SoundQubed HDX4.2-18D1 18 Inch Car Subwoofer – 4000W/8000W RMS Dual 1 Ohm 🔊
🔥 Powerful Performance. Experience exceptional low-frequency output with the SoundQubed HDX4.2-18D1 18 Inch Car Subwoofer competition subwoofer.
This 18 Inch Car Subwoofer handles 4,000 watts RMS and 8,000 watts maximum power.
Designed for demanding SPL applications, this powerful driver supports serious high-output car audio systems.
Its dual 1-ohm voice coils offer versatile wiring configurations for compatible amplifiers.
🎵 Sound Quality and Performance
The HDX4.2-18D1 features a 31.6Hz resonant frequency and 90.3dB sensitivity.
Its 23mm one-way Xmax supports significant cone movement during demanding bass reproduction.
The oversized 4-inch voice coil supports high-power operation in properly configured systems.
Its large cone surface helps move substantial air for deep, powerful bass.
🛠️ Construction and Design
A die-cast aluminum basket provides structural support for the heavy-duty driver assembly.
The motor features a massive 402-ounce magnet assembly.
Its 4-inch voice coil includes a 70mm winding length.
The 11.34-inch mounting depth requires substantial clearance inside a properly constructed enclosure.
🔌 Installation and Compatibility
Dual 1-ohm voice coils allow 0.5-ohm parallel wiring or 2-ohm series wiring.
Choose an amplifier rated for the selected impedance and appropriate continuous power.
High-power installations require careful electrical system planning.
Verify enclosure volume, mounting clearance, amplifier stability, and vehicle electrical capacity before installation.
⚡ Key Features and Specifications
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🔊 Brand: SoundQubed
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📦 Model: HDX4.2-18D1
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📏 Speaker Size: 18 inches
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⚡ RMS Power: 4,000 watts
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🔥 Maximum Power: 8,000 watts
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🔌 Impedance: Dual 1 Ohm
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🎵 Voice Coil Diameter: 4 inches
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🧲 Magnet Weight: 402 ounces
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📐 Mounting Depth: 11.34 inches
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🎶 Resonant Frequency: 31.6Hz
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📈 Sensitivity: 90.3dB
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🔧 Xmax: 23mm one-way
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📦 Sold Individually
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❓ Frequently Asked Questions
1. What amplifier works with the HDX4.2-18D1?
Choose an amplifier supporting 0.5-ohm or 2-ohm operation, depending on the wiring configuration.
Match continuous amplifier output to the subwoofer's RMS rating.
2. What enclosure size does this subwoofer require?
Suggested sealed enclosures range from 3 to 5.75 cubic feet net.
Suggested ported enclosures range from 5 to 7 cubic feet net.
3. Does this subwoofer include an amplifier or enclosure?
No amplifier or enclosure is included with this standalone driver.
Additional installation components must be purchased separately.
