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6 TROUBLESHOOTING
USER MANUAL
VORTEX 6, 4, 2.6 and 200V
P.26
6.2 Problem: No Sound
Indication: On LEDs not lit
Clip LEDs not lit
Check AC plug.
Confi rm that AC outlet works by plugging in another device.
Indication: On LEDs lit
Signal LED not lit
Make sure the signal source is operating and try another cable.
Check position of Volume Pots.
Indication: On LEDs lit
Signal LEDs responding to signal level
Check the speaker wiring for breaks.
Try another speaker and cable.
Indication: On LED(s) sequence
The amplifi er is in protective muting. Refer to On LED fl ashing sequences table
to fi nd out the cause for the mute.
Overheating will cause protective muting.
If the fans aren’t running the amplifi er requires servicing
6.3 Problem: No Sound or Sound Is Too Low
Indication: On LED not or sporadically lit
Signal LED not lit
Clip LED lit
Under Impedance Limiter is active. The load impedance is abnormally low or
shorted.
Unplug each speaker one-by-one. If the On LED indicates normally when
you disconnect a cable, that cable or speaker is shorted.
Take care not to use too many speakers in parallel, which would result in
an impedance that is too low for normal operation!
Indication: On LED(s) sequence
Please refer to the On LED fl ashing sequences table to fi nd out which protection
is active. High temperature will cause an attenuation of output level! DC will cause
the amp to mute or shut down.
If the On LED sequence indicates “DC, Input Signal Fault”, switch off the
VORTEX and unplug the amp to disconnect it from the signal source. If the
On LED shows the same sequence when the VORTEX is switched on again,
the amp will need to be serviced by a qualifi ed technician.
All other On LED sequences that shut down or mute the VORTEX indicate a
serious internal fault. At this point, turn the VORTEX off, remove AC power
and have the amplifi er serviced by a qualifi ed technician.
6.4 Problem: No Channel Separation
Check the mode indicators on the front panel and make sure the mode
selector on the rear panel is in the Stereo-position.
Make sure other equipment in the signal path such as mixers and
preamps are set for stereo, not mono.
6.5 Problem: Distorted Sound
Indication: On LED lit
Signal LED responding to signal level
Clip LED lit only green
A faulty speaker or a loose connection could cause this. Check the wiring
and the speakers systematically (i.e. step by step) and replace them if
nec essary.
The signal source might be clipping. Keep the VORTEX volume pots at
least halfway up so that the source does not have to be overdriven.
Keep the VORTEX Volume Pots at least halfway up and try changing input
sensitivity from 1,4 V to 32 dB or 26 dB with the Gain Selector on the rear.