Genelec HT205
Operating
Active Home Theater Systems
Manual
1. General description1. General description
1. General description
1. General description1. General description
SystemSystem
System
SystemSystem
The bi-amplified GENELEC HT205 is
a two way active speaker designed for
high quality Home Theater systems.
Designed as an active speaker, this
unit contains drivers, power amplifiers,
active crossover filters and protection
circuitry. The Directivity Control
Waveguide (DCW) technology used
provides excellent frequency balance
even in difficult acoustic environments.
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Figure 1. Suggested tone control settings for differing acoustic environments
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Integrated ConstructionIntegrated Construction
Integrated Construction
Integrated ConstructionIntegrated Construction
As the amplifiers are built into the
speaker enclosure, the only
connections required are the mains
supply and the line level input signal,
making the HT205 very easy to set up
and use. The integrated design allows
the amplifiers and the drivers to be
calibrated as a single unit in the factory.
This eliminates the effects of
component tolerances and ensures
consistent quality. The cast aluminium
cabinet has rounded corners and a
hard-wearing painted outer surface.
DriversDrivers
Drivers
DriversDrivers
The bass frequencies are reproduced
by a 130 mm (5") bass driver mounted
in a 4.5 litre vented cabinet. The -3 dB
point lies at 68 Hz and the frequency
response extends down to 65 Hz
(-6 dB).
The high frequency driver is a 19 mm
3
/4") metal dome. Uniform dispersion
(
control is achieved with the
revolutionary DCW Technology
pioneered by Genelec, which has also
resulted in perfect phase and delay
uniformity at the crossover frequency.
speaker enclosure. The bass and
treble amplifiers both produce 40 W of
output power. The fast, low distortion
amplifiers are capable of driving a
stereo pair to peak output sound
pressure levels in excess of 110 dB at
1 m. The unit incorporates special
circuitry for driver overload protection.
Variable input sensitivity allows for
accurate level matching to the decoder
or preamplifier.
2. Installation2. Installation
2. Installation
2. Installation2. Installation
Place the loudspeakers in their
required positions, taking note of the
line of the listening axis (see figure 2).
Point the speakers to the center of the
listening area. See chapter "Speaker
placement" for further details.
Before connecting, ensure that the
mains switch is off and the volume
control (see figure 2) fully counterclockwise. Check that the mains
voltage selector is correctly set. 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 the connection has been made,
the speakers are ready to be switched
on.
Setting the volume control.Setting the volume control.
Setting the volume control.
Setting the volume control.Setting the volume control.
The input sensitivity of the speakers
can be matched to the output of the
signal source by adjusting the volume
control on the front panel (see figure 2).
Setting the tone controlsSetting the tone controls
Setting the tone controls
Setting the tone controlsSetting the tone controls
The response of the system usually
has to be adjusted to match the
acoustic environment. The adjustment
is done by setting the tone control
switches on the rear panel. The tone
control has four switches, 'treble tilt'
(sw. 1), 'bass roll-off.' (sw. 2) and 'bass
Both drivers are magnetically
shielded.
CrossoverCrossover
Crossover
CrossoverCrossover
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. The active crossover controls
('treble tilt', 'bass tilt' and 'bass rolloff') allow the HT205 to be exactly
matched to any application.
AmplifiersAmplifiers
Amplifiers
AmplifiersAmplifiers
The amplifier unit is built into the
Figure 2: HT205 outer dimensions, with the
reference axis between the bass and the
treble drivers.
Figure 3: Suggested speaker placement
and alignment in a 5.1-channel Surround
system.
tilt' (sw. 3 & 4).
"Treble tilt" attenuates the high
frequency response above 15 kHz by
two decibels. The "bass tilt" switches
provide three alternative attenuation
levels (-2, -4 or -6 dB) for low frequency
response below 150 Hz. "Bass roll-off"
switch changes the bass roll-off
frequency from 65 Hz to 85 Hz (-6 dB).
The factory setting is 'ALL OFF' to give
a flat anechoic response. See Figure
1 for suggested tone control settings
in differing acoustic environments.
Figure 5 shows the effect of the controls
on the anechoic response. Always start
adjustment by setting all switches to
'OFF' position. Then set the switch if
needed to the 'ON' position to select
the response curve needed.
Speaker placement.Speaker placement.
Speaker placement.
Speaker placement.Speaker placement.
exactly similar frequency responses,
which is true in free field conditions.
In a room the frequency responses
change because the sound reflects
from the room’s boundaries. We
recommend that the speakers are
positioned at the same height and
also at the same distance from the
front and side walls. Then the
reflections, and therefore the changes
to the frequency response, are as
similar as possible.
The DCW increases the directivity of
the loudspeaker; more sound is
directed on-axis and less to the sides.
Aim the loudspeakers towards the
center of the listening area to reduce
the effect of the room on the sound.
This is because more direct sound is
heard and reflections from walls which
degrade the sound are minimised.
accommodate a standard microphone
stand.
There is a provision for Omnimount®
size 50 bracket, which can be attached
to two threaded holes at the back of the
loudspeaker with two M6x10 mm
screws. There are also three keyhole
slots for hanging the speaker on the
wall horizontally or vertically on a 4
mm screw with a suitable wide head.
Enclosed is a bag containing four large,
and four small friction pads. It is
suggested that the larger pads are
used on the base of the HT205, and if
mounted horizontally, the smaller pads
should be used on the side. There are
recesses where the pads should be
stuck.
3. Maintenance3. Maintenance
3. Maintenance
3. Maintenance3. Maintenance
It is vital that the loudspeakers are
correctly positioned in the room as this
greatly affects their performance. To
produce a true and accurate
soundstage the speakers must have
Mounting OptionsMounting Options
Mounting Options
Mounting OptionsMounting Options
Figure 4 shows the three possibilities
for mounting the HT205. On the base
of the speaker cabinet is a 3/8" UNC
threaded hole which can
No user serviceable parts are to be
found within the amplifier unit. Any
maintenance or repair of the HT205
unit should only be undertaken by
qualified service personnel.
4. Safety Considerations4. Safety Considerations
4. Safety Considerations
4. Safety Considerations4. Safety Considerations
Servicing and adjustment should only
be performed by qualified service
personnel. The amplifier's rear panel
must not be opened, except by
qualified service personnel.
The speaker should not be placed in
an enclosed position as there will be
insufficient airflow to cool the amplifier.
Do not use this product with an
unearthed mains cable as this may
compromise electrical safety.
To prevent fire or electric shock, do not
expose the unit to water or moisture.
1) Wall hanging points
2) Threaded holes for Omnimount®
size 50 bracket
3) Tone control switches
4) Voltage selector
Figure 4: HT205 rear panel
5) XLR signal input (balanced)
6) RCA signal input (unbalanced)
7) Mains input
8) 3/8" UNC thread at the base
of the speaker
WARNING!WARNING!
WARNING!
WARNING!WARNING!
This equipment is capable of
producing sound pressure levels in
excess of 85 dB, which may cause
permanent hearing damage.
5. Guarantee5. Guarantee
5. Guarantee
5. Guarantee5. Guarantee
This product is guaranteed for a period
of two years against faults in materials
or workmanship. Refer to supplier for
full sales and guarantee terms.
Figure 5: The curve above shows the effect of the 'treble tilt', 'bass tilt' and 'bass rolloff' controls on the free field response.
Figure 6: The curve group shows the horizontal directivity characteristics of HT205 in
its vertical configuration measured at 1m. The lower curve shows the systems power
response.
HT205 SYSTEMHT205 SYSTEM
HT205 SYSTEM
HT205 SYSTEMHT205 SYSTEM
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
Lower cutoff frequency, -3 dB: < 68 Hz
Upper cutoff frequency, -3 dB: > 20 kHz
Free field frequency response of system:70 Hz - 18 kHz
Maximum short term sine wave acoustic output on axis
in half space, averaged from 100 Hz to 3 kHz:
Maximum long term RMS acoustic output in same
conditions with IEC weighted noise (limited by driver unit
protection circuit):
Maximum peak acoustic output per pair on top of
console, @ 1 m from the engineer with music material:
Self generated noise level in free field @ 1m on axis:
Harmonic distortion at 85 dB SPL @ 1m on axis:
Drivers: Bass 130 mm (5") cone
Weight: 5.7 kg (12.5 lb)
Dimensions:
Freq: 75...150 Hz < 3%
Treble 19 mm (3/4") metal dome
Both drivers are magnetically shielded
Height 247 mm (9 3/4")
Width 151 mm ( 5 15/16")
Depth 191 mm (7 1/2")
@ 1 m > 100 dB SPL
@ 0.5 m > 106 dB SPL
@ 1m > 98 dB SPL
@ 0.5 m > 104 dB SPL
> 110 dB
< 10 dB (A-weighted)
> 150 Hz < 1%
(± 2.5 dB)
AMPLIFIERAMPLIFIER
AMPLIFIER
AMPLIFIERAMPLIFIER
SECTIONSECTION
SECTION
SECTIONSECTION
Bass amplifier output power with an 8 Ohm load:
Treble amplifier output power with an 8 Ohm load:
Long term output power is limited by driver unit
protection circuitry.
Amplifier system distortion at
nominal output:
Signal to Noise ratio, referred to full output:
Mains voltage: 100/200 or 115/230 V
Voltage operating range: ±10%
Power consumption:
THD < 0.08%
SMPTE-IM < 0.08%
CCIF-IM < 0.08%
DIM 100 < 0.08%
Bass > 90 dB
Treble > 90 dB
Idle 9 VA
Full output 80 VA
40 W
40 W
CROSSOVERCROSSOVER
CROSSOVER
CROSSOVERCROSSOVER
SECTIONSECTION
SECTION
SECTIONSECTION
Inputs: Input 1: XLR female, balanced 10 kOhm
Volume control: Variable from Mute to -6 dBu for 100 dB
Subsonic filter below 68 Hz :
Ultrasonic filter above 25 kHz:
Crossover frequency, Bass/Treble:
Crossover acoustical slopes:
Treble tilt control operating range:
Bass roll-off control operating in a -6 dB step @ 85 Hz
Bass tilt control operating range in -2 dB steps:
The 'CAL' position is with all tone controls set to 'off' and
the input sensitivity control to maximum (fully clockwise).
Input 2: RCA female, unbalanced 10 kOhm
SPL output @ 1 m
18 dB/octave
12 dB/octave
3.3 kHz
24 - 32 dB/octave
0 to -2 dB @ 15 kHz
0 to -6 dB @ 150 Hz
Genelec Oy, Olvitie 5
FIN - 74100 IISALMI, FINLAND
Phone: + 358-17-83 881
Fax: + 358-17-812267
Email: genelec@genelec.com
Web: www.genelec.com
Genelec Inc., 7 Tech Circle
NATICK, MA 01760, U.S.A.
Phone: +1 508 652 0900
Fax: +1 508 652 0909
Email: genelec.usa@genelec.com
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 Document DRHT205001Genelec Document DRHT205001
Genelec Document DRHT205001
Genelec Document DRHT205001Genelec Document DRHT205001
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 notice
All data subject to change without prior noticeAll data subject to change without prior notice
COPYRIGHT GENELEC OY 1999COPYRIGHT GENELEC OY 1999
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