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Installation
Input / Outputs
Apart from the headphones, all connections are on the back panel of the amplifier.
Use shielded cables to connect the signal source to the amplifier input. To minimise the
possibility of hum, the shielded cables should run parallel to each other or loosely twisted
together. Locate the cables away from speaker leads and AC power cords.
AC Power
The amplifier AC power cord is plugged into an 115V/120V/230V/240Volt. 50/60 Hz wall
outlet. The right voltage is indicated on the back panel beside to the AC power inlet.
!
Check that your supply voltage is the same as indicated on the amplifier back panel.
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CSA150. Speaker polarity.
The absolute signal phase at the speaker terminals of CSA150 is inverted (exactly 180
degrees, black speaker terminal grounded).
The phase invention is due to the electrical design of the tube line stage in the amplifier.
It is easy to get the signal to the speaker in phase. Just connect the speaker wires opposite to
the colour indication, so that red speaker wire goes to black amplifier connector and black to
red amplifier connector.
You may ask why we did not make the internal wiring of the amplifier so that the colours of
the output connectors are corresponding to the speaker cables. It is because the black
terminal of the amplifier should be recognised as the terminal connected to ground. Wrong
colour indication of the grounded amplifier terminals may cause breakdown of the amplifier
or the measuring equipment if service on the unit is needed.
Using an active subwoofer connected to the CSA150 pre-out terminals. The subwoofer phase
selector should be set in the 180 degrees position as first choice.
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