Sundown mates these new platform frames to a triple stacked 234mm (9.21) diameter motor structure with a total magnet stack height of 102mm (4.01) featuring a hyper-extended pole and extreme clearances (allowing over 4 p-p travel before mechanical bottom effectively making it bottomless). Compared to the X v. 2 motor both the top & back plates are thicker allowing for even more magnetic strength and excursion potential. This motor drives a 3 diameter 4-Layer Flat Wire Aluminum Voice Coil wound on a thick aluminum former to incredible levels of excursion.
5 now uses the same voice coil as the NS v. 3 series which means it is now a much longer 4-layer vs. The 4-Layer coil is able to shed heat faster, has a much lower inductance, and less mass all while being much longer allowing for a higher linear excursion and thus less distortion. They also leveraged the much larger motor to keep total motor force slightly higher than the Z v.
2 while also having all of the other advantages listed prior. Compared to the Z v. 2 Sundown also increased the thickness of the Magnet ID shorting ring by 33% to further reduce static inductance and inductive distortion.
Based on Sundown's years of experience with the Z v. 4 series they've improved voice coil ventilation to be even more effective and features reduced turbulence in order to reduce voice coil temperatures and increase reliability. 5 series was designed from the ground-up to become the new standard in the low-frequency / small ported box subwoofer category in this price range.They will work in the same small enclosures that are commonly used for for Sundown Audio's subwoofers, although, they can be used with enclosures up to about 50% larger than those if you desire even more low-end extension. 5 series is really a different kind of woofer due to its incredibly linear suspension. They are designed for the LOWEST level of bass extension possible in a small enclosure while maintaining extremely low levels of distortion. Voice coil configuration: Dual 1 Ohm. Xmax = 35mm one-way by 70% BL. Innovative high-velocity vented frame spacer ring. Black aluminum 3 inch 4-layer voice coil. Custom tooled six spoke basket. Large aluminum Faraday (shorting) Ring. Stitched-On Double-XL Tinsel Leads to prevent fatigue and failure. DC Resistance (Re): 2.0.
Resonance Frequency (Fs): 28.3 Hz. Equivalent Volume (Vas): 63.9 L. Electrical Q Factor (Qes): 0.49.Mechanical Q Factor (Qms): 3.81. Total Q Factor (Qts): 0.43.
Voice Coil Inductance (Le): 0.74 mH. Force Factor (BL): 16.4 NA. Air Load (Mms): 371.1 g.
Suspension Compliance (Cms): 0.09 mm/N. Sensitivity: 86.5 dB 1w / 1m. Outside Diameter: 15.51 in. Cutout Diameter: 13.83 in.Recommended Port Area: 68 sq. 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 "SUNDOWN AUDIO Z-15 V. 5 D1 SUB 15 2000W RMS DUAL 1-OHM SUBWOOFER BASS SPEAKER" is in sale since Friday, June 17, 2016. 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 worldwide.