HTM1D

The HTM1D is the largest of four centre speakers in the 800 Series. It could be considered an 802D with a different aspect. The full configuration of FST™ midrange in a Marlan® sphere/tube 'head' with diamond dome tweeter on top is used so that the system perfectly matches either the 800D, 801D or 802D in a substantial and powerful multi-channel installation.

To supply the prodigious bass power necessary to keep up with these powerful main speakers, the HTM1D uses three diameter Rohacell® cone drivers with twin rear-firing Flowports™. All drivers are, of course, magnetically shielded to avoid picture distortion with CRT-based screens.

The HTM1D is specifically intended to be mounted on the floor, its low profile allowing a large projection screen to come within 600mm (2 ft) of the floor. Supplied with the system are four heavy-duty height-adjustable feet. This design allows up to 40mm (1.6 in) of vertical adjustment so that the speaker may be tilted back to face more towards the listeners. They have a case hardened spike at one end for carpeted floors, and a non-marking rubber pad on the other for more vulnerable surfaces.

Woven Kevlar
Crossover Tuning
Nautilus Tapering Tube
Flowport
Mushrooms
FST
Tweeter on Top
Matrix
Rohacell
Diamond Tweeters
Sphere / Tube Enclosure
De-Coupling
Nautilus
Technical Features	Free-mounted diamond dome tweeter
	Kevlar® brand fibre cone FST™ midrange
	Rohacell® cone bass
	Nautilus™ head
	Matrix™ cabinet
	Flowport™
	Magnetic shielding
Description	3-way vented-box system
Drive units	1x ø25mm (1 in) diamond dome high-frequency
	1x ø150mm (6 in) woven Kevlar® cone FST™ midrange
	3x ø200mm (8 in) Rohacell® cone bass
Frequency range	-6dB at 32Hz and 33kHz
Frequency response	38Hz - 28kHz ±3dB on reference axis
Dispersion	Within 2dB of reference response
Horizontal:	over 60º arc
Vertical:	over 10º arc
Sensitivity	90dB spl (2.83V, 1m)
Harmonic Distortion	2nd and 3rd harmonics (90dB, 1m)
	<1% 55Hz - 100kHz
	<0.5% 100Hz - 100kHz
Nominal Impedance	8Ω (minimum 3.7Ω)
Crossover frequencies	350Hz, 4kHz
Recommended Amplifier Power	50W - 500W into 8Ω on unclipped programme
Max. Recommended Cable Impedance	0.1Ω
Dimensions
Height:	585mm (23 in) (not including feet)
Width:	974mm (38.3 in)
Depth:	580mm (22.8 in)
Net weight	93kg (205 lb)
Finishes
Cabinet- Real Wood Veneers	Cherrywood
	Rosenut
	Black Ash
Grille	Black cloth