Diamond Audio 8" MP Series 2-Way Full-Range Coaxial Speaker w/1" Horn Tweeter (4Ω) - MP84

Diamond Audio MP84 — 8" 2-Way Full-Range Coaxial Speaker with 1" Horn Tweeter (4Ω)

The Diamond Audio MP84 is an 8" 2-way coaxial speaker engineered for riders, boaters, and adventurers who need high-output, full-range audio in demanding environments. Part of the MP Series lineup, the MP84 steps up to a 2" high-temp voice coil and extends the low-end response down to 80Hz — delivering 200W RMS with 103dB sensitivity (1W/1M) for powerful, efficient output that cuts through wind and engine noise at highway speeds.

Designed for Harley Davidson motorcycles, boats, and recreational vehicles, the MP84's NEO magnet motor, 1" horn-style tweeter with replaceable diaphragm, and heavy-duty steel basket are built to perform in high-vibration, high-exposure environments. Water-resistant construction ensures long-term durability wherever the road or water takes you.

Key Features

• NEO magnet structure for lightweight, high-efficiency motor design
• 1" horn-style tweeter with replaceable tweeter diaphragm for long-term serviceability
• Heavy-duty steel basket for rigidity and vibration resistance
• 2" high-temp 4Ω voice coil for high power handling and heat dissipation
• 103dB sensitivity (1W/1M) — exceptional output from low-powered amplifiers
• Extended low-end response: 80Hz – 18kHz for fuller bass from a coaxial
• 12dB 2nd Order crossover for tweeter protection
• Water-resistant construction (not waterproof)
• Compatible with Harley Davidson, marine, and RV applications

Specifications

Thiele/Small Parameters

• Power Handling: 200W RMS / 400W MAX
• SPL (dB) MidBass: 95.2
• SPL (dB) Tweeter: 107
• Sensitivity: 103dB (1W/1M)
• Frequency Response: 80Hz – 18kHz
• Re (Ω): 3.2
• Qms: 12.46
• Qes: 0.42
• Qts: 0.41
• Fs (Hz): 69.43
• Vas (L): 27.5
• Cms (mm/N): 0.43
• Mms (g): 12.3
• Sd (cm²): 213.8
• BL (T*M): 6.4
• Xmax (mm): 1.0
• Crossover: 12dB 2nd Order Filter

Voice Coil

• Mid Driver: 2" Single Layer High Temp 4Ω Voice Coil
• Tweeter: 1.0" 8Ω Single Layer High Temp Voice Coil

Dimensions

• Diameter: 8.31" (211mm)
• Mounting Diameter: 7.09" (180mm)
• Mounting Depth: 3.98" (101mm)
• Total Depth: 4.25" (108mm)
• Magnet Diameter: 4.06" (103mm)

Disclaimer: The MP84 speakers are water-resistant, not waterproof. Avoid prolonged exposure to large amounts of water to prevent damage.