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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 (this remains true for the SD-4 series as well). Due to popular demand we 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.
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Features
- Xmax = 12mm one-way by 70% BL
- Xmech is a hard limit of 25mm one-way (being over 2x the Xmax it is a very generous limit)
- 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 high velocity vent channels machined around the OD
- Vented, EMD Cut, Top-Plate Design
- 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
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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
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Sealed Enclosure 0.5 cu ft Ported Enclosure 1.0 cu ft Recommended Tuning 35Hz Recommended Port Area 15 sq in Displacement Depth 4.9" Outside Diameter 10.5″ Cut-Out 9.25″
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| Shipping | Most items ship within 1–3 business days. Delivery time varies by item, vendor, and destination. |
Need help before ordering? Contact Droppin HZ and we can help confirm fitment, power needs, or supporting gear for your build.
Description
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 (this remains true for the SD-4 series as well). Due to popular demand we 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
- Xmax = 12mm one-way by 70% BL
- Xmech is a hard limit of 25mm one-way (being over 2x the Xmax it is a very generous limit)
- 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 high velocity vent channels machined around the OD
- Vented, EMD Cut, Top-Plate Design
- 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 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 1.0 cu ft Recommended Tuning 35Hz Recommended Port Area 15 sq in Displacement Depth 4.9" Outside Diameter 10.5″ Cut-Out 9.25″
-
Shipping
| Shipping | Most items ship within 1–3 business days. Delivery time varies by item, vendor, and destination. |
Need help before ordering? Contact Droppin HZ and we can help confirm fitment, power needs, or supporting gear for your build.
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Subwoofers perform best when the enclosure, amplifier, impedance, wiring, and electrical support all work together. Use these links to complete the system around this product.
