HTM81 D4

Technical features
Diamond tweeter
Solid body Tweeter-on-Top
Continuum™ cone FST
Anti-Resonance plug
Biomimetic Suspension
Matrix™
Aerofoil™ cone bass units
Flowport

Description
3-way vented-box system

Drive units
1x ø25mm (1in) diamond dome high-frequency
1x ø150mm (6in) Continuum cone FST midrange
2x ø200mm (8in) Aerofoil cone bass units

Frequency range
20Hz to 35kHz

Frequency response
28Hz to 28kHz (+/-3dB from reference axis)

Sensitivity
90dB (on axis at 2.83Vrms at 1m)

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 unclipped programme

Max. recommended cable impedance
0.1Ω

Dimensions
Height: 334mm
Width: 847mm
Depth: 371mm

Net weight
32.20kg

Finishes
Cabinet:
Gloss Black
White

Grille:
Black
Grey