1. General description1. General description
1. General description1. General description
1. General description
SystemSystem
SystemSystem
System
The bi-amplified GENELEC HT205 is
atwowayactivespeakerdesignedfor
high quality Home Theater systems.
Designed as an active speaker, this
unitcontainsdrivers,poweramplifiers,
active crossover filters and protection
circuitry. The Directivity Control
Waveguide (DCW) technology used
provides excellent frequency balance
evenindifficultacousticenvironments.
Integrated ConstructionIntegrated Construction
Integrated ConstructionIntegrated Construction
Integrated 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
anduse. Theintegrateddesignallows
the amplifiers and the drivers to be
calibratedasasingleunitinthefactory.
This eliminates the effects of
component tolerances and ensures
consistentquality. Thecastaluminium
cabinet has rounded corners and a
hard-wearing painted outer surface.
DriversDrivers
DriversDrivers
Drivers
Thebass frequenciesare reproduced
by a 130 mm (5") bass driver mounted
ina4.5litre ventedcabinet. 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
pioneeredbyGenelec,whichhasalso
resulted in perfect phase and delay
uniformity at the crossover frequency.
Both drivers are magnetically
shielded.
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
responseofthesystemtobeoptimized
to an extent impossible with a passive
system. Theactivecrossovercontrols
('treble tilt', 'bass tilt' and 'bass roll-
off') allow the HT205 to be exactly
matched to any application.
AmplifiersAmplifiers
AmplifiersAmplifiers
Amplifiers
The amplifier unit is built into the
Figure 1. Suggested tone control settings for differing acoustic environments
Figure 2: HT205 outer dimensions, with the
reference axis between the bass and the
trebledrivers.
speaker enclosure. The bass and
trebleamplifiersbothproduce40 Wof
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
circuitryfordriveroverloadprotection.
Variable input sensitivity allows for
accuratelevelmatchingtothedecoder
or preamplifier.
2. Installation2. Installation
2. Installation2. Installation
2. Installation
Place the loudspeakers in their
required positions, taking note of the
lineof thelistening 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 counter-
clockwise. Check that the mains
voltageselectoriscorrectlyset. Audio
inputis made viaa10 kOhmbalanced
(XLR)orunbalanced (RCA)connector
(see fig. 4). If the signal source has
suitable balanced outputs, we
recommendtheusetheXLRconnector
andbalancedinterconnectcablesdue
totheirbetterresistancetointerference.
Once the connection has been made,
thespeakers areready to beswitched
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
signalsource byadjusting thevolume
controlonthefrontpanel(seefigure2).
Setting the tone controlsSetting the tone controls
Setting the tone controlsSetting the tone controls
Setting the tone controls
The response of the system usually
has to be adjusted to match the
acousticenvironment. Theadjustment
is done by setting the tone control
switches on the rear panel. The tone
control has four switches, 'treble tilt'
(sw.1),'bassroll-off.'(sw.2) and'bass
Figure3: Suggestedspeaker placement
andalignmentina5.1-channelSurround
system.
noitisoPgnitnuoMrekaepS elberT
)1hctiwS(tliT
ssaB
sehctiwS(tliT
)4&3
ssaB
ffo-lloR
)2hctiwS(
esnopserciohcenatalFffOffOffO
moordepmadanignidnatseerFffOffOffO
moortnarebreveranignidnatseerFffO 3.wS(Bd2-
)FFO4.wS,NO ffO
tenibacanirorenrocanIffO 3.wS(Bd6-
)NO4dna ffO
