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    Underhung TC Nomz

    Been after one of these for years, finally got a pair.











    Quote Originally Posted by audioholic View Post
    Saying "clipping doesn't kill speakers" is a half-truth at best. Technically no, clipping itself does not hurt the speaker. But in clipping your amp, you can easily create a situation that WILL kill the speaker. Was the squared waveform the DIRECT cause of the failure? No. In the end, the answer is, always has been, and can only be... heat kills speakers. BUT, clipping increases heat generation, sometimes by a drastic amount. So to start a thread simply to state that clipping does not hurt speakers is, again, a half-truth at best.

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    Re: Underhung TC Nomz




    Gimme!

    What's the model/name of those motors?



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/578701-1999-chevrolet-blazer.html

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    Re: Underhung TC Nomz

    fapfapfap



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    Re: Underhung TC Nomz

    Dem some nice woofers

    ---------- Post added at 12:02 AM ---------- Previous post was at 12:02 AM ----------

    xmax?



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    Re: Underhung TC Nomz

    Quote Originally Posted by gckless View Post



    Gimme!

    What's the model/name of those motors?
    It's basicaly a beefed up MASS able to drive the shit out of a port (MASS drivers were designed for sealed applications). A nice 10 layer flatwind with a Kapton former, nice and light to stay snappy tight.

















    Quote Originally Posted by audioholic View Post
    Saying "clipping doesn't kill speakers" is a half-truth at best. Technically no, clipping itself does not hurt the speaker. But in clipping your amp, you can easily create a situation that WILL kill the speaker. Was the squared waveform the DIRECT cause of the failure? No. In the end, the answer is, always has been, and can only be... heat kills speakers. BUT, clipping increases heat generation, sometimes by a drastic amount. So to start a thread simply to state that clipping does not hurt speakers is, again, a half-truth at best.

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    Re: Underhung TC Nomz

    Quote Originally Posted by ciaonzo View Post
    It's basicaly a beefed up MASS able to drive the shit out of a port (MASS drivers were designed for sealed applications). A nice 10 layer flatwind with a Kapton former, nice and light to stay snappy tight.














    Ahh ok. What are the advantages/disadvantages of a coil that short?



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/578701-1999-chevrolet-blazer.html

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    Re: Underhung TC Nomz

    Quote Originally Posted by gckless View Post
    Ahh ok. What are the advantages/disadvantages of a coil that short?
    I was just going to ask that. It is very unusual.

    I would guess that with triple stacked magnets and high Xmech, the coil needs not be so long. It's probably the same amount of wire found in the usual 4 layer 2.5" DVC subs, but compressed........with 10 layers.



    All day I'm clippin'
    voltage be dippin'
    I don't give a damn,
    cause my trunk always hittin'!

    creating a proper sound wave. Step one, turn it up until clipping. Step two, done.

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    Re: Underhung TC Nomz

    Quote Originally Posted by gckless View Post
    Ahh ok. What are the advantages/disadvantages of a coil that short?
    Underhung is usually intended for very low distortion applications. Obviously, there's much less moving mass and inductance so very good for wide bandwidth use. BL is more linear than overhung so THD stays very low, but it's like a brick wall when it's done.




    Quote Originally Posted by audioholic View Post
    Saying "clipping doesn't kill speakers" is a half-truth at best. Technically no, clipping itself does not hurt the speaker. But in clipping your amp, you can easily create a situation that WILL kill the speaker. Was the squared waveform the DIRECT cause of the failure? No. In the end, the answer is, always has been, and can only be... heat kills speakers. BUT, clipping increases heat generation, sometimes by a drastic amount. So to start a thread simply to state that clipping does not hurt speakers is, again, a half-truth at best.

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    Re: Underhung TC Nomz

    Quote Originally Posted by ciaonzo View Post
    Underhung is usually intended for very low distortion applications. Obviously, there's much less moving mass and inductance so very good for wide bandwidth use. BL is more linear than overhung so THD stays very low, but it's like a brick wall when it's done.

    Ok. I understood the reason behind underhung, guess I just never seen a flux diagram with an underhung motor. So, with the shorter coil, the entire coil should stay within the main motor force area (don't know what that's called ) throughout the full stroke? As opposed to a longer coil that would have part of the coil inside, part of the coil outside on each side of it's stroke. What are the differences there?



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/578701-1999-chevrolet-blazer.html

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    Re: Underhung TC Nomz

    Quote Originally Posted by gckless View Post
    Ok. I understood the reason behind underhung, guess I just never seen a flux diagram with an underhung motor. So, with the shorter coil, the entire coil should stay within the main motor force area (don't know what that's called ) throughout the full stroke? As opposed to a longer coil that would have part of the coil inside, part of the coil outside on each side of it's stroke. What are the differences there?
    In underhung the coil stays within the gap through the whole stroke. Original RE XXX was underhung and AFAIK MT was as well. More often used in midrange. You save mass for sure and get a very even BL curve until the coil leaves the gap. As OP stated, they're great until you get into big excursions. Big downside from manufacturing standpoint is you need a big arse top plate.




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    Re: Underhung TC Nomz

    damm those are nice,what do these run?what kind of power do they like?



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    Re: Underhung TC Nomz

    Nice find ciaonzo! I almost picked up a SVS proto with the same motor.
    Wish I had picked it up now ;(



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    Re: Underhung TC Nomz

    Pretty sweet ; I am doing an under-hung project too w/ 60mm TP / 25mm coil / full copper pole sleeve.

    Have always had a soft spot for the under-hung design -- used to have a prototype TC Sounds unit as well with that same gap treatment, it got down big time and sounded great.



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    Re: Underhung TC Nomz

    Since this has the copper ring on the inside, doesn't that classify it as an xbl2 motor?



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    Re: Underhung TC Nomz

    XBL has to do with grooves on the top plate and pole :




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