Diamond DA1423SGSP4

The DA1423SGSP4 is a high-SPL (Sound Pressure Level) competition-grade audio overhaul. Engineered specifically for the Road-Glide/Street-Glide sharknose and batwing platforms, this Stage 4 kit moves beyond simple “upgrades” into full-scale sonic reinforcement. By combining high-efficiency Class-D amplification with carbon-fiber reinforced transducers, Diamond Audio ensures your frequency response remains linear and powerful even at 80+ MPH.

Detailed Component Specifications

1. Front Fairing Speakers: HXM65 (6.5″ Coaxial)

• Power Handling: 150W RMS / 300W MAX

• Tweeter: 1″ (25mm) Integrated Bridge-Mounted Titanium Dome

• Cone Material: Carbon Fiber Reinforced Polypropylene

• Sensitivity: 92dB @ 1W/1m

• Crossover: 12dB/Octave Integrated Linkwitz-Riley

2. Saddlebag Speakers: HXM69 (6″ x 9″ Coaxial)

• Power Handling: 170W RMS / 340W MAX

• Motor Structure: High-Flux Y35 Strontium Ferrite Magnet

• Environmental: IP65 Rated Marine Grade (UV/Salt/Fog Resistant)

• Frequency Response: 45Hz – 20kHz

• Mounting: Requires 6×9 Lid Cut-In Kit (Included in Stage 4)

3. Main Amplifier: MICRO Series 4-Channel

• Circuitry: Full Range Class D (High Efficiency)

• RMS Power (4Ω): 80W x 4

• RMS Power (2Ω): 150W x 4

• S/N Ratio: >90dB

• Protection: Thermal, Short Circuit, and Low Voltage