U-Series 8" v.1 Subwoofer
Notice On Packaging For Subwoofers
Sundown Audio has led the industry in quality and performance for over a decade. To improve accuracy and transparency, we have updated our subwoofer power ratings to reflect true real-world performance.
During this transition, some packaging may show previous ratings. Performance fully aligns with our current published specifications. If you have any questions about authenticity or ratings, please contact directly for confirmation.
- 750W Watts RMS / 1500 Watts Peak
- Dual 2 or 4 ohm voice coils
- Optimized for small ported enclosures
- Aluminum 2.25” voice coil former for superior heat dissipation
- High-temperature copper voice coil
- Double stitched surround
- Heavy-duty cast basket
- Spring-loaded terminals accept up to 8-gauge wire
- Stitched-on heavy-duty tinsel leads
- Solid pole with vent channels and aluminum shorting ring cap
- Rear gap-venting
- Top-Plate Cooling Channels
The U-8 can be thought of as an SA-8 v3 on performance boosters. Everything there is to love about the SA-8 v3 just with more power handling, more x-max, and more output potential.
The specially designed motor is mated to a custom tooled and patented (US Patent D691595) frame which allows for a larger spider and superior clearances to nearly any other 8" woofer on the market today. The U-8 features a full 18mm of one-way linear excursion and mechanical capacity in excess of double the linear limits (around 2.5” peak-to-peak) to ensure that mechanical failures are nearly impossible. As with the SA-8 v.3 it features a surround that mimics the geometry of our large Mega-Roll v.2 surrounds for incredible linearity.
Specifications
| Dual-2-Ohm T/S Specs | |
|---|---|
RMS Power (D2) |
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Peak Power (D2) |
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Re-Ohms (D2) |
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FS-Hz (D2) |
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Vas-L (D2) |
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Qes (D2) |
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Qms (D2) |
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Qts (D2) |
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BL-NA (D2) |
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Mms-Grams (D2) |
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Cms-uM/N (D2) |
|
Sensitivity-dB @ 1w/1m (D2) |
|
Xmax (D2) |
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| Dual-4-Ohm T/S Specs | |
RMS Power (D4) |
|
Peak Power (D4) |
|
Re-Ohms (D4) |
|
FS-Hz (D4) |
|
VAS-L (D4) |
|
Qes (D4) |
|
Qms (D4) |
|
Qts (D4) |
|
BL-NA (D4) |
|
Mms-Grams (D4) |
|
Cms-uM/N (D4) |
|
Sensitivity-dB @ 1w/1m (D4) |
|
Xmax (D4) |
|
| Subwoofer Measurements | |
Documentation |
|
Displacement (Inches) |
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Depth (Inches) |
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Cutout (Inches) |
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Motor Diameter (Inches) |
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| Ported Enclosure Specs | |
Ported Enclosure Size |
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Recommended Port Area |
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Recommended Port Tuning |
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| Sealed Enclosure Specs | |
Sealed Enclosure Size |
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| 4th Order Enclosure Specs | |
4th Order Sealed Side |
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4th Order Ported Side |
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4th Order Port Area |
|
4th Order Port Length |
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