Specifications
Type: High-End 3-Way Component Speaker System
Series: ESB K3 Reference Series
Configuration: 3-Way (Midbass + Midrange + Tweeter)
System Power Handling (RMS): 200 W
System Power Handling (Peak): 400 W
Nominal Impedance: 4 Ω (System)
Midbass Driver
• Size: 6.5" (165 mm)
• Cone Material: Pressed Paper Composite with Damping Resin
• Surround: Low-Mass Rubber Surround
• Voice Coil: 1.5" (38 mm) Copper
• Basket: Cast Aluminum Vibration-Damped Frame
• Frequency Range: 50 Hz – 3 kHz
Midrange Driver
• Size: 3" (76 mm)
• Diaphragm: Coated Paper with Phase Plug
• Surround: Soft Rubber Suspension
• Voice Coil: 1" (25 mm)
• Chamber Design: Rear-Damped Acoustic Housing
• Frequency Range: 300 Hz – 8 kHz
Tweeter
• Size: 1" (25 mm)
• Dome Material: Silk with Ferrofluid Cooling
• Mounting: Flush / Surface Install Hardware Included
• Frequency Range: 3.5 kHz – 22 kHz
Crossovers
• Type: External 3-Way Passive Network
• Slope: 12 dB/Octave
• Adjustable Tweeter Level: +2 dB / 0 dB / –2 dB
• Components: High-Tolerance Air-Core Coils / Poly Film Capacitors
Performance Specs
Sensitivity (1W/1m): 91 dB
Frequency Response (System): 50 Hz – 22 kHz
Recommended Amplifier Power: 75–200 W RMS per channel
Phase / Time Alignment: Passive Optimized Transition Points
Physical & Installation
Midbass Mounting Depth: 2.7" (69 mm)
Midrange Mounting Depth: 1.5" (38 mm)
Tweeter Mounting Depth: 0.8" (20 mm)
Weight (Set): 8.4 lbs
Warranty: Manufacturer 1-Year Standard
Performance Notes
• Designed for natural, studio-grade tonality with detailed imaging.
• Midrange driver provides vocal presence and soundstage precision.
• Silk dome tweeter delivers smooth, non-fatiguing high-frequency response.
• Midbass engineered for balanced punch and low distortion.
Key Features
• True 3-Way Stage – Improved imaging and tonal accuracy over 2-way systems.
• Hand-Tuned Components – Consistent matched left/right stereo staging.
• Cast-Frame Construction – Reduces resonance and distortion.
• Silk Dome Tweeter – Warm, smooth high-frequency reproduction.
• Passive Crossover Network – Transparent signal path with stable tuning.
• ESB Heritage Tuning – Voiced for realism, clarity, and musical immersion.
System Integration Notes
• Ideal Pairing: High-quality Class D or Class AB amplifier (100–200 W RMS).
• System Compatibility: Premium car audio / Harley fairing pods / custom show builds.
• Recommended Use: Front stage listening position with tweeters angled toward ear height.
• Installation Time: 1.5–2.5 hours depending on vehicle & mounting solution.
Pro Tip:
Time alignment and tweeter angle are critical—aim tweeters toward the rider/driver for focused imaging and proper stereo staging.
