SKU: 91628827508

Sundown Audio - U-Series v.1 6.5"

Sale price$135.00 Regular price$150.00
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Sundown Audio - U-Series v.1 6.5"500 Watts RMS 1000 Watts Peak Dual 2 or 4 ohm voice coils Optimized for small ported enclosures Aluminum 1. 75 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 Perfect for high power

  • 500 Watts RMS/1000 Watts Peak
  • Dual 2 or 4 ohm voice coils
  • Optimized for small ported enclosures
  • Aluminum 1.75” 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

Perfect for high-power underseat enclosures and designed to be at home in the competition lanes or playing your favorite tunes, the U Series is the premier “standard suspension” woofer in the Sundown lineup. A double-stacked 9” wide ferrite magnet system is coupled to a thick top plate. A thick set of shorting rings are also used inside the magnets and on the pole cap, smoothing out frequency response while doubling as a heat sink and airflow guide. An all-new, substantially thicker custom aluminum frame was designed specifically for the U Series, and equipped with heat-dissipation ribs. The v.2 motor also features an extended pole piece to keep the coil controlled under high stress!

Specifications

RE (Ohms) 4.0586 6.6274
FS (Hz) 41.9533 38.6925
VAS (L) 2.9053 3.7701
Qes 0.5238 0.5005
Qms 8.5834 7.2470
Qts 0.4937 0.4681
Le (mH) 4.0112 5.5892
BL (NA) 16.7428 20.0082
Mms (Grams) 137.2546 124.3518
Cms (uM/N) 104.8528 136.0613
Sens (dB @ 1w/1m) 77.8706 78.1460
Xmax 19mm 19mm
T/S SPECS U-6.5SW" D2 U-6.5SW" D4
   

Enclosure Specifications

  • Ported Enclosure
    • Size: .25-.35 cu. ft. net
    • Port Area: 4-5 sq. in.
    • Port Tuning: 35hz -40hz
  • Sealed Enclosure
    • Size: 0.125-0.2 cu. ft. net
    • Displacement:  .04 cu. ft. 
  • Depth:  5.71"
  • Outside Diameter: 7.17"
  • Cutout: 5.94"

Physical Dimensions

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 91628827508

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 2053 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
Cecily
Omaha, US
★★★★★ 5
Smaller than it looks but worth it.
Color: A.Beige, Color: A.Beige
Cute and small. Definitely good for traveling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
I
Verified Purchase
Imani Jones
Massapequa, US
★★★★★ 5
Nice & Spacious
Color: A.Beige
Perfect jewelry case for travel. It fit mostly everything that I needed . Would definitely recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
P
Verified Purchase
Photo Mom
Waukegan, US
★★★★★ 5
I’ve tried so many and Love this one!
Color: Black, Size: Large (10"W*6.69"D*2.17"H)
When I travel my earrings and broaches and bracelets are important parts of my outfits (I like finishing “the look” with the right accessory or two. I’ve struggled to find a good, accommodating yet packable case. This has a very low profile which makes it very easy to slip in my luggage. Well made, sturdy and good zipper It holds lots of earrings and underneath will hold my broaches. Room left over in lid for bracelets and a zippered pocket for additional storage. I found exactly what I wanted and needed in this case. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 22, 2026
L
Verified Purchase
L Clark
Massapequa, US
★★★★★ 5
Just Buy it!
Color: Black, Size: Large (10"W*6.69"D*2.17"H)
I purchased one of these for my mom for Christmas and I loved the quality so much that I purchased another one for myself. I always have all these different jewelry bags when I would travel and it was annoying. But now all my jewelry is together in one place. The quality is really great! It’s durable and big enough to fit many shapes and sizes of my jewelry pieces. The best part is that the middle part can be removed if you want. It’s really cute and chic. I’m so glad I purchased this jewelry case.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
A
Verified Purchase
Amazon Customer
Bozeman, US
★★★★★ 5
Very nice case
Color: White, Size: Medium (8.46"W*5.71"D*2.17"H)
Cute, practical, and functional jewelry case! I purchased the larger one, and it fits my needs perfectly!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026

recommand products