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    I prefer the Allen key to the Fillister head...

    I prefer the Allen key to the Fillister head because I feel there is more opportunity/possibility to put the screwdriver (pressing down) through the surround than an Allen key (turning laterally)...
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    Thanks. Then a couple of these should do the...

    Thanks.

    Then a couple of these should do the trick.

    https://www.parts-express.com/parts-express-cast-frame-10-32-speaker-mounting-kit--260-776
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    Mounting Screws for a 2241

    I'm doing some work on the Merman cabinets and noticed that builder used wood screws to hold the 2241s. :eek: I want to change these to Allen keys/Tee-nuts. What is the better fit 1/4-20 or 10-24?...
  4. Your wind is our fires!

    Your wind is our fires!
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    No real noticable difference on the RTA. (Maybe...

    No real noticable difference on the RTA. (Maybe 1 dBA reduction between the suck-out and peak.)


    But the increased cabinet volume, though small, would help and there is the...
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    Knocked His Block Off

    The Mermans do females great, but there is a suck-out at 250 Hz, with a dip below and peaks above and below the dip that affects male voices. I attribute most of this to the cabinets that are made...
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    JBL 2241H 18" in 7.5 cu ft, JBL 2251J 10" in .75...

    JBL 2241H 18" in 7.5 cu ft, JBL 2251J 10" in .75 cu ft, Heil AMT with my own design "phase plug", home brew crossover with Audyn Q4 caps and 16 gauge air core chokes.
    ...
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    She Was Literally Brought to Tears!

    We have a 21 year old UCI student that comes to the house three hours a day to help out. The other day she was wearing a Taylor Swift Tour tee-shirt and I asked if she listened to music.

    She said...
  9. My understanding is that on-axis lobing is not an...

    My understanding is that on-axis lobing is not an issue so long as the drivers are located within 1/4 wavelength of each other. A 1kHz tone is ~1 foot, so 1/4 wavelength is ~3 inches. So as long as...
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    Not original and the 136 actually goes a bit...

    Not original and the 136 actually goes a bit lower, but falls off a bit sooner.

    But, there really are no 136 cones left so, there is what there is.

    If you put a 136 and 2235 on the bay, both in...
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    Not an "upgrade" :no:

    Not an "upgrade" :no:
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    I felt the 2241 was too loud so now use a 20 ohm...

    I felt the 2241 was too loud so now use a 20 ohm parallel resistor to reduce the volume and made changes to the crossovers to compensate accordingly.

    2241 is now crossed at ~320-325 Hz and better...
  13. Thread: K151 vs E155

    by toddalin
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    Higher impedience will also have a higher BL. ...

    Higher impedience will also have a higher BL. The BL is a measure of the "control" of the woofer movement with higher being tighter.

    One benefit of 4 ohm is that SS amps will make more power into...
  14. Visibly, there is a difference in the thickness...

    Visibly, there is a difference in the thickness between a D130 and a 130A so they do not use the same cones, even as replacements. (There are also internal differences such as wire material.)
    ...
  15. Thanks, I will give it a read. I am well...

    Thanks, I will give it a read. I am well familiar with Larson-Davis and have used their sound level meters on several occasions dating back to the early 90s actually purchasing one for the company I...
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    https://youtu.be/bRBoF1todWw

    https://youtu.be/bRBoF1todWw
  17. The Missing Measurements..., Coming to a Magazine Near You..., Possibly

    Some people like to play their music loud. https://www.audiokarma.org/forums/styles/default/xenforo/smilies/cuernos.gif

    So, how would one know how loud a speaker will play, without distorting, if...
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    I made some changes to bring in the 200-400 Hz a...

    I made some changes to bring in the 200-400 Hz a bit more and remove a bit (~2 dB) of the bass.


    https://youtu.be/x0Ry39rlaPM


    https://youtu.be/2CPK0n6Nw40
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    I've also found that "flat" may not be the most...

    I've also found that "flat" may not be the most musical nor the most intelligible. While the overall curve should decline slightly, I like a bit of "brightness" in the 1-4 kHz area and it only...
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    The Merman's do something I've not really been...

    The Merman's do something I've not really been able to hear other speakers do and it has to do with imaging. YouTube does not (maybe cannot) convey this....
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    Oh Yeah! https://youtu.be/sk-h7OyfSGU ...

    Oh Yeah!


    https://youtu.be/sk-h7OyfSGU

    http://www.audioheritage.org/photopost/data//500/medium/ScreenHunter_250_Jul_13_11_47.jpg
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    I would suggest that you be very careful handling...

    I would suggest that you be very careful handling the "horseshoe" clips. While they are silver grey in color, they are ferrous and will be drawn toward the magnet, right though the diaphragm, and...
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    :) ...

    :)

    http://www.audioheritage.org/photopost/data//500/medium/DSC_00251.JPG
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    Have you any idea what an original tangential...

    Have you any idea what an original tangential diaphragm would cost..., if you could even find one?

    Tell the seller that the damaged diaphragm would cost as much/more than you paid for the...
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    Current State of the Mermans

    This is the current crossover configuration. Unconventional, but it seems to work well.

    http://www.audioheritage.org/photopost/data//500/medium/ScreenHunter_249_Jun_27_12_34.jpg

    And this is...
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