of a "one note wonder" boom box. Maybe I'm wrong.

    Besides, this muther is ginormous!
    My avatar: 4520 loaded with 2225H on E140 frames,
    1x B&C 12PE32 on custom front loaded horn, 2x 2426 on 2370.

  7. #7
    Senior Member Lee in Montreal's Avatar
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    It depends on what you need. If you only want 25 to 50Hz to help the pair of 4520 scoops, then I would go with a TCB. If you want stand alone bass bins that cover 30 to 200 Hz, the sure, the 4641 would be better. BTW I can lend you my 1800 Gti to test against your 2241. They share the same basket and motor. I suspect the 1800Gti to be less musical but more bass heavy.

    GTI 1800

    Mechanical parameters
    Fs = 30hz
    Qms = 6,77
    Vas = 362,46 Liters
    Cms = 0,158 mm/N
    Mms = 178,141 grams
    Rms = 4,96 kg/sec
    Xmax = 7,62 mm
    Sd = 1271 sq.cm
    Dia = 40,2 cm

    Electrical parameters
    Qes = 0,456
    Re = 2,5 ohms
    Le = 1 mh
    Z = 4 ohms
    BL = 13,6 N/A
    Pe = 600 Watts

    Kombination parameters
    Qts = 0,43
    n* = 2,07%
    Sens = 96,3 (1 Watt)

  8. #8
    Senior Member Eaulive's Avatar
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    I plan to make a good, musical and accurate sub for music and movies, probably to coupled with more living room friendly speakers than the 4520 are
    My avatar: 4520 loaded with 2225H on E140 frames,
    1x B&C 12PE32 on custom front loaded horn, 2x 2426 on 2370.

  9. #9
    Member peteracing's Avatar
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    Eaulive, do you really think you need more bass!? ( Eaulive demoed me his 4520's driven with his Crown'sssssss) and my eardrums foams suspensions (rotten) clearly need to be changed now ...
    Thanks for the demo, fantastic settup !.

  10. #10
    Senior Member Eaulive's Avatar
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    Quote Originally Posted by peteracing View Post
    Eaulive, do you really think you need more bass!? ( Eaulive demoed me his 4520's driven with his Crown'sssssss) and my eardrums foams suspensions (rotten) clearly need to be changed now ...
    Thanks for the demo, fantastic settup !.
    So you liked it hey? the ringing in my ears finally subsided a few hours later, I'm not used to this anymore
    My avatar: 4520 loaded with 2225H on E140 frames,
    1x B&C 12PE32 on custom front loaded horn, 2x 2426 on 2370.

  11. #11
    Senior Member Eaulive's Avatar
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    Quote Originally Posted by Don Mascali View Post
    Thanks Don, I actually have a question here: http://www.audioheritage.org/vbullet...l=1#post324570
    My avatar: 4520 loaded with 2225H on E140 frames,
    1x B&C 12PE32 on custom front loaded horn, 2x 2426 on 2370.

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