QM
600ASi
User Manual
User Manual
Q Motion Series
QM600ASi
6
Do not run the system with the mixer and\or
speaker showing peak lighting (usually red
lights on or flashing) while the box is turned
down.
Once there are red clip lights on in the signal
chain, the system is operating beyond full
power. Increasing volume at either the input
or output side of the system will only risk
causing damage.
The QM600ASi has an input limiter to help
protect the system however even these
protection mechanisms can be driven too
hard. Like any speaker system, if they are
driven into continuous distortion, there is real
risk of damaging the system.
tuning the BaSS CroSSover
Tuning the crossover high/low pass filter
will give you more control over the resulting
sound. The high pass filter should be set
between 80-125Hz for best results. At
90-100Hz the system will sound like a
“classic sub”. Setting the low pass above
this frequency range will deliver a mid-bass
sound. This may be suitable for certain
pre-recorded music but is not generally used
for live music.
The standard setting for live sound is 100Hz.
Setting the high PaSS
CroSS-over
The high pass switches are for connecting a
powered satellite speaker. These can be set
to full range/80Hz and 125Hz. In cases where
a 10”powered boxes are being connected
to the cross-over output, the 125Hz setting
is recommended. If connecting 12” or 15”
powered boxes, the 80Hz setting should be
used. In some cases with 15” speakers, the
full range (through) setting will allow more
bass from the satellite speakers. When
running the satellite speakers in full range,
check that they are in phase with the sub
bass.
CheCking the SyStem PhaSe
(Polarity)
A simple method of checking the polarity
of your powered satellite speakers can be
carried out as follows:
1. Turn down both the QM600ASi and the
satellite speaker.
2. Place a satellite speaker next to the
QM600ASi and connect it to the signal
output on the sub.
3. Run some music into the sub input and
turn up the volume.
4. Turn up the satellite speaker. If the bass
is louder, the system is in phase. If the
bass drops in level or sounds unusual,
push the phase reversal button on the
sub amplifier and listen again. If the
bass level increases, the system is now
in phase.
Once the phase relationship between the sub
and satellite boxes has been established, set
the rest of the speakers in the system to the
same volume.
