Sundown Audio U-8 D4 8" 600W RMS Dual 4-Ohm Subwoofer
- SKU #: 03422
The Sundown U Series is our premier “standard suspension” woofer series. It is the most direct replacement for the world famous Z v.3 woofer line which we produced from 2011 to 2016 before launching the “new platform” Z v.4 series. Due to numerous advancements in our design process the U Series is able to deliver performance on-par with the Z v.3 series but at a much lower cost.
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
U-8 D4 - Sundown Audio 8" 600W RMS Dual 4-Ohm U Series Subwoofer
- Sundown Audio U-8 D4 8" 600W RMS Dual 4-Ohm U-8 Series Subwoofer
- Power Handling:
- RMS Power = 600 watts
- Voice Coil Configuration: Dual 4-ohm
- Vented magnetic gap
- Solid Pole piece with chamfered edges for increased air-powered voice coil cooling
- Black Aluminum 2" voice coil former for superior heat dissipation
- High-Temperature copper voice coil wire
- Spring Loaded Terminals
- Stitched-On Tinsel Leads to prevent fatigue and failure
- High strength stamped steel frame
- Solid Pole piece with chamfered edges for increased air-powered voice coil cooling
- 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 U-8 D4 T/S Parameters
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
Weight: 35LB
Additional Information
-
Memphis SE2000.1DF Amp Monoblock 2000W Subwoofers Speaker Bass Amplifier
Special Price $179.99
Retail: $199.99
-
MAXI-8543 - Performance Teknique 60 Amp Fuse
Special Price $9.99
Retail: $19.99
-
DC Audio LV4 M3 15 D4 15" 1400W RMS Dual 4-Ohm Subwoofer
Special Price $524.99
Retail: $714.99
-
Zapco ST-500XM II 500W RMS Monoblock Class D Car Amplifier
Special Price $199.99
Retail: $329.99
-
DD Audio Digital Designs LE-508.3 3 x 8" 3000W Loaded Enclosure subwoofer
Special Price $649.00
Retail: $879.99