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Sundown Audio
U SERIES 6.5IN D4 (400WATTS) SUBWOOFER
SKU: S0FJ SW-UV16.5D4
Beginner — under 30 min
Description
MIA's Description
This subwoofer is optimized for small ported enclosures and boasts a 1.75-inch aluminum voice coil former for enhanced heat dissipation. It handles 500 Watts RMS and 1000 Watts Peak power.
Fitment
Fitment Guaranteed
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on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Sundown Audio |
| Part Number | S0FJ SW-UV16.5D4 |
Videos
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Sundown SA 6.5 subwoofers playing LOW 28hz
Sundown SA 6.5 vs Savard Hi-Q 6.5 Round 2
Sundown Audio U6.5” Frequency Sweep/Musical Scores…126.98 @ 31hz Peak….111db Music Average!
Sundown Audio SA 6.5 Subwoofer review
***Big Bass in a Tiny Package*** Sundown Audio SA-6.5" Subwoofer *Woofer Test Wednesday*
NEW Sundown Audio LCMR 6.5” Mid Woofers Installed w/ Demo
Sundown SA 6.5 Subs
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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