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HT206B, HT208B and HT210B Active Home Theater Systems
System
The
bi-amplifi ed
GENELEC
HT208B and HT210B are two way active
speakers de signed for high quality Home
Theater installations.
Designed as active speakers, these units
contain drivers, power am pli fi ers, active
crossover fi ltering and protection circuitry.
The Directivity Control Waveguide™ (DCW™)
technology provides excellent frequency bal-
ance even in diffi cult acoustic environments.
Drivers
The HT210B has a 250 mm (10") bass driver
and the low frequency response extends
down to 36 Hz (-6 dB). The HT208B has
a 210 mm (8") bass driver with -6 dB point
at 43 Hz and the HT206B a 170 mm (6
driver with -6 dB point at 47 Hz.
The high frequency driver is a 25 mm
(1") (HT210B, HT208B) or a 19 mm (
(HT206) metal dome. The uniform dispersion
control is achieved with the rev o lu tion ary
DCW technology pioneered by Genelec.
The DCW also provides perfect phase and
delay uniformity at the crossover frequency.
The bass and treble drivers are magnetically
shielded on all models.
Crossover
The amplifi er unit contains an active crosso-
ver. This is the ideal method for di vid ing the
input signal be tween the driver units, allow-
ing the over all response of the system to
be optimized to an extent im pos si ble with a
HT206B,
passive system.
To main tain uniform fre quen cy bal ance in
dif fer ing acoustic en vi ron ments, three switch
groups are included in the active cross over
network: treble and bass 'tilt' and bass 'roll-
off' switches, which make ad just ments in
2 dB steps.
Amplifiers
The amplifi er unit is mounted to the rear of
the speaker enclosure. It includes individual
power amplifi ers for each speaker driver,
120+180 watts on the HT210B, 120+120 W
on the HT208B and 50+80 W on the HT206B
for the treble and bass drivers respectively.
The amplifi ers incorporate protection circuitry
1
/
")
for driver overload protection and amplifi er
2
thermal overload protection. Variable input
sensitivity allows for accurate level match-
3
/
")
ing with the decoder or preamplifi er output
4
section.
The amplifi ers are equipped with an
"autostart" function for automatic switching
between "standby" and "on" power modes.
The power mode can also be changed with
a 12 V trigger voltage or external switch
type remote control. An indicator LED on the
DCW plate shows the system status.
"Autostart" and "remote control" functions
can be enabled or disabled as required by
using the switches on the speaker back
panel.
Installation
Place the loud speakers in their required
positions and aim them towards the center of
the listening area. Do not place the speaker
in a horizontal position as this may cause
acoustical cancellation problems around the
crossover frequency.
Suffi cient cooling for the amplifi er must
be ensured if the speaker is installed in a
restricted space such as a cabinet or inte-
grated into a wall structure. The minimum
clearance for the amplifi er is 10 cm (4") to
any object. The space adjacent to the ampli-
fi er must either be ventilated or suffi ciently
large to dissipate heat so that the ambient
temperature does not rise above 35 degrees
Celsius (95°F).
Before con nect ing up, ensure that the mains
switch is set to "OFF". Check that the mains
voltage selector is set to your local voltage.
Audio input is made via a 10 kOhm bal-
anced (XLR) or unbalanced (RCA) connec-
tor. If the signal source has suitable balanced
outputs, we recommend the use of XLR con-
nectors and balanced interconnect cables
due to their better resistance to interference.
Once connection has been made, the speak-
ers are ready to be pow ered up.
Setting the input sensitivity
The input sensitivity of Genelec HT series
speakers can be matched to the decoder
output section or other source by using the
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