Sundown Entry Level Woofer

[sundownz 197]

ill have to check my funds... but i think ill be a fuggin fool not to pick atleast 2 up for 100 each shipped..... how about some more pics!?

Production hasn't started - and I would do an intro sale, rather than a pre-order, so you would have plenty of time to get some money together.

[sundownz 197]

Pics with the little brother, the E8.

Little more info and preliminary T/S specs:

2" coil x 1.57" winding height

1.57" tall magnet stack

0.5" thick top plate

Gap Venting

Basket Window Venting

Pole Venting

High profile foam surround

Paper cone w/ interlocking poly dust cap

Single spider w/ flat, tied down leads

16mm linear one-way x-max

~25 mm one-way x-mech (travel before damage)

Qes: 0.520

Qms: 4.720

Qts: 0.468

Fs: 32.30 Hz

Vas: 55.63 L

Re: 7.26 ohms

BL: 19.47 N/A

Le: 4.47 mH

Specs w/ Coils in series - D4 nominal coils.

Sealed box specs:

1.5 ft^3 = 0.707 Qtc = 50 Hz F3

1.0 ft^3 = 0.798 Qtc = 52 Hz F3

Ported box specs:

2.5 ft^3 tuned to 30 Hz = 27.5 Hz F3 (flat response)

2.5 ft^3 tuned to 35 hz = 30.0 Hz F3 (output bump above 33 Hz)

T/S specs are on the one I put together by hand, so production will vary slightly I'm sure.

[audio-neon 34]

nice

[tezin87 0]

The E12 was also tested in Sean Belangers truck. It sat in a 0.5 ft^3 sealed box inside of Sean's wall, inverse mounted.

SPL Results as follows:

17.7 watts @ 133.2 dB

33.9 watts @ 135.9 dB

66.5 watts @ 138.8 dB

120.4 watts @ 141.3 dB

236.7 watts @ 143.7 dB

448 watts @ 145.1 dB

765 watts @ 146.2 dB

999 watts @ 146.3 dB

1399 watts @ 147.2 dB

1886 watts @ 147.2 dB

The motor started at 75.5 degrees and ended at 82 degrees after the testing.

Now... we ran a 60 second burp on a 74 Hz sine wave @ 450 watts.

The motor went from 82 to 84 degrees... so it'll take thermal abuse!

Over 140db in a sealed box with 1 12''? Is this right?

[sundownz 197]

Over 140db in a sealed box with 1 12''? Is this right?

Yes, that was with the driver that this thread was originally about - which will be called the A12 when released (was to be the E12 originally, but plans for E line changed).

The E12, what we are now talking about, is a different driver (as pictured on this page).

In any event... yes, the box was technically sealed. But... it's sitting inside that wall and it makes a 4th order band-pass, the sealed box is like a tiny back chamber and the wall is like a huge front chamber. The main focus of the testing was to find where power compression occurred and to abuse test it.

[sundownz 197]

Since we have drifted off and now we are talking about a different sub I'm going to close this thread and make one for the E12 as it is now

Whenever the A12 is ready I'll make another for it as well.