Sundown Audio SD-2 8" Prototypes - Car Audio Classifieds
** Thread of prototype development
As with any pre-order delivery times are an ETA (estimated time of arrival) and are not a guarantee of the delivery date. DO NOT ORDER if you are not okay with possible delays on the delivery.
That being said the ETA is middle of January 2013 on these.
Pre-Order Price : $115
Regular Price : $140
Pricing is shipped in continental 48 states. Contact us for a SH quote to AK or HI. !!! THIS IS FOR USA ONLY !!!
To order get in touch with your favorite local or online dealer or send a Paypal in to us at firstname.lastname@example.org
YOU MUST INCLUDE YOUR NAME AND ADDRESS. If these are both not included your payment will be refunded.
Suggested Box : 0.25 ft^3 sealed
(These will run ported if desired in 0.5 ft^3)
Depth : 4.75"
Power : 300 RMS
Top Plate Height : 25mm
Coil Height : 12.5mm/ 8-layer Copper
Former : Special low eddy current alloy w/ spiral cut
X-Max : 14.5mm by 70% BL in FEA
Topology : Under-Hung
Re : 6.03 ohms (series)
Fs : 45.2 Hz
Qes : 0.63
Qms : 7.31
Qts : 0.58
Le : 6.26 mH
Sd : 30.68 in^2
Vas : 7.74 L
BL : 15.55 NA
Mms : 89 g
Cms : 138 uM/N
Sens 1w/1m : 82.29 dB
Sundown SD-2 8s Sealed Box Demo - YouTube
* Same spider as the SA-8 v.2 but only one layer (top layer)
* Solid pole like the other SD-2 woofers so there is no need to leave room to breathe behind them.
* For this design I used drilling in the basket as opposed to the vent ring to save depth.
* Left to right : E8 v.2 // SD-2 8 // SA-8 v.2