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everyday use of the SPM 4000
SPM 5000
SPM 12000
turning on your amplifier
1. When you plug your amplifier into the mains the power indicator on the front
panel will glow red which means that the amplifier is in standby mode.
2. Press the power button beneath the power indicator and it will then glow green
indicating that the amplifier is ready for use.
3. There will be a delay of about 12 seconds before you hear the signal. This is to
allow the amplifier to stabilise.
4. The left and right channel indicators light up to show clipping (distortion of the
signal). When the first indicator lights up it means you are just below the onset of
clipping. Full clip is shown by the red indicator lighting up. To prevent clipping
reduce the level of the input source.
automatic shutdown
1. If there is a major overload or short circuit the amplifier will shut down
automatically and the power indicator will fade and switch to red. The amplifier
should be immediately switched off at the mains.
2. When the fault has been rectified the amplifier can be switched on and will power
up as usual. You should wait at least two minutes before turning the amplifier on
again at the mains to allow the power supply protection circuitry to reset itself.
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