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Description

DS18 ZR8.4D

The ZR8.4D is an 8‑inch dual‑voice‑coil (DVC) car subwoofer engineered to deliver deep, punchy bass and solid low‑frequency performance in compact and full‑range car audio systems. Featuring dual 4 Ω voice coils (4 + 4 Ω) for flexible wiring with amplifiers, it handles 450 W RMS and up to 900 W peak power with controlled output and reliability. The subwoofer uses a 2″ aluminum voice coil former with copper winding, a non‑pressed paper cone, PPI dust cap, foam surround, and a 55 oz ferrite magnet mounted in a matte black steel basket, producing rich bass from approximately 33 Hz to 200 Hz with 82 dB sensitivity. With a recommended low‑pass crossover around 120 Hz, the ZR8.4D integrates cleanly into sealed or ported enclosures, making it a versatile choice for car audio enthusiasts seeking deep, impactful low end in an 8″ package.


Specifications

Category Specification
SKU ZR8.4D
Nominal Diameter 8″ / 203.3 mm
Nominal Impedance 4 + 4 Ohm
RMS Power Handling 450W
Maximum Power Handling 900W
Sensitivity (1W/1m) 82 dB
Frequency Response 33–200 Hz
Recommended Lo Pass Crossover 120 Hz

Motor
Parameter Specification
Voice Coil Diameter 2″ / 50.8 mm
Voice Coil Former Material Aluminum
Winding Material Copper
Cone Material Non-Pressed Paper
Dust Cap Material PPI
Surround Material Foam
Basket Material Steel
Basket Color/Finish Black Matte
Magnet Material Ferrite
Magnet Weight 55 oz
Displacement Volume 0.03 ft³

Thiele & Small Parameters
Parameter Specification
Equivalent Volume (Vas) 5.33 L
Free Air Resonance (Fs) 45 Hz
Mechanical Factor (Qms) 4.7
Electrical Factor (Qes) 0.745
Total Factor (Qts) 0.643
Moving Mass (Mms) 97 g
Compliance (Cms) 97.58 µm/N
Bl Factor (BI) 9.48
Voice Coil Inductance (Le) 551.18 mH
Diaphragm Area (Sd) 196 cm²
DC Resistance (Re) 3.4 + 3.4 Ohm
Efficiency Bandwidth Product (EBP) 60.4

Measurements
Parameter Specification
Overall Diameter 8.42″ / 214 mm
Overall Depth 5.3″ / 134.8 mm
Front Mount Baffle Cutout 7.24″ / 184 mm
Mounting Depth 4.4″ / 111.8 mm
Motor Diameter 5.7″ / 145 mm
Gross Single Unit Weight 10.5 lb
Dimensions (W x L x H) 9.5 x 9.5 x 6.5 in
Quantity of Units in Master Carton 2
Gross Master Carton Weight 21.5 lb
Master Carton Dimensions (W x L x H) 10 x 10 x 13.75 in

 


Product Overview

8” Car Subwoofer 900W 4-Ohm DVC

Introducing the DS18 ZR8.4D, a true powerhouse designed to deliver mind-blowing bass and precision performance.
The ZR subline is renowned for its exceptional performance, and the ZR8.4D is no exception. With a robust 900W of MAX power handling and 450W of RMS power handling, the ZR8.4D guarantees a spine-tingling audio experience that will leave you craving for more. Its 2-inch high-strength aluminum voice coil ensures that every note is delivered with precision and clarity, elevating your car audio system to new heights. Its 4+4 ohm dual voice coil configuration allows you to match your amplifier’s optimal impedance, providing maximum power transfer and efficiency.
With DS18’s ZR8.4D, you don’t just get exceptional performance; you also get unmatched style and unbreakable durability. The ZR8.4D features a strong stamped basket that not only provides structural integrity but also showcases show-quality DS18 logos on the frame, magnet boot, magnet, and dust cap. Its matte black finish adds a touch of elegance, making it a visually stunning addition to any car audio setup.
With a frequency response ranging from 33Hz to 200Hz and a sensitivity of 82 dB, the ZR8.4D captures every nuance of your music, delivering it with crystal-clear precision. The recommended low-pass crossover of 120Hz ensures seamless integration with your existing audio system, allowing your music to shine in all its glory.
With its striking design, exceptional performance, and versatility, the ZR8.4D is the perfect choice for car audio enthusiasts who demand nothing but the best.

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Questions and Answers

Q1: What size is the ZR8.4D subwoofer?
A1: It’s an 8‑inch dual voice‑coil car subwoofer.
Q2: How much power can this subwoofer handle?
A2: The ZR8.4D handles 450 W RMS and up to 900 W peak power.
Q3: What is the impedance and voice coil setup?
A3: It has dual 4 Ω voice coils (4 + 4 Ω) for flexible wiring with amplifiers.
Q4: What frequency range does the ZR8.4D cover?
A4: It delivers bass from approximately 33 Hz to 200 Hz.
Q5: What materials/features help its performance?
A5: It uses a 2″ aluminum voice coil former, non‑pressed paper cone, foam surround, 55 oz ferrite magnet, and a sturdy matte black steel basket for reliable bass output.

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