SoundQubed HDCMB84 – 8" High-Output Neodymium Midbass Speaker
Massive Midbass. Exceptional Clarity. Competition-Level Performance.
Experience powerful, high-output midbass performance with the SoundQubed HDCMB84, an 8-inch professional-grade loudspeaker engineered for demanding motorcycle and automotive audio installations.
Delivering 400 watts RMS and 800 watts maximum power, the HDCMB84 combines impressive midbass response with the efficiency and performance needed for serious high-output sound systems.
Built around a high-performance neodymium motor structure and lightweight aluminum basket, this 4-ohm midbass driver delivers powerful, controlled output without the unnecessary weight of a conventional heavy-magnet design.
Built for Harley-Davidson Competition Audio
The HDCMB84 is an excellent choice for custom Harley-Davidson Tour-Pak speaker installations, particularly on competition-style baggers and high-output motorcycle audio builds where maximum output, midbass impact, and vocal clarity are essential.
Its powerful 3-inch voice coil, neodymium motor, and high-output design make it ideal for custom Tour-Pak speaker pods, rear speaker enclosures, and competition motorcycle sound systems.
The HDCMB84 also features a threaded motor assembly designed to accommodate a compatible 1-inch compression driver, providing additional flexibility for custom coaxial-style speaker configurations.
Whether you're building a show-winning Harley-Davidson bagger, a competition-focused motorcycle audio system, or a high-output custom vehicle installation, the SoundQubed HDCMB84 delivers the power, clarity, and performance serious builders demand.
Key Features
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8-inch high-performance neodymium midbass speaker
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400 watts RMS / 800 watts maximum power handling
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4-ohm nominal impedance
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Heavy-duty 3-inch voice coil
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High-performance neodymium motor structure
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Lightweight aluminum basket
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Water-resistant paper cone
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Acoustically transparent, water-resistant dust cap
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Threaded motor for compatible 1-inch compression driver integration
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Frequency response: 69Hz–6,000Hz
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92dB sensitivity (1W/1m)
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Excellent for custom Harley-Davidson Tour-Pak speaker installations
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Ideal for competition baggers and high-output motorcycle audio
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Great for custom rear speaker pods and fabricated enclosures
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Designed for powerful midbass and exceptional vocal clarity
Technical Specifications
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Brand: SoundQubed
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Model: HDCMB84
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Speaker Size: 8 Inches
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RMS Power: 400 Watts
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Maximum Power: 800 Watts
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Impedance: 4 Ohms
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Voice Coil Diameter: 3 Inches
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Magnet: Neodymium
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Basket: Aluminum
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Frequency Response: 69Hz–6,000Hz
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Sensitivity: 92dB (1W/1m)
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Mounting Depth: 4.25 Inches
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Cutout Diameter: 7.28 Inches
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Overall Diameter: 8.4 Inches
Installation Note: Custom fabrication may be required for Harley-Davidson Tour-Pak installations. Verify mounting depth, enclosure clearance, and weather protection before installation.
Available through Ultimate Marketing / UM Distributors, supplying professional 12-volt dealers and competition motorcycle audio builders.
