Small wonder
803 D4 may be notably more compact than the 801 D4 or 802 D4, but it still bristles with technical innovation, most obviously in its use of a three-box construction. Its 130mm (5-in) midrange cone is carefully isolated from the impact of its bass cones thanks to its Turbine Head enclosure.
Reverse Wrap cabinet
Instead of a conventional loudspeaker box, our cabinets are made from a continuous curved section of wood, with the drive units mounted at the heart of the curvature. This stiffer, more inert structure resists mechanical resonances far better and also ensures better dispersion of sound.
Feature Set Includes:
- Diamond tweeter
Solid body Tweeter-on-Top
Continuum™ cone FST
Matrix™
Anti-Resonance plug
Biomimetic Suspension
Turbine™ Head
Aerofoil™ cone bass units
Flowport - Description 3-way vented-box system
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Drive units 1x ø25mm (1in) Diamond dome high-frequency
1x ø130mm (5in) Continuum cone FST midrange
2x ø180mm (7in) Aerofoil cone bass units
- Frequency range 16Hz to 35kHz
- Frequency response 19Hz to 28kHz (+/-3dB from reference axis)
- Sensitivity 90dB (on axis at 2.83Vrms at 1m)
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Harmonic distortion 2nd and 3rd harmonics (90dB, 1m on axis)
<1% 80Hz – 20kHz
<0.3% 100Hz – 20kHz
- Nominal impedance 8Ω (minimum 3.0Ω)
- Recommended amplifier power 50W – 500W into 8Ω on un-clipped program