5. Prevent electrical damage
The amplifier is internally protected against:
mains surge
over-current on the output
excessive heating
DC connect
of the input signal
Any of these events may cause the amplifier to halt for a short period, limit the signal
output, or blow the internal melt fuse. A red warning led will also light up in most of
those cases to inform the user.
Still damage can occur if:
the amplifier is exposed to excessive input signals on the external signal socket
excessive mains voltages on the mains socket
load impedance lower than 2 Ohm on the output speakon socket
capacitive or inductive loads on the output speakon socket
adverse contact of mains power leads to the housing
Connecting a 115V amplifier to 230V will fatally damage the amplifier.
Connecting a 230V amplifier to 115V mains will not work.
This Qam amplifier has fixed mains settings and will not adapt outside a +- 10% range.
6. Prevent mechanical damage
Always follow the shipment instructions below for any carrier of flight shipment.
And do not expose the amplifier to:
excessive dust
shocks in excess of 25 G or a 10 cm drop or equivalent.
temperatures above 50 degrees Celsius or below -20 degrees Celsius.
This is electronic measurement equipment that requires care in handling and shipping.
7. Safety instruction
Do not expose the amplifier to water, other fluids, combustible gases. (If the
outside of the case becomes dirty or stained, carefully wipe the surface with a
dry cloth only.)
Do not place objects against or on top of the amplifier.
Allow free flow of air around the amplifier.
Only use a triple line, earthed, mains cable with a standard IEC socket and with a
cable suitable for 10 Ampere or more, and only the specified type of fuses.
Wear ear protection when the amplifier is connected to a source or loudspeaker.
8. Technical specification
Specifications*:
Frequency range with an external signal:
20-20000 Hz
Frequency range white and pink noise:
50-20000 Hz third octave bands
Amplification setting accuracy:
+- 0.5 dB
Maximum voltage output:
150 Volt pk-pk
Maximum current output:
20 Ampere RMS
Maximum continuous power output:
up to 1000 Watt RMS**
Minimum load impedance:
2 Ohm
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