SUNDOWN AUDIO U SERIES 8" (600W RMS) D4 OHM SUBWOOFER
- U8 D4
Sundown Audio U8 D4 Subwoofer:
The Sundown Audio, U series 8-inch Dual 4 Ohm Subwoofer Down4Sounds Top Pick for 8's. The Sundown U8 is a conserve rating at 600 watts of power; these subwoofers can take the heat; they are also very musical and built like a tank. The Sundown U8 is fully capable of hitting both DEEP and Punchy Bass, The U 8 sub is one investment you thank yourself for buying at Down4Sound!
We start with a double-stacked / 8.66” wide Y35 grade ferrite magnet system coupled to a one-piece, bumped T-Yoke and a 0.6” thick top-plate. Just as with the Z v.3 before it and our other high-end subwoofers we also add a very thick (5mm thickness) aluminum shorting ring inside the magnets to reduce static inductance and level out inductance over stroke. The U series motor also features a 0.6” long pole-extension to keep the coil under control at high levels of excursion.
The voice coil is a 2.36” long / 3” diameter 4-layer aluminum winding / aluminum former unit – which is the same coil we use in our X v.2 series and, thus, the U series has the same 1500-watt RMS ratings. The coil temperature is kept in check by a heavily smoothed / high-velocity pole-vent and a series of ten direct air-gap vents in the back plate. The U series also features newly tooled cast aluminum vent rings in between the frame and top plate to effectively exchange air at a high velocity over the voice coil beneath the spider landing.
The U series features an all-new cast aluminum frame series to the Sundown line which allows for taller cones than the older frames used on the Z v.3 series. The taller cones provide enhanced coil stability and increased mechanical excursion capability. We also tooled matching cast-aluminum surround clamps for the U series to ensure durability in the most demanding situations. The surrounds and cone bodies have been fully custom tooled especially for the U series and are stronger / support more excursion than the Z v.3 series cones and surrounds. The new cone bodies also feature an indentation for the same wide-flange, ultra-strong dust caps as our new platform subwoofers.
If you are looking for a woofer that sounds similar to the SA series but handles significantly more power… the U series is exactly what you need. It has been designed to live up to the reputation earned by our Z v.3 series both in terms of every-day music enjoyment and SPL competition
- Re: 6.1228 Ohms
- Fs: 52.7160 Hz
- Zmax: 40.0810 Ohms
- Qes: 0.6072
- Qms: 3.3675
- Qts: 0.5144
- Le: 5.4104 mH (at 1 kHz)
- Diam: 165.1000 mm (6.5 in)
- Sd: 21408.3884 mm^2 (33.1831 in^2)
- Vas: 2.9629 L
- BL: 25.8651 N/A
- Mms: 200.2935 g
- Cms: 45.5082 uM/N
- Kms: 21974.0859 N/M
- Rms: 19.7008 R mechanical
- Efficiency: 0.0672 %
- Sensitivity: 80.2899 dB @1w/1m
- Sensitivity: 81.4513 dB @2.82vrms/1m
- Krm: 2.912E-03 Ohms
- Erm: 1.001E+00
- Kxm: 63.818E-03 Henries
- Exm: 719.614E-03
- Top Mount Depth: 6.80"
- Mounting Depth: 6.25"
- Recommended Ported Box: 0.75-1.0"
- Woofer Displacement: cu. ft. 0.011
- Outside Diameter: 8.65"
- Cutout Diameter: 7.375"
- Recommended Tuning Frequency: 35Hz
Sundown Audio requires us to send customers with equipment problems directly to them for all warranty and non-warranty claims. Please follow their proceedures..
Sundown Audio RMA form: https://sundownaudio.com/support/return-authorization-form/
Sundown Audio Product Warranty Information: https://sundownaudio.com/warranty/
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The U-8 series is most definitely a car shaker! I have 2 wired at 1ohm amped with a 1500 watt audiopipe. My boys thought I had 2 12's until I popped the trunk. Yeah 2 8's slappin'!!!
U-8 Sundown Audio
Down 4 sounds is my go to dealer for sundown audio merchandise!!
Top notch service and delivery
The fastest delivery I’ve ever had when it comes to ordering. D4S was on top of it and kept me in the loop all the way to my door step. I’m definitely a repeat customer you can’t go wrong!!