HQ Power VPA2200U1 Mode D'emploi page 6

• Make sure no one can trip over the cables. Always fix them with an appropriate tape.
• Both cables should be of the same type and length.
• Do not loop the cables.
• Always install the cables far away from power cables (never alongside them).
• Never put heavy objects like speaker systems, flight cases etc. on cables.
• Always roll cables loosely round the elbow.
g. Connection with the Mains
Have a qualified technician carry out the electric connection!
The wiring of the connection cables is as follows:
The device must be earthed!
9. Operation
After connecting your amplifier to the mains, turn both gain controls in an anticlockwise direction to the minimum
position. The last device to be switched on is the amplifier. The ON and PROTECT LED light up now. If not, check if
the amplifier is properly connected to the mains.
After the activation delay the speakers are activated (PROTECT LED is off).
After setting the volume controls of the pre-amplifier in the minimum position, turn the gain controls of your amplifier
to the midway position. If there is any humming, check the connection cables between the pre-amplifier and your
amplifier (switch off components first). Now adjust the volume with gain controls CH-1 and CH-2.
CAUTION! Never set the level of the individual channels so high that the LIMIT LED remains lit continuously. Make
sure the output signal isn't distorted to avoid damage to your speakers.
All important operating modes of the amplifier can be monitored on the front panel.
SIGNAL
LIMIT
PROTECT
When operating the amplifier system, make sure the sound quality of the loudspeakers is OK. Distortion indicates
that either the amplifier or the loudspeaker is overloaded. Overloads can quickly lead to amplifier or speaker damage.
Reduce the volume immediately to avoid damage. The warranty becomes void when the speaker systems are
damaged by overload.
Always check the sound pressure level with a meter in order not to surpass threshold values.
If you want to switch off the system, switch off the amplifier first and then the pre-amplifiers in order to avoid
transients on the speaker.
VPA2200U1
Cable
Brown
Blue
Yellow / green
output level
short circuit or impedance too low or signal distorted
activated momentarily when switching on or when one of the protective circuits is activated.
PIN International
Live L
Neutral N
Earth
6 VELLEMAN