The SA line was designed to be the centerpiece of the Sundown Audio sub woofer lineup -- the line to which all of their other lines are compared. They started with an FEA optimized motor design capable of 19mm of one-way Klippel verified excursion and significantly more x-mech (maximum mechanical excursion).The motor also features dual Faraday rings (shorting rings) to reduce inductive distortion. At Sundown Audio this still was not enough so they designed a highly optimized voice coil cooling system that ensures that an SA series woofer will never over-heat when used anywhere close to it's rated power level. This system allows the 2.5" coil to match and exceed the thermal performance of many 3" coil drivers on the market today.
The SA series is also gaining popularity in SPL competitions due to their excellent voice coil cooling and rugged, durable constructions with several customers achieving output well over 150 dB! 19.0mm XMax by 70% BL method oneway (38.0mm peak to peak).
DC Resistance (Re): 7.07. Resonance Frequency (Fs): 33.96 Hz. Equivalent Volume (Vas): 24.63 L.
Electrical Q Factor (Qes): 0.55. Mechanical Q Factor (Qms): 5.15. Total Q Factor (Qts): 0.49. Voice Coil Inductance (Le): 4.84 mH.
Force Factor (BL): 25.67 NA. Air Load (Mms): 237 g. Suspension Compliance (Cms): 92.27 m/N.Sensitivity: 84.22 dB 1w / 1m. Ported: 1.5 - 2.0 cu. Outside Diameter: 12.625 in. Cutout Diameter: 11.125 in. In order to maintain an inventory of 100%, Brand New, A-Stock, untouched products, all sales are final.
We ask that you please be sure you are ordering the correct product. The item "OPEN BOX SUNDOWN AUDIO SA-12 D4 CLASSIC SUB 12 750W DUAL 4-OHM SUBWOOFER" is in sale since Thursday, December 10, 2020. This item is in the category "Consumer Electronics\Vehicle Electronics & GPS\Car Audio\Car Subwoofers".
The seller is "woofersetc_outlet" and is located in Los Angeles, California. This item can be shipped to United States.