SoundQubed HDX4 15" Subwoofer - HDX415

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SoundQubed HDX4 15" Subwoofer - HDX415

HDX subwoofers build upon the design of the HDC line in response to recent shifts in source material and the mainstream frequency tuning of our customers’ vehicles. Our team scrutinized all aspects of the HDC subs to improve performance at lower frequencies. The resulting HDX dual voice coil competition subwoofer line is more efficient, plays lower, and sounds better setting a new bar for performance and value.

INCREASED EXCURSION

The new cast basket accommodates larger diameter spiders, providing more room for cone and spider travel. Heat dissipates more quickly with greater movement and a more open airflow path.

New spiders with more, higher rolls take advantage of the increased suspension travel. This extra material in the spiders increases the freedom of movement, lowering the Fs, while maintaining durability over time.

The subwoofer’s surround profile is higher, reducing material stress while increasing excursion. Cone area and moving mass remain virtually the same, as opposed to inner-tube surrounds popping up here and there.

INCREASED STRENGTH AND DURABILITY

A fiberglass-reinforced pulp cone meets the strength demands of the increased excursion. A non-press cone formation process increases the cross-section area of the cone walls for more rigidity without adding extra mass.

The voice coils feature high-quality, American-made wire and adhesives increasing the thermal working range of the coil. Additionally, thicker, black-anodized aluminum formers increase thermal transfer from the coil wire.

The HDX line makes it easier to tune low-frequency pressure into a system without sacrificing impact. HDX subs allow you to explore design choices with high efficiency, making the most of amplifier power and electrical resources.

 Specifications 
Model HDX412 HDX415 HDX418
RMS Power 2000 W 2000 W 2000 W
Peak Power 6000 W 6000 W 6000 W
Magnet Weight 403 oz 403 oz 403 oz
Coil Diameter 4" 4" 4"
Woofer Size 12" 15" 18"
F(s) 30.95 Hz 29.61 Hz 22.8 Hz
Impedance D1 D1 D1
Z(max) 21.2 Ohms 22.43 Ohms 19.3 Ohms
Q(ms) 3.664 4.047 4.568
Q(es) 0.344 0.3658 0.4852
Q(ts) 0.3145 0.3355 0.4386
V(as) 24.93 Liters 55.04 Liters 163.3 Liters
L(e) 0.7672 0.8143 2.477
n(0) 0.21% 0.37% 0.38%
M(ms) 422 grams 500.3 grams 616.8 grams
C(ms) 0.063 0.058 0.078
Sensitivity (1W/1m) 85.22 dB 87.81 dB 87.95dB
BL 20.84 21.75 18.4
Xmax 21 21 31
Sd 260.4 mm 323.9 mm 393.7 mm
Displacement 0.2³ 0.22³ 0.32³
Mounting Depth 8 5/8" 9 3/8" 11 5/8"
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 HDX4 15" Subwoofer?
A: A premium 15-inch subwoofer designed for extreme bass output and unparalleled sound clarity in car audio systems.

Q: How much power can it handle?
A: It can handle up to 1200W RMS, delivering powerful and deep bass with exceptional low-end performance.

Q: Is it compatible with my car audio setup?
A: Yes, perfect for both sealed and ported enclosures, making it highly versatile for different audio builds and configurations.

Q: What makes the HDX4 15" Subwoofer stand out?
A: Features advanced high excursion technology, a durable design, and superior cooling to maximize output and maintain reliability.

Q: Why choose the HDX4 15" Subwoofer?
A: Ideal for those seeking massive bass with precision and clarity, combining durability and top-tier performance for car audio enthusiasts.

 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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