SLD SERIES

SLD12-4

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T/S SPECS SLD 10″ D2 SLD 10″ D4
RE (Ohms) 3.65 6.85
FS (Hz) 44.907 46.817
VAS (L) 14.630 12.091
Qes 0.452 0.547
Qms 2.212 2.246
Qts 0.376 0.440
Le (mH)
BL (NA) 18.247 24.492
Mms (Grams) 146.252 162.818
Cms (uM/N) 85.883 70.979
Sens (dB @ 1w/1m) 86.5 85.4
ENCLOSURE SPECIFICATIONS
Sealed Enclosure 0.5 cu ft
Ported Enclosure 1 cu ft
Recommended Tuning 35Hz
Recommended Port Area 15 sq in
Displacement
Depth
Outside Diameter 10.5″
Cut-Out 9.25″
COMING SOON… Enclosure designs by

The Sundown SLD series can be considered a “re-boot” of the SD-2 line from 2011. The SD-2 was essentially a “shallow SA v1” by design – meaning it shared the cone, surround, and spider with the SA but with a shorter motor with a shorter coil. The SD series went another route starting with the 3rd generation (SD-3) – tilting more towards SQ and sealed enclosures. Due to popular demand we have created the SLD series to add a heavily abuse tolerant “shallow” that likes ported boxes back into the line-up!
Much like the current SD-4 series we utilized solid pole-piece so the SLD can also be mounted directly against the rear enclosure wall to reduce net depth requirements. Compared to the old SD-2 we have introduced numerous important upgrades: pole-piece channels for reduced air noise & increased cooling, top-plate “slits” for better cooling and less distortion, and a magnet ID shorting ring. In terms of long-term reliability we have also bolted down the spider, bolted the motor together, bolted on the aluminum pole cap, and added “mini-XL” lead wires thus ensuring many years of flawless service.

The bottom line is if you need a relatively shallow woofer that will take a beating then the SLD is, hands-down, the woofer for you from our line. If you are looking for more SQ then look toward the SD-4 series.

Features & Technology:
• Xmax = 12mm one-way by 70% BL
• RMS Power = 600-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
• Solid Pole with vent channels around the OD
• Magnet ID shorting ring

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T/S SPECS SLD 12″ D2 SLD 12″ D4
RE (Ohms) 3.65 6.85
FS (Hz) 42.959 45.142
VAS (L) 26.889 29.481
Qes 0.691 0.619
Qms 2.227 2.298
Qts 0.415 0.487
Le (mH)
BL (NA) 19.868 23.025
Mms (Grams) 204.319 168.773
Cms (uM/N) 67.177 73.652
Sens (dB @ 1w/1m) 88.1 88.3
ENCLOSURE SPECIFICATIONS
Sealed Enclosure 1 cu ft
Ported Enclosure 1.5 cu ft
Recommended Tuning 35Hz
Recommended Port Area 26 sq in
Displacement
Depth
Outside Diameter 12.625″
Cut-Out 11.125″
COMING SOON… Enclosure designs by

The Sundown SLD series can be considered a “re-boot” of the SD-2 line from 2011. The SD-2 was essentially a “shallow SA v1” by design – meaning it shared the cone, surround, and spider with the SA but with a shorter motor with a shorter coil. The SD series went another route starting with the 3rd generation (SD-3) – tilting more towards SQ and sealed enclosures. Due to popular demand we have created the SLD series to add a heavily abuse tolerant “shallow” that likes ported boxes back into the line-up!
Much like the current SD-4 series we utilized solid pole-piece so the SLD can also be mounted directly against the rear enclosure wall to reduce net depth requirements. Compared to the old SD-2 we have introduced numerous important upgrades: pole-piece channels for reduced air noise & increased cooling, top-plate “slits” for better cooling and less distortion, and a magnet ID shorting ring. In terms of long-term reliability we have also bolted down the spider, bolted the motor together, bolted on the aluminum pole cap, and added “mini-XL” lead wires thus ensuring many years of flawless service.

The bottom line is if you need a relatively shallow woofer that will take a beating then the SLD is, hands-down, the woofer for you from our line. If you are looking for more SQ then look toward the SD-4 series.

Features & Technology:
• Xmax = 12mm one-way by 70% BL
• RMS Power = 600-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
• Solid Pole with vent channels around the OD
• Magnet ID shorting ring

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