Genelec HT208, HT206 Operating Manual

Genelec HT208 and HT206
Active Home Theater Systems

Operating

Manual

1. General description1. General description

1. General description1. General description

1. General description

SystemSystem

SystemSystem

System

The bi-amplified GENELEC HT206 and
HT208 are two way active speakers
designed for high quality Home Theater
systems.

Designed as an active speakers, these
units contain drivers, power amplifiers,
active crossover filtering and protection
circuitry. The Directivity Control
Waveguide (DCW) technology used
provides excellent frequency balance
even in difficult acoustic environments.

DriversDrivers

DriversDrivers

Drivers

The HT208 has a 210 mm (8") bass
driver and the low frequency response
extends down to 43 Hz (-6dB). The
HT206 has a 170 mm (6

1

/2") driver with

-6dB point at 47 Hz.
The high frequency driver is a 25 mm

(1") (HT208) or a 19 mm (

3

/4") (HT206)
metal dome. The uniform dispersion
control is achieved with the
revolutionary DCW technology
pioneered by Genelec. This has also
resulted in perfect phase and delay
uniformity at the crossover frequency.
The bass and treble drivers are
magnetically shielded on both models.

CrossoverCrossover

CrossoverCrossover

Crossover

The amplifier unit contains an active
crossover. This is the ideal method for
dividing the input signal between the
driver units, allowing the overall
response of the system to be optimized
to an extent impossible with a passive
system.

To maintain uniform frequency balance
in differing acoustic environments,
three special calibrated controls are
included in the active crossover
network: treble and bass 'tilt' and bass
'roll-off' switches, which make
adjustments in 2 dB steps (see Fig. 1).

AmplifiersAmplifiers

AmplifiersAmplifiers

Amplifiers

The amplifier unit is mounted to the
rear of the speaker enclosure. Both the
bass and treble amplifiers on the HT208
produce 120 W of short term power.
The HT206 has a 80 W amplifier for the
bass and 50 W amplifier for the treble
driver. Both units incorporate protection
circuitry for driver overload protection
and amplifier thermal overload
protection. Variable input sensitivity
allows for accurate level matching to
the decoder or preamplifier.

Figure 2. Speaker acoustic axis in horizontal and vertical mounting positions.

Figure 1. Suggested tone control setting for differing acoustic environments

noitisoPgnitnuoMrekaepS

elberT

tliT

ssaB

tliT

ssaB

ffo-lloR

esnopserciohcenatalFenoNenoNenoN

moordepmadanignidnatseerFenoNBd2-enoN

moortnarebreveranignidnatseerFenoNBd4-Bd2-

renrocanIenoNBd4-Bd4-

tenibacanIenoNBd2-Bd2-

HT208 also features an "autostart"
function. "Autostart" turns off the
amplifier if there is no signal present for
about 5 minutes. When the signal
returns the amplifier switches on
immediately and the speaker functions
normally. This function should be
enabled when the speaker is left turned
on even when not in use; power is
saved when the amplifier is switched
off. An indicator LED on the DCW plate
shows the system status.

"Autostart" can be enabled or disabled
as required by using the dip switch on
the speaker back panel (see fig.4).

2. Installation2. Installation

2. Installation2. Installation

2. Installation

Place the loudspeaker in its required
position, taking note of the line of the
listening axis (see figures 2 and 3). To
ensure cooling, there should be a
clearance of more than 4" (10 cm)
between speaker backplate and any
solid surface. Before connecting up,
ensure that the mains switch is off (see
figure 4). Check that the mains voltage
selector is correctly set and that the
appropriate fuse is fitted.

Figure 3. Recommended speaker
alignment in a 5.1-channel Surround
Sound System.

Audio input is made via a 10 kOhm
balanced (XLR) OR unbalanced (RCA)
connector (see fig. 4). If the signal
source has suitable balanced outputs,
we recommend the use the XLR
connector and balanced interconnect
cables due to their better resistance to
interference. Once connection has
been made, the speakers are ready to
be powered-up.

Setting the input sensitivitySetting the input sensitivity

Setting the input sensitivitySetting the input sensitivity

Setting the input sensitivity

Adjustment of the input sensitivity of
each speaker can be made to match
that of the decoder or other source, by
use of the input sensitivity control on
the rear panel (see figure 4). A small
screwdriver is needed for the
adjustment. The manufacturer default
setting for this control is -6 dBu (fully
clockwise) which gives SPL of 100 dB
@1m with -6 dBu input level. Note that
to get the full output level of 110 dB
SPL, an input level of +4 dBu is needed
in this setting.

Setting the tone controlsSetting the tone controls

Setting the tone controlsSetting the tone controls

Setting the tone controls

The acoustic response of the system
may also have to be adjusted to match
the acoustic environment. The
adjustment is done by setting the three
tone control switches 'treble tilt', 'bass
tilt' and 'bass roll-off' on the rear panel
of the amplifier. The manufacturers
default settings for these controls are
'All Off' to give a flat anechoic response.
See Figure 1 for suggested tone control
settings in differing acoustic
environments. Figures 5 and 6 show

the effect of the controls on the
anechoic response. Always start
adjustment by setting all switches to
the 'OFF' position. Then set only one
switch to the 'ON' position to select
response curve needed. If more than
one switch is set to 'ON' (within one
switch group) the attenuation value is
not accurate.

Vertical / horizontal mountingVertical / horizontal mounting

Vertical / horizontal mountingVertical / horizontal mounting

Vertical / horizontal mounting

The speakers are normally delivered
for vertical mounting. If horizontal
mounting is needed the DCW plate
can be rotated so that the GENELEC
logo is located at the bottom left corner
of the DCW. Remove the four corner
screws of the DCW and pull the plate
carefully out without stressing the wires
and the gasket. Rotate the plate 90
degrees to the appropriate direction
and remount the screws. Note that to
obtain a mirror image pair the DCW's
must be rotated 90° in opposite
directions on both speakers. In
horizontal mounting position the bass
drivers should point inwards to get
better low frequency summing.

Figure 4. HT208 rear panel layout.

Status indicator LEDStatus indicator LED

Status indicator LEDStatus indicator LED

Status indicator LED

The status indicator LED on the HT208
changes colour to indicate amplifier
status. If the LED is yellow, it indicates
that the "autostart" function has turned
the amplifier off. The amplifier returns
to "ON" mode and the LED changes to
green colour automatically when the
signal returns. If the LED turns red, it
indicates that the amplifier thermal
protection circuit has been activated.
Let the amplifier cool down and check
that there is sufficient clearance around
the amplifier for cooling.

The HT206 does not have the autostart
function, so it has only a green "ON"­LED to indicate that the power has
been switched on.

3. Maintenance3. Maintenance

3. Maintenance3. Maintenance

3. Maintenance

There are no user serviceable parts
within the loudspeaker. Any
maintenance or repair should only be
undertaken by qualified service
personnel. Ensure that if fuse
replacement is required, only fuses of
the appropriate voltage and current
ratings are used. REMEMBER to
disconnect the power supply by
removal of the mains cable before fuse
replacement.

4. Safety Considerations4. Safety Considerations

4. Safety Considerations4. Safety Considerations

4. Safety Considerations

1. Servicing and adjustment must
only be performed by qualified
service personnel. Opening the
amplifier's rear panel is strictly
prohibited.

2. It is forbidden to use this product
with an unearthed mains cable,
which may lead to personal injury.

3. To prevent fire or electric shock,
do not expose the unit to water or
moisture.

WARNING!WARNING!

WARNING!WARNING!

WARNING!

This equipment is capable ofThis equipment is capable of

This equipment is capable ofThis equipment is capable of

This equipment is capable of
delivering Sound Pressure Levels indelivering Sound Pressure Levels in

delivering Sound Pressure Levels indelivering Sound Pressure Levels in

delivering Sound Pressure Levels in
excess of 85 dB, which may causeexcess of 85 dB, which may cause

excess of 85 dB, which may causeexcess of 85 dB, which may cause

excess of 85 dB, which may cause
permanent hearing damage.permanent hearing damage.

permanent hearing damage.permanent hearing damage.

permanent hearing damage.

5. Guarantee5. Guarantee

5. Guarantee5. Guarantee

5. Guarantee

This product is supplied with a two
year guarantee against manufacturing
faults or defects that might alter the
performance of the unit. Refer to
supplier for full sales and guarantee
terms.

Figure 5. The effect of the 'treble tilt', 'bass tilt' and 'bass roll-off'
controls on the free field response of the HT208.

SYSTEM SPECIFICATIONSSYSTEM SPECIFICATIONS

SYSTEM SPECIFICATIONSSYSTEM SPECIFICATIONS

SYSTEM SPECIFICATIONS

Figure 6. The effect of the 'treble tilt', 'bass tilt' and 'bass roll-off'
controls on the free field response of the HT206.

HT206HT206

HT206HT206

HT206

HT208HT208

HT208HT208

HT208

Free field frequency response of system: 55 Hz - 18 kHz (±2,5 dB) 48 Hz - 22 kHz (±2 dB)
Maximum peak acoustic output per pair

@ 1m measuring distance with music material: >115 dB SPL >120 dB SPL
Self generated noise level in free field @ 1m on axis: <10 dB (A-weighted) <10 dB (A-weighted)
Drivers Bass: 170 mm (61/2") 210 mm (8")

Treble: 19 mm (3/4") metal dome 25 mm (1") metal dome
Magnetic shielding: Standard Standard

Bass amplifier output power: Short term 80 W Short term 120 W
Treble amplifier output power: Short term 50 W Short term 120 W

Amplifier system distortion at nominal output

THD: <0.08% <0.05%
SMPTE-IM: <0.08% <0.05%
CCIF-IM: <0.08% <0.05%
DIM 100: <0.08% <0.05%

Harmonic distortion at 90 dB SPL @ 1 m on axis:

< 3% (60...150 Hz) < 1% (50...100 Hz)
< 0,5% (> 150 Hz) < 0,5% (>100 Hz)

Input impedance: 10 kOhm 10 kOhm
Crossover frequency: 3.5 kHz 2.2 kHz

Treble tilt control in 2dB steps from +2 to -4dB & MUTE: @15 kHz @15 kHz
Bass roll-off control in 2 dB steps from 0 to -8 dB: @50 Hz @40 Hz
Bass tilt control in 2 dB steps from 0 to -6 dB & MUTE: @100 Hz @80 Hz

Mains voltage: 100/200V or 115/230V 100/200V or 115/230V
Power consumption (Idle / Full output): 20 / 100 W 30 / 160 W

Weight: 7,6 kg (17 Ib.) 12,7 kg (28 Ib.)
Dimensions Height: 312 mm (12 1/4") 395 mm (15 9/16")

Width: 200 mm (7 7/8") 250 mm (9 7/8")
Depth: 240 mm (9 7/16") 290 mm (11 7/16")

Genelec Document DRHT208001Genelec Document DRHT208001

Genelec Document DRHT208001Genelec Document DRHT208001

Genelec Document DRHT208001

COPYRIGHT GENELEC OY 1999COPYRIGHT GENELEC OY 1999

COPYRIGHT GENELEC OY 1999COPYRIGHT GENELEC OY 1999

COPYRIGHT GENELEC OY 1999

All data subject to change without prior noticeAll data subject to change without prior notice

All data subject to change without prior noticeAll data subject to change without prior notice

All data subject to change without prior notice

Note! All frequency response curves were measured in a
calibrated, 12 m cube, anechoic chamber at 1 m using grade
1 measuring equipment. Input signal levels were set at -20
dBu. The anechoic chamber error in the free field response
is less than 0.5 dB down to 60 Hz.

Genelec Oy, Olvitie 5
FIN - 74100 IISALMI, FINLAND
Phone: + 358 17 83 881
Fax: [phone]
Email: [e-mail]
Web: www.genelec.com

Genelec Inc., 7 Tech Circle
NATICK, MA 01760, U.S.A.
Phone: [phone]
Fax: [phone]
Email: [e-mail]