PDA

View Full Version : Sundown 6.5 Subwoofer Project



sundownz
06-05-2013, 10:05 AM
http://www.sundownaudio.com/misc/protos/X-6.5SW/2013-06-05%2015.47.23.281_x.jpg

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 =)

Silver-N-Black
06-05-2013, 10:07 AM
Nice I like....

chevyaddict83
06-05-2013, 10:10 AM
I'll take 2, for my standard cab ranger. Please.

ciaonzo
06-05-2013, 10:34 AM
Awesome.

sundownz
06-05-2013, 10:55 AM
I also meant to say COPPER shorting cap as well -- I mis-typed on the forums (got it right on the Facebook post).

sundownz
06-05-2013, 11:09 AM
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.

RangerDangerV2
06-05-2013, 11:10 AM
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...

Fattony911
06-05-2013, 11:14 AM
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.

sundownz
06-05-2013, 11:18 AM
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.

tat2bass
06-05-2013, 11:24 AM
That is ****.

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

RangerDangerV2
06-05-2013, 11:26 AM
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

sundownz
06-06-2013, 08:58 AM
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.

sundownz
06-06-2013, 09:08 AM
Few more pics for you guys :

http://www.sundownaudio.com/misc/protos/X-6.5SW/2013-06-05%2015.46.36.767_x.jpg
* 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.

http://www.sundownaudio.com/misc/protos/X-6.5SW/2013-06-05%2018.04.43.139_x.jpg
* 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.

jasonbillnelson
06-06-2013, 09:26 AM
This lil bastard has to weigh close to 12lbs....haha

Fattony911
06-06-2013, 10:10 AM
I want this so bad...

ciaonzo
06-06-2013, 10:35 AM
Beautiful. Loving the copper in the motor, the throw potential, the diaphragm material, the rubber surround.... everything.

I will own some of these.

Phoenix Risen
06-06-2013, 11:00 AM
im pretty interested in a free air response, would love to see what these would do in some doors...

sundownz
06-07-2013, 11:26 AM
Got the response graph in; could be very useful as a mid-bass as well :)

http://www.sundownaudio.com/misc/protos/X-6.5SW/CCAW_Response_Curve.jpg

ciaonzo
06-12-2013, 03:55 PM
Got the response graph in; could be very useful as a mid-bass as well :)

http://www.sundownaudio.com/misc/protos/X-6.5SW/CCAW_Response_Curve.jpgThat impedance profile doesn't really jive with the .44mH figure. Does this sample have the copper treatment?

black05alti
06-12-2013, 11:06 PM
I'd love to have these in my doors

sundownz
06-25-2013, 11:26 AM
We are still developing the soft parts a bit at our factory; here is a video on the 2nd prototype with a small revision we made to the surround material :

X-6.5SW Test Video From Factory #1 - YouTube (http://www.youtube.com/watch?v=KP3nDHbGxR4)
"Early sample test. We are tooling a new spider to go with it as well. There is some high frequency sound which is a little bit of clipping of the source unit."

X-6.5SW Test Video From Factory #2 - YouTube (http://www.youtube.com/watch?v=wgutlIW9lGg)
"Test at one frequency / maximum mechanical travel -- testing for ruggedness."

At this point we are beating them silly just to test ruggedness -- so we are pushing them well into mechanical noise territory to do so. When I get my hands on them I'll do more videos at varying levels of excursion, etc.

TheycallmeJT
06-25-2013, 11:52 AM
**** those things are sick. hell of a lot of throw in the videos. would love to get some of these to play with when they come out

HomeGrown
06-25-2013, 12:43 PM
very nice !!
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.

DB-Audio
06-25-2013, 01:23 PM
sick 2 of these would be perfect for a center counsole build