Specifications
Type: 2-Way Component Speaker System
Series: ESB K2 Reference Series
System Configuration: Midbass + Tweeter + External Tweeter Crossover
Power Handling (RMS): 100 W
Power Handling (Peak): 200 W
Nominal Impedance: 4 Ω (System)
Sensitivity (1W/1m): 90 dB
Frequency Response (System): 60 Hz – 22 kHz
Midbass Driver
• Size: 6.5" (165 mm)
• Cone Material: Damped Paper Composite Cone
• Surround: Low-Mass Rubber Surround for natural midrange control
• Voice Coil: 1.25" (32 mm) High-Temperature Copper
• Basket: Rigid Stamped Steel Anti-Resonance Frame
• Magnet: High-Energy Ferrite Motor Assembly
• Frequency Range: 60 Hz – 4 kHz
Tweeter
• Size: 1" (25 mm)
• Dome Type: Silk Dome Tweeter (Smooth and non-fatiguing)
• Cooling: Ferrofluid Voice Coil Cooling
• Mounting Options: Surface / Flush Mount Hardware Included
• Working Range: 3 kHz – 22 kHz
Crossover Network
• Type: External Tweeter High-Pass Crossover
• Crossover Point: ~3.5 kHz
• Slope: 12 dB / Octave
• Components: Poly Film Capacitors + Air-Core Inductor
• Tweeter Level Adjustment: Standard Output (Fixed)
Physical Dimensions
Midbass Mounting Depth: 2.5" (63 mm)
Midbass Cutout Diameter: 5.6" (142 mm)
Tweeter Mounting Depth: 0.9" (23 mm)
Weight (System): 5.4 lbs
Warranty: 1-Year Manufacturer Warranty
Performance Specs
• Balanced, natural tonal character optimized for everyday music listening.
• Paper composite cone delivers warm midrange and accurate vocal reproduction.
• Silk dome tweeter provides smooth, detailed high frequencies without harshness.
• Crossover ensures clean driver transition and stable stereo imaging.
Key Features
• Silk Soft-Dome Tweeter – Smooth high-frequency detail.
• Damped Paper Midbass Cone – Natural midrange and clear vocals.
• 12 dB High-Pass Tweeter Network – Protects tweeter and ensures clean treble.
• High Sensitivity Efficiency – Performs well on factory head units or aftermarket amplifiers.
• ESB Reference Tuning – Musical, warm, and realistic sound signature.
Performance Integration Notes
• Ideal Amplifier Pairing: 75–125 W RMS per channel (AB or D-Class).
• Best Use: Front-stage upgrade in Harley fairings, UTV dashes, sedans, or coupes.
• Recommended High-Pass Filter: 65–80 Hz for maximum clarity and speaker longevity.
• Installation Time: ~1 hour depending on tweeter mounting location.
Pro Tip:
Angle tweeters toward the listener’s ear position to open up the soundstage and improve imaging — especially important in motorcycle fairings or low door tweeter installations.
