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Reload Thread: Sundown 6.5 Subwoofer Project

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    Sundown 6.5 Subwoofer Project



    Little project I've been working on for a while... first prototype rolled out yesterday. It about 4 1/8" deep -- power handling and other specs will be announced once we finalize the coil (several variations will be tested).

    Every part was custom tooled; frame, diaphragm, dust cap, spider, surround, etc, etc. It also features an aluminum pole cap to lower distortion even further.

    Stay tuned for more information as it becomes available =)



    - Jacob Fuller
    - Owner, Sundown Audio
    - Associate, Stereo Integrity

    - I DO NOT USE PMs ON HERE -- Please e-mail me!
    - E-MAIL is sundownz@sundownaudio.com
    Simon Eichenberger is THE MAN.

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    Re: Sundown 6.5 Subwoofer Project

    Nice I like....



    Coming soon!!!!!!!!!!!!!!!!!!!

    Bought From : CrazedCat, motley, the727kid, JJones, TheLow, adas, Goindeaf, Reflecting,93dakota

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    Re: Sundown 6.5 Subwoofer Project

    I'll take 2, for my standard cab ranger. Please.



    Traded with-Bassin' Buick traded with hispls(2 times)bought from schackel. Sold to bettr n' revrse. Sold to evilkefz.

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    Re: Sundown 6.5 Subwoofer Project

    Awesome.



    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: Sundown 6.5 Subwoofer Project

    I also meant to say COPPER shorting cap as well -- I mis-typed on the forums (got it right on the Facebook post).



    - Jacob Fuller
    - Owner, Sundown Audio
    - Associate, Stereo Integrity

    - I DO NOT USE PMs ON HERE -- Please e-mail me!
    - E-MAIL is sundownz@sundownaudio.com
    Simon Eichenberger is THE MAN.

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    Re: Sundown 6.5 Subwoofer Project

    We did go with a 2" coil on it as well -- which is a bit different from
    most 6.5" sub-woofers. Plus the aluminum diaphragm will also soak up
    some heat as well. Thermally it will be very robust; power handling will
    be more related to mechanics. The flat piston diaphragm opened up a
    good bit more usable x-mech up top for us -- but I won't be going overly
    stiff with it as I want a reasonable Qts and Fs from it.



    - Jacob Fuller
    - Owner, Sundown Audio
    - Associate, Stereo Integrity

    - I DO NOT USE PMs ON HERE -- Please e-mail me!
    - E-MAIL is sundownz@sundownaudio.com
    Simon Eichenberger is THE MAN.

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    Re: Sundown 6.5 Subwoofer Project

    Quote Originally Posted by sundownz View Post
    I also meant to say COPPER shorting cap as well -- I mis-typed on the forums (got it right on the Facebook post).
    is it a dedicated subwoofer, or meant for midbass in a door panel? either way I like it, and on a side note, do you guys to tours of the shop? im headed down to N.C. in a week, and it was on my list of things to see...




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    Re: Sundown 6.5 Subwoofer Project

    Quote Originally Posted by DbDesigns View Post
    is it a dedicated subwoofer, or meant for midbass in a door panel? either way I like it, and on a side note, do you guys to tours of the shop? im headed down to N.C. in a week, and it was on my list of things to see...
    interested in this as well.




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    Re: Sundown 6.5 Subwoofer Project

    It's designed as a dedicated sub-woofer ; I'll post the full response of it up when we finalize the coil, though, as it should be useful as a mid-bass as well.

    We don't do a whole lot for tours; if someone stops in to pick something up and we aren't slammed we can show them a few cool things, of course.



    - Jacob Fuller
    - Owner, Sundown Audio
    - Associate, Stereo Integrity

    - I DO NOT USE PMs ON HERE -- Please e-mail me!
    - E-MAIL is sundownz@sundownaudio.com
    Simon Eichenberger is THE MAN.

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    Re: Sundown 6.5 Subwoofer Project

    That is ****.

    Any idea of a round-a-bout number for power handling?




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    Re: Sundown 6.5 Subwoofer Project

    Quote Originally Posted by sundownz View Post
    It's designed as a dedicated sub-woofer ; I'll post the full response of it up when we finalize the coil, though, as it should be useful as a mid-bass as well.

    We don't do a whole lot for tours; if someone stops in to pick something up and we aren't slammed we can show them a few cool things, of course.
    dang, i need a recone, could it be built in a week? lol




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    Re: Sundown 6.5 Subwoofer Project

    I'll be sure to do videos when it arrives here for sure; right now we are doing testing at our factory with various coils to determine which configuration we move forward with testing here. It looks like CCAW as of now. I'll see about getting a video done at the factory as well so we can see it playing sooner smile.png

    Here are specs with very little play time on the CCAW version :

    Re : 2.9 ohms
    Le : 0.44 mH
    Fs : 44 Hz
    Sd : 105.6 cm^2
    BL : 11.282 TM
    Qms : 8.7
    Qts : 0.43
    Qes : 0.46
    Vas : 2.816 L
    Cms : 117 uM/N
    Mms : 75g
    Sens : 79.1 dB 1w/1m

    Ported box of 0.3 - 0.35 cubes tuned to 35-40 Hz looks very good.

    -----

    A few common questions :

    1) Power handling is pending extended testing. The coil is about the
    same size as what we use in the SA-8 v.2 but is CCAW rather than copper.
    We will be mechanically limited on the rating.

    2) The motor is 126mm and the cut-out is 140mm so there is wiggle room.
    The only question is how easy it will be to mount with the terminals and
    wire; will be doing some test-fitting when it arrives. We can still
    tweak it as we did CNC frames for testing before making the mold.

    3) The top-end response is pending a response graph which we should have this week.

    4) Linear x-max is expected to be around 15mm one-way and we have close
    to an inch one-way of x-mech for the soft parts and a few mm of padding
    in the motor so the coil cannot bottom out.



    - Jacob Fuller
    - Owner, Sundown Audio
    - Associate, Stereo Integrity

    - I DO NOT USE PMs ON HERE -- Please e-mail me!
    - E-MAIL is sundownz@sundownaudio.com
    Simon Eichenberger is THE MAN.

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    Re: Sundown 6.5 Subwoofer Project

    Few more pics for you guys :


    * You can see the copper cap on the pole as well as the main diaphragm which is made from aluminum. This driver features a rubber surround as well which was chosen to help hit our FS target.


    * It's finished off with an aluminum dust cap as well. So the whole front of the driver helps shed some of the heat. This is in addition to the CNC slits all around the bottom of the basket as well.



    - Jacob Fuller
    - Owner, Sundown Audio
    - Associate, Stereo Integrity

    - I DO NOT USE PMs ON HERE -- Please e-mail me!
    - E-MAIL is sundownz@sundownaudio.com
    Simon Eichenberger is THE MAN.

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    Re: Sundown 6.5 Subwoofer Project

    This lil bastard has to weigh close to 12lbs....haha



    SSgt. Jason Nelson
    Andrews AFB, MD USAF

    Dealt with audiobahn, sangthing, 93 saturn sl2, basswiigee, goodstuff, HomeGrown, 06gtmike
    HU: Clarion NX501 Nav Deck
    Amps: C2 Audio Recon 1.6, Sundown SAX50.4
    Speakers: MB Quart ONX216 Components - 2 full sets
    Subwoofer: C2 Audio Threatcon 4 V1 12"
    Wire/Battery: SHCA 1/0 OFC--Shuriken BT-80 and Shuriken BT-35
    Alternator: Mechman 320 amp

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    Re: Sundown 6.5 Subwoofer Project

    I want this so bad...




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