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  1. Replies
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    Both woofers sound good and were frequently...

    Both woofers sound good and were frequently interchangeable in many systems I have owned and heard the 416s and I like them very much. The 515s I have heard but have not not owned. They sounded even...
  2. --------------- Thanks, I am clear on the models...

    ---------------
    Thanks, I am clear on the models and exit dimensions. I should have proofed what I wrote yesterday.

    You bring up and interesting point about swapping diaphragms. I read a number...
  3. You are correct and I made a cut and paste typo. ...

    You are correct and I made a cut and paste typo.
    Let me set it correctly

    The 2451 is 1.5 inch exit and a 4 inch voice coil.
    The 2450 is 2 inch exit and a 4 inch voice coil.

    I will try and...
  4. No, I am saying the lower frequencies require...

    No, I am saying the lower frequencies require greater excursion. So normally one would use a 2 inch driver (not the 1.5 inch) if you wanted to cross lower. If all other things are equal (seldom...
  5. I had forgotten the phase plugs were similar (at...

    I had forgotten the phase plugs were similar (at least in design). So are you suggesting either diaphragm in the 2446 would perform similarly? Since 1.5 inch horns are usually crossed at a higher...
  6. 2446 with SL diaphragms for 2450 or 2451. Choice?

    I have confused myself again.

    I am using 2446H drivers and would like to experiment with different diaphragms. The Truextent Be diaphragms are too expensive ($950 each).

    However, some you...
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    -------- I understand what you are trying to get...

    --------
    I understand what you are trying to get at and I understand the concepts of force and energy (I like to think of energy as work or force x distance). But we are getting away from the...
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    ______________ I understand the goal of a...

    ______________

    I understand the goal of a rigid frame, however I am still trying to get my mind around the notion of "where is the energy going"? The major portion is of course going to the cone,...
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    ".... Here's a picture of the K2s woofer...

    "....
    Here's a picture of the K2s woofer mounting plate - notice there is no gasket. But the cabinet is heavily braced.
    ...."

    Thanks for the picture. I am surprised.
    Even if it wasn't for...
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    ---------------- You are correct. I will add...

    ----------------

    You are correct. I will add that the terms coupling, dampening, and MDF vs plywood, will always cause a thread to deteriorate.

    I try and keep it simple in my mind. I am...
  11. Replies
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    De-coupling woofer from baffle

    Recently I have become concerned about mounting a woofer (in my case a 15 inch 2216nd) to the baffle. The concern is obvious: transfer of motion of the woofer frame to the baffle of the cabinet.
    ...
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    Getting back on track....... POS, thanks for...

    Getting back on track.......

    POS, thanks for your perspective and advice. I do have some room to hide some sound absorption panels behind the drapes.
  13. Replies
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    M2's in a smallish room?

    These are my Klipsch Jubilees in my current living room, 12 ft (3m) wide and 24 ft (7m) deep and an 8 ft ceiling (typical of an American house). The Jubilees (with that big K-402 horn) are a constant...
  14. Thanks for pointing me in that direction. The OEM...

    Thanks for pointing me in that direction. The OEM versions of the 2450SL diaphragms are certainly affordable ($85-95 each). However, I am confused about a couple of things, as applied to using them...
  15. BE Diaphragms for 2445/2446 drivers - EXPENSIVE

    I got a bit of a shock yesterday. I remember when the aftermarket BE diaphragms from Truexent for a 2445/2446 JBL were about $500-600 (USD). A nice upgrade and within reach.

    Those days are gone....
  16. Replies
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    What a stunning project. Your craftsmanship and...

    What a stunning project. Your craftsmanship and attention to detail is remarkable. Enjoy them!:applaud:
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    Congratulations on your JBLs. At this point I...

    Congratulations on your JBLs. At this point I would do absolutely nothing. Just enjoy them for next several weeks. Go ahead and adjust and fine tune speaker placement (and chair placement), but just...
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    I am not sure what your skill set is (or with the...

    I am not sure what your skill set is (or with the help of a friend). Could you build a "cage" with the same footprint as the bass bin. Then cover the cage with grille cloth. Probably a number of ways...
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    Congratulations on your success. The cabinets...

    Congratulations on your success.
    The cabinets are stunning and your attention to details is superb.
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    What happened ... please tell all

    Yes, this is an older thread, but an interesting one.

    Did many, or any, of these projects come to fruition?
    I am guessing folks probably used ported cabinets with internal volumes between...
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    [QUOTE=Ian Mackenzie;414360]I agree it is odd. ...

    [QUOTE=Ian Mackenzie;414360]I agree it is odd.

    I did a simulation in bass box .

    After you subtract the bracing , drivers and horn then allow for fibreglass the net value is around 130 L.
    ...
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    Thanks for the attachment. I may have come...

    Thanks for the attachment.

    I may have come across it before when I was first researching this. I am not trying to pick a fight with whoever created it, but there are some things that don't make...
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    Thanks for your input. The rule of thumb that...

    Thanks for your input.

    The rule of thumb that I had heard was that the vent tuning should not be less than about 75% of the free air resonance (IOW, about 25 Hz). Going below this, one would...
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    Vent tuning on M2

    I ordered a pair of the 2216nd woofers for my new build (2way vented cabinet with a horn tweeter). They finally arrived.

    For the bass bin, two obvious candidates to model are the M2 and s-4700,...
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    Thanks for your input. The 2216nd's did end up...

    Thanks for your input. The 2216nd's did end up being my choice and I ordered them a few days ago. They arrived today and these woofers are amazingly light. I am used to 15 inch drivers that have some...
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