After turning-on the head-unit - keeping the
volume level at zero - both REMOTE ON and
OPERATING LEDs of the amplifier should light-
up green.
If only the REMOTE ON LED is on,
the installation is faulty
and the amplifier has
switched into protection mode.
Turn the head-
unit off immediately
and re-check the previous
connecting steps carefully (wrong or missing
power connections).
SETTINGS & ADJUSTMENTS
Before you begin with the frequency and
Q-factor settings, all tone controls (Bass, Mid,
Treble) and all fader and balance controls on
the head unit have to be set to neutral or
center position! The „Loudness” function
should also be deactivated.
Frequency Settings
F
HP
Subsonic HIGHPASS Frequency Setting
If the amplifier power reserves are rarely used
to their full extent, the subsonic HIGHPASS fre-
quency control F
HP
can basically be set at the
lowest possible level of 11Hz. A subsonic high-
pass F
HP
setting e.g. at 15Hz means that all fre-
quencies below 15Hz (subsonic frequencies)
are cut-out from the amplified frequency spec-
trum. Subsonic frequencies are inaudible but
they draw at lot of amplifier power and cause
unnecessary and excessive speaker cone
movement. Therefore a fixed electronic sub-
sonic filter in the signal path increases the
overall power stability of the subwoofer(s)!
In case the subwoofers will be played at high
volumes regularly or for extended periods of
time,
a higher setting of the subsonic highpass
frequency
control F
HP
between 25 and 35 Hz
will increase the power stability of the sub-
woofer(s) considerably,
especially subwoofers
equipped with drivers of 10" (25 cm) diameter
or less.
In general any subsonic highpass frequency
setting above 20 Hz will notably reduce mecha-
nical and electrical ‘strain’ on the one hand,
while on the other hand simultaneously reducing
the audible parts of the low frequency range.
Subsonic highpass filtering above 40 Hz should
normally not be selected, unless in combina-
tion with small bass drivers and extremely high
playing volume requirements, otherwise the
bass - deprived of all the bottom-end frequen-
cies - will sound rather thin.
F
LP
Basic LOWPASS Frequency Setting
The LOWPASS Frequency control F
LP
must
always be set at a higher frequency than the
subsonic HIGHPASS frequency F
HP
setting
otherwise the XP500.1 cannot operate
correctly, i.e. the power output will be
drastically limited!
PLEASE NOTE: Connecting a lowpass pre-out
signal from the head-unit will cause a down-
ward shift in lowpass (F
LP
) setting of the
amplifier!
This is always the case, even if the
lowpass frequency of the pre-out is set higher
than the highest possible lowpass frequency
(F
LP
) of the XP500.1!
Satellite Amplifier Level Matching
For a start the sensitivity control of the front
satellite amplifier should be set to approxima-
tely 12 o’clock.
Then - if existing - the GAIN/SENSITIVITY con-
trol for the rear satellite amplifier is turned up
until you have reached a good ‘rear fill’ sound.
Such a basic level setting guarantees suffi-
cient headroom for the SUB LEVEL CONTROL
of the XP500.1 subwoofer amplifier.
Depending on the output level of the head-unit
it may be necessary to turn back the
GAIN/SENSITIVITY of the satellite amplifiers
even more for system-appropriate fine-tuning.
This is especially the case, when there is not
enough bass level even with the SUB LEVEL
CONTROL fully turned up.
For details on the actual sensitivity range and
settings of the satellite amplifier(s), please also
consult the respective manual(s).
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