SUNDOWN AUDIO | U-65 6.5″ SUBWOOFER D4 | 500W RMS | 4 OHM

Are you ready to elevate your audio experience to new heights? Look no further than the Sundown Audio U-6.5 Subwoofers. Engineered with precision and cutting-edge technology, these subwoofers deliver outstanding performance and unrivaled power.
Featuring a robust 400W RMS (Root Mean Square) driver, the U-6.5 Subwoofers pack a punch that will leave you breathless. Whether you’re craving deep, booming bass or crystal-clear lows, these subwoofers are designed to exceed your expectations.
With the U-6.5 Subwoofers, you have the option to choose between two voice coil impedances: D2 (Dual 2-ohm) and D4 (Dual 4-ohm). This flexibility allows you to customize your setup and optimize your audio system for the perfect sound.
One of the standout features of the U-6.5 Subwoofers is the “W” surround, inspired by the successful SD-4 model. This surround is meticulously engineered using Finite Element Analysis (FEA) to push the limits of mechanical performance. Its stiffer construction near the limits ensures maximum durability and helps prevent damage, even when the subwoofers are pushed to their extremes.
To further enhance performance, Sundown Audio is developing a specially designed spider that works in harmony with the surround, catering specifically to the U-6.5SW model. This synergy between components ensures optimal performance and delivers a listening experience like no other.
When it comes to excursion capabilities, the U-6.5 Subwoofers boast an impressive 19mm one-way linear X-max, reaching a remarkable 70% BL. This extraordinary excursion is backed by a substantial amount of motor force, providing you with the ultimate sonic experience.
Unlike previous models that had depth limitations, the U-6.5 Subwoofers are designed without constraints. Sundown Audio has pulled out all the stops to create a subwoofer that excels in performance, without compromising on size or form factor.
Experience the future of bass with the Sundown Audio U-6.5 Subwoofers. Elevate your sound system, make a statement, and feel the music like never before. Get ready to unleash the power!

FEATURESRMS: 500WBlack Aluminum 1.753 voice coil former for superior heat dissipationHigh Temperature Round-Wire Copper voice coilDouble stitched surroundHeavy duty cast basketSpring loaded terminals accept up to 8 gaugeStitched-on heavy-duty tinsel leadsSolid pole with vent channels and aluminum shorting ring capRear drilled gap-ventingMagnet ID shorting ringTop-Plate Cooling ChannelsOptimized for small ported enclosuresU-6.5SW
T/S SPECS U-6.5SW” D4RE (Ohms) 4.0586 6.6274FS (Hz) 41.9533 38.6925VAS (L) 2.9053 3.7701Qes 0.5238 0.5005Qms 8.5834 7.2470Qts 0.4937 0.4681Le (mH) 4.0112 5.5892BL (NA) 16.7428 20.0082Mms (Grams) 137.2546 124.3518Cms (uM/N) 104.8528 136.0613Sens (dB @ 1w/1m) 77.8706 78.1460
ENCLOSURE SPECS
Ported EnclosureSize: .25-.35 cuft netPort Area: 4-5 sqinPort Tuning: 35hz -40hz
Sealed EnclosureSize: 0.125-0.2 cuft netDisplacement: .04 cu. ft.
Physical Dimensions
Depth: 5.71″
Outside Diameter: 7.17″Cutout: 5.94″