Specifications
Type: 2-Way Component Speaker System
Series: ESB K2 Reference Series
System Configuration: Midbass + Tweeter + External Passive Crossovers
Power Handling (RMS): 120 W
Power Handling (Peak): 240 W
Nominal Impedance: 4 Ω (System)
Sensitivity (1W/1m): 90 dB
Frequency Response (System): 55 Hz – 22 kHz
Midbass Driver
• Size: 6.5" (165 mm)
• Cone Material: Pressed Paper Composite with Damping Resin
• Surround: Rubber Low-Mass Surround
• Voice Coil: 1.25" (32 mm) Copper
• Basket: Die-Cast Aluminum Frame (Anti-Resonance Structure)
• Motor: High-Energy Ferrite Magnet
• Frequency Range: 55 Hz – 4 kHz
Tweeter
• Size: 1" (25 mm)
• Dome Material: Silk Soft Dome with Ferrofluid Cooling
• Mounting Options: Flush-Mount + Surface Angle-Mount Cups Included
• Frequency Range: 3 kHz – 22 kHz
Passive Crossovers
• Type: External 2-Way Audiophile Passive Network
• Crossover Point: ~3.2 kHz
• Slope: 12 dB/Oct (HPF / LPF)
• Components: Air-Core Inductors & Poly Film Capacitors
• Tweeter Level Adjustment: +2 dB / 0 dB / –2 dB
Physical Specifications
Midbass Mounting Depth: 2.6" (66 mm)
Midbass Cutout Diameter: 5.6" (142 mm)
Tweeter Mounting Depth: 0.9" (23 mm)
Weight (Complete System): 6.8 lbs
Warranty: 1-Year Manufacturer Warranty
Performance Specs
• Designed for high-fidelity, realistic sound with strong vocal clarity and smooth high-end response.
• Midbass cone delivers natural warmth and accurate midrange presence.
• Silk dome tweeter ensures non-fatiguing, detailed treble suitable for daily and high-volume listening.
• Crossovers tuned for consistent left-right imaging and balanced tonal character.
Key Features
• Silk Tweeter Dome – Smooth, refined treble with natural tone.
• Hand-Tuned Crossovers – Ensures phase-correct driver integration.
• Cast Aluminum Midbass Frame – Rigid and resonance-free for accuracy.
• Damped Paper Cone – Produces organic midrange and controlled midbass response.
• Adjustable Tweeter Output – Allows tuning for reflective or dead cabin environments.
• ESB Reference Voicing – Neutral, musical, and true-to-recording.
Performance Integration Notes
• Ideal Amplifier Pairing: 75–150 W RMS per channel (Class AB or Class D high-resolution).
• System Use: Premium front-stage system in car, Harley fairing, or custom studio-quality builds.
• Installation Time: 1–2 hours depending on tweeter placement.
Pro Tip:
Angle tweeters toward the listener’s seated ear height for the best stereo image and stage width—fine-tune tweeter level on crossover after listening.
