The Sundown SA series has been our most popular line since its original introduction in 2009. What better way to create a new version 2 than to upgrade, literally, every single part of the woofer? We started with a larger, more powerful motor to drive the larger 2.75” coil and stronger soft parts – this maintains the perfect balance of the original SA series while also increasing the power handling to 1000-watts RMS.

When designing the SA v.2 series we started out with an FEA optimized motor & coil design capable of 19mm of one-way linear excursion by 70% BL and just over 35mm of x-mech. This motor & coil setup was then mated up to an extremely robust double-layer spider with fully tied-on & doubled-up “XL” tinsel leads (84-Strands of Conductor per lead), an SPL competition grade paper cone, and a strong foam surround. The motor also features a large magnet ID shorting ring (faraday ring) to reduce distortion causes by inductance & inductance variation over stroke.

We further improved the voice coil cooling system from the original SA series. This system allows our 2.75″ coil to match and exceed the thermal performance of many competing 3″ coil drivers on the market without requiring the usage of a much heavier voice coil than required for the design. The key to the SA series is, in fact, the perfect balance of motors force to mass. We have maintained that delicate balance in the v.2 through extensive testing and optimizations.

We then borrowed the new frame, aluminum surround bolt-on clamps, and aluminum vent rings that we tooled for the U-Series to further bring the SA to new heights of performance and reliability. At this point you can think of it as a little brother to the U Series.

FEATURES

• Xmax = 19mm one-way by 70% BL
  
• RMS Power = 1000-watts
  
• Vented magnetic gap
  
• Optimized high-velocity pole vent
  
• Innovative high-velocity vented frame spacer ring
  
• Black Aluminum 2.75” voice coil former for superior heat dissipation
  
• High Temperature copper voice coil wire
  
• Large aluminum faraday ring (Magnet ID)
  
• Spring Loaded Terminals
  
• Stitched-On Double “XL” Tinsel Leads to prevent fatigue and failure
  
• High strength cast aluminum frame

List of upgrades compared to the v1 SA series (Rev.1,2,3):

• Magnet outer diameter increased from 180mm to 190mm
  
• Magnet slugs increased from 25mm to 27mm in height (total 4mm more height)
  
• Motor structure fully bolted together with 3x M6 bolts (eliminates the possibility of motor shifting)
  
• Top-Plate “Slits” implemented as with the X and Z series. Increased cooling & reduced distortion.
  
• Improved gap venting — more / flared gap vents.
  
• Improve pole-vent design — smoothly flared on both sides.
  
• Coil increased from 63.5mm (2.5″) to 70mm (2.75″) in diameter. Higher thermal capacity.
  
• New “U series” style cast-aluminum frame for taller cones (more x-mech both top-side from cone to spider and bottom from spider to top plate)
  
• Aluminum cast gasket to bolt-on surround.
  
• Aluminum cast vent ring to enhance thermal transfer from motor to the frame.
  
• Standard with double “XL” leads and “bolted-on” spider
  
• Larger and thicker surround (same tooling as U series).
  
• Strongest paper cones we have ever produced… new two-piece mold technique.
  “Large Flange” dust cap just like our larger woofers. Essentially eliminates dust-cap glue failure.
  
• Larger spider diameter on the 12/15″ models (the 10″ retains the same 188mm spider)… 12″ up to ~200mm and 15″ up to ~210mm
  
• Improved spider material for longer life.

SPECIFICATIONS

• RE (Ohms): 3.90
  
• FS (Hz): 37.0810
  
• VAS (L): 10.3683
  
• Qes: 0.3598
  
• Qms: 3.7041
  
• Qts: 0.3280
  
• Le (mH): 3.5178
  
• BL (NA): 28.3634
  
• Mms (Grams): 318.8226
  
• Cms (mm/N): 57.7815
  
• Sens (dB @ 1w/1m): 83.42

ENCLOSURE SPECS

• Sealed Enclosure: 0.5 cu ft
  
• Ported Enclosure: 1.0 cu ft
  
• Recommended Tuning: 35Hz
  
• Recommended Port Area: 15 sq in
  
• Displacement: n/a
  
• Depth: 6.92″
  
• Outside Diameter: 10.94″
  
• Cut-Out: 9.17″

Shipping Policy

DBs Car Audio is proud to offer fast & free shipping on all items listed in our store!!

Shipping Methods and Transit Times

DBs Car Audio ships orders from our Kissimmee, Florida location. On occasion, orders will be fulfilled directly by the manufacturer or distributor in order to reduce the shipping time..

Order Tracking

Once an order has been shipped, we send our customers an email with the tracking number for the order. Click on the tracking link in the email to follow the location of the package on the carrier's website. If you did not receive a tracking number by email or need to confirm the tracking information, please contact call us at 1-800-927-9390

Signature Required

Due to the valuable contents of some shipments, DBs Car Audio will only require a signature upon delivery if the order is over $500. Such guidelines will not be overruled upon the customer's request. Please understand that this is a security measure taken by our Company to ensure the safe delivery of each package and guarantee excellent service. Many of our third-party shipping carriers and payment companies require signatures upon delivery to protect against fraud and theft. Customers may request a signature upon delivery by emailing us at dbscaraudiofl@gmail.com.

Shipping Policy Disclaimer

Delivery estimates do not apply to items shipped directly from the manufacturer, nor out-of-stock items. Some items that ship from the manufacturer can only be delivered to addresses within the 48 continental states.

Standard delivery time for domestic customers will average from 2-4 business days, but can take longer in some cases. Saturday, Sunday and national holidays are not considered business days for delivery purposes.

Our Shipping Guarantee applies only to shipments delayed due to our service failure. We will not guarantee shipments that are delayed due to an act of god (ex: weather), a catastrophic event, or failure by our delivery partners. Our guarantee is also voided if incorrect billing or shipping information is given and results in your order being delayed to its destination. Our guarantee is also void if no one is available to sign for shipment when delivery attempt is made if a signature is required.