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    Altec 414-16C feePay BIN 250


    Alien_Shore's Avatar
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    Re: Altec 414-16C feePay BIN 250

    those look niiiice from the rear!
    - Mike

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    Re: Altec 414-16C feePay BIN 250

    Quote Originally Posted by Alien_Shore View Post
    those look niiiice from the rear!
    I've had that thought many times...oh, sorry, you were meaning the speakers....
    Your neighbors called. They like your music.

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    Altec 414-16C feePay BIN 250


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    Re: Altec 414-16C feePay BIN 250

    I've seen different magnet configurations on 414s. Are these the Alnico or ceramic version?

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    Re: Altec 414-16C feePay BIN 250

    Quote Originally Posted by alancohen View Post
    I've seen different magnet configurations on 414s. Are these the Alnico or ceramic version?
    Same cast return pot as used on the 416-8B. The big question is "does it use the same size alnico slug as the 416?". I'd really like a supported answer to that question.
    Not all vegetables make good leaders.

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    Altec 414-16C feePay BIN 250


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    Re: Altec 414-16C feePay BIN 250

    Quote Originally Posted by bowtie427ss View Post
    Same cast return pot as used on the 416-8B. The big question is "does it use the same size alnico slug as the 416?". I'd really like a supported answer to that question.
    Noperoonie.

    2.4 pounds 416B

    416-8B

    1.8 pounds 416c

    http://www.google.com/url?sa=t&rct=j...42452523,d.dmQ

    If the magnet was kept the same would have been a substantial mid band gain as the 414 has lower moving mass. See someone who knows what they are talking about, say like GM, if you want a better answer.

    416-8B
    Your neighbors called. They like your music.

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    Senior Hostboard Member bowtie427ss's Avatar
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    Re: Altec 414-16C feePay BIN 250

    Thanks OG, i never thought to look for it on the GPA site.

    Someday we really need to condense a library with all this stuff in a single location.

    I would have guessed they used the same mag slug as earlier 414's based on the sensitivity of the systems using them. But, i hate guessing since that usually fails when it's important.

    If the magnet was kept the same would have been a substantial mid band gain as the 414 has lower moving mass.
    Aaaaaaahhhhh, this is why we don't recone 417H as a 414.

    Would a solution be as simple as adding mass to bring the 414 cone weight up to that of the 416 assembly?
    Not all vegetables make good leaders.

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    Re: Altec 414-16C feePay BIN 250

    You are correct that 417 has the 416 assembly

    If you want to get some insight set up a box design in say Winisd


    Then:


    Sd - Projected area of the driver diaphragm, in square metres.
    Mms - Mass of the diaphragm/coil, including acoustic load, in kilograms. Mass of the diaphragm/coil alone is known as Mmd
    Cms - Compliance of the driver's suspension, in metres per newton (the reciprocal of its 'stiffness').
    Rms - The mechanical resistance of a driver's suspension (i.e., 'lossiness') in N?s/m
    Le - Voice coil inductance measured in millihenries (mH) (Frequency dependent, usually measured at 1 kHz).
    Re - DC resistance of the voice coil, measured in ohms.
    Bl - The product of magnet field strength in the voice coil gap and the length of wire in the magnetic field, in tesla-metres (T?m).


    Play with Mms and Bl and view the resulting responses

    I would like to see what a 417 assembly could do with a higher mass kit, like a 3154. There may be issues with gap length. One of the 3 million things I likely will never get done.
    Your neighbors called. They like your music.

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