Palmer PAN16 Manual De Instrucciones página 6

USER MANUAL
PAD SWITCH
The PAN16 can also be used to feed speaker signals into a mixer. To do this, connect the amplifier output with the
"Input" socket and loop the signal to the speakers via the "LINK" socket. Both cables must be speaker cables with
an appropriate cross-section. As speaker signals have a much higher level than instrument and line signals, the
PAD button must be used to attenuate the volume level. A total of three attenuation levels are available: -10 dB, -20
dB, -30 dB (both PAD switches pressed down). To avoid clipping, the amplifier power should not exceed 100 watts.
CAUTION!
POWER AMPLIFIERS USING TUBE TECHNOLOGY ALWAYS NEED A CORRESPONDING LOAD AT THE OUTPUT. A TUBE
AMPLIFIER SHOULD NEVER BE CONNECTED TO THE PAN16 WITHOUT A SPEAKER. THIS MIGHT RESULT MOST LIKELY IN THE
DESTRUCTION OF BOTH DEVICES.
GND LIFT SWITCH
In conventional microphone cables, the cable shield is connected on both ends of the XLR connector to PIN 1.
This leads to grounding for these devices and as a result may cause the so-called ground loop hum. But since
it is sufficient to connect the ground on one side only for shielding purposes, the "GND LIFT" switch on the PAN16
enables the separation of the PIN 1 from the ground. This prevents ground loops and associated humming noises.
In practical use, by trial and error, choose the position of the switch which causes the least noise.
GROUNDING OF THE HOUSING OF THE PAN 16
For 19" equipment, grounding of the housing is almost exclusively done through the common rack rail. In order to
avoid duplication of this grounding, the housing is not connected internally to the electronic ground. If the PAN16
is not installed in a rack, and operating noise occurs, connect the housing for example, via a screw on the front
panel mounting with a suitable mass.
Please do not place the PAN16 in the vicinity of strong alternating magnetic fields, such as power transformers.
There is a risk of inducing a hum in the audio transformer.
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