The SML series is the shallowest line of subwoofers to ever be offered by Sundown Audio. Despite being over and inch shallower than our SLD series we are within 1mm of linear excursion comparatively. This is a huge win for customers requiring an extremely shallow driver. We found that the SML series will fit the majority of pre-fab under-seat enclosures and perform extremely well in the air-space provided by these enclosures as well. These will excel in such applications.

The biggest problem that we set out to solve while creating the SML was the fact that many shallow drivers, especially in this price range, have an incredibly high QTS making it very difficult to achieve a flat response and also making them quite unsuitable for ported enclosures (where the SML will also work well). After many months of work and testing prototypes we landed on the Dual-Magnet design motor and hit our mid-QTS target square on the head (0.34 to 0.51 range depending on size and coil configuration).

• Features

  • Xmax = 11mm one-way by 70% BL
  • Xmech is a hard limit of 25mm one-way for 12s and 20mm one-way for 10s
  • RMS Power = 500-watts
  • Black Aluminum 2.5” voice coil former for superior heat dissipation
  • High Temperature 4-Layer copper voice coil wire
  • Stitched-On “Mini-XL” Tinsel Leads to prevent fatigue and failure
  • Vented Pole-Piece and Multi-Vented Magnetic Gap
  • Dual-Magnet Design for appropriate motor force factor and mid QTS
  • Custom tooled cone shape for reduced mechanical noise over high excursion
  • Bolt-through motor design to ensure maximum longevity and ruggedness against mechanical failures
    ** This motor is bolted through the top so the bolts are not visible from the back like several other models.
  • Magnet ID shorting ring

   
  

  Specifications

  • T/S SPECS	SML 10" D2	SML 10" D4	SML 12" D2	SML 12" D4
    RE (Ohms)	3.650	6.850	3.650	6.850
    FS (Hz)	35.210	36.116	34.932	39.905
    VAS (L)	23.679	24.828	39.012	29.593
    Qes	0.931	0.469	0.456	0.617
    Qms	2.703	2.766	2.862	3.035
    Qts	0.341	0.401	0.394	0.513
    BL (NA)	17.431	21.022	17.879	22.801
    Mms (Grams)	146.986	133.242	182.067	186.887
    Cms (uM/N)	139.003	145.749	114.018	85.771
    Sens (dB @ 1w/1m)	86.1dB	85.8dB	87.5dB	86.7dB

     
    

    Enclosure Specifications

    • 	SML 10"	SML 12"
      Sealed Enclosure	0.5-0.75 ft^3	0.75-1.0 ft^3
      Ported Enclosure	1.0-1.25 ft^3	1.25-1.75 ft^3
      Recommended Tuning	35hz	35hz
      Recommended Port Area
      Mounting Depth	3.78”	4.45”