SoundQubed HDX3 12" Series Subwoofer - HDX312-D1

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Brand: SoundQubed
SKU: HDX312-D1
$427.99
$449.95
$427.99
Ohm Load: D1
Subtotal: $427.99
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SoundQubed HDX3 12" Series Subwoofer - HDX312-D1

The HDX3 series heavy-duty subwoofer is well suited for use as a competition subwoofer with a beefy, monstrous, made in the USA dual voice coil! Find it in 12 inch, 15 inch and 18 inch sizes!

The HDX3 can handle 1500 Watts RMS power and 4500 Watts Peak power for burps.

HDX3’s motor features a thick top plate, high motor force, and a tight gap for high-efficiency speaker design. A taller 4-spoke, cast aluminum frame makes room for a larger diameter spider for lower tuning and greater accuracy. The larger diameter spider’s new roll profile allows for low F’s without sacrificing power handling or control.

The HDX3’s taller and wider surround allows for even more precise excursion and new pulp-blend cones are stronger than previous fiberglass-laminate designs- And they’re lighter too!

We are ditching the stitching on the 1500 Watt Power Band.
Other improvements over the HDC series subwoofers include the presence of a thicker, more robust aluminum former, as well as black anodizing. Double slit venting and a higher temperature resin are included for increased cooling abilities, enhanced performance, and a longer subwoofer life.

 Specifications 
Model HDX312 HDX315 HDX318
RMS Power 1500 W 1500 W 1500 W
Peak Power 4500 W 4500 W 4500 W
Magnet Weight 300 oz 300 oz 300 oz
Coil Diameter 3" 3" 3"
Coil Length 50 mm 50 mm 50 mm
Usable Throw 68 mm 68 mm 68 mm
Woofer Size 12" 15" 18"
F(s) 26.92 Hz 26 Hz 27.59 Hz
Impedance D1 / D2 D1 / D2 D1 / D2
Z(max) 70.16 Ohm 63.8 Ohm 55.47 Ohm
Q(ms) 4.95 4.847 5.777
Q(es) 0.3409 0.3665 0.4724
Q(ts) 0.3189 0.3408 0.4367
V(as) 28.59 Liters 78.08 Liters 168.6 Liters
L(e) 2.553 2.711 2.563
n(0) 15.60% 33.96% 71.46%
M(ms) 440.9 grams 472.8 grams 410.9 grams
C(ms) 0.079 0.082 0.081
Sensitivity 1W/1m 84.03 dB 87.41 dB 90.64 dB
BL 31.45 30.49 25.14
Xmax 36mm 36mm 36mm
Sd 0.051 m2 0.082 m2 .121 m2
Displacement 0.16³ 0.18³ 0.23³
Mounting Depth 8 7/8" 9 1/2" 10.5"
Circle Cutout 11 1/2" 13 7/8" 16 9/16"
Ported Enclosure (Cu Ft): 1.75-2.75 FT³ 3-6 FT³ 5-7 FT³
What Our Experts Think 
  • High-Excursion Design: Delivers powerful bass response with minimal distortion.

  • Dual 2-ohm or 4-ohm Voice Coils: Offers wiring flexibility to match various amplifier configurations.

  • Rugged Construction: Built with a reinforced cone and durable surround to withstand high power levels.

  • Ideal for Ported Enclosures: Performs optimally in ported boxes, enhancing bass output and efficiency.

  • Versatile Application: Suitable for both daily driving and SPL competitions, providing a balance between sound quality and output.

 Q&A  

Q: What is the SoundQubed HDX3 12" Subwoofer?
A: A high-performance 12-inch subwoofer designed for deep, powerful bass and exceptional sound clarity in car audio systems.

Q: How much power can it handle?
A: It can handle up to 800W RMS, providing robust, dynamic bass with outstanding low-frequency response.

Q: Is it compatible with my car audio setup?
A: Yes, it's perfect for both sealed and ported enclosures, offering great flexibility for different system configurations.

Q: What sets the HDX3 apart?
A: Features high excursion capabilities, a rugged design, and advanced cooling for maximum output and reliability.

Q: Why choose the HDX3 12" Subwoofer?
A: Ideal for audio enthusiasts seeking deep bass and superior sound quality, with the durability to withstand high power demands.

Maintenance Tips   
  • Proper Break-In: Follow the manufacturer's recommended break-in procedure to loosen the suspension and ensure long-term performance.

  • Enclosure Selection: Choose an appropriate enclosure type—sealed, ported, or band-pass—and size it correctly to match the subwoofer's specifications for optimal sound quality.

  • Wiring and Amplification: Use high-quality wiring and ensure proper impedance matching between the subwoofer and amplifier to prevent damage and achieve the best performance.

  • Regular Inspection: Periodically check the subwoofer for any signs of wear or damage, such as tears in the cone or loose connections, and address issues promptly to maintain optimal performance.

  • Avoid Overpowering: Do not exceed the subwoofer's rated power handling to prevent potential damage.

  • Environmental Considerations: Keep the subwoofer dry and avoid exposure to moisture to prevent damage to the components.

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