Wharfedale Pro DP-4030, User Manual

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Clipping not only makes sound distortion, but also can damage the tweeter of loudspeakers.
You can reduce the input signal to avoid input stage clipping.
Strong sub signals can also damage woofers. A transient low frequency signal caused by dropping a
microphone is a typical sub acoustic signal. For added protection it is recommended to:
a. Install a high pass filter between the mixer and amplifier.
b. Turn on the high pass filter in the mixer. Without affecting the sound set the filter frequency as high as
possible. For example, for a music signal set to 35 Hz, for a microphone set it to 75 Hz.
In order to achieve the best performance and the highest system protection, please take note…
1. Before use, you need to configure the amplifier. Improper wiring will lead to the equipment not working
properly. For information about connection and configuration, please refer to the “installation” section
of this manual.
2. Be car eful when connecting, selecting the input signal and when controlling the output level.
3. Do not connect the ground wire of the input and output cables together. Doing so will form a ground loop
and cause humming and sonic oscillations.
4. Do not connect the output cable to the power supply. It may cause electric shock.
5. Do not modify the electronics.
6. Do not use the amplifier if the SIG LED continuously flashes yello w.
7. Do not overload the input stages. It will send clipped signals to the amplifier and can result in loudspeaker
damage.
8. Do not use the amplifier under the condition of lower than the nominal impedance load. This can cause
amplifier output protection to be activated and risks premature clipping. This can damage the connected
loudspeakers.
9. When the amplifier is turned on, the output sock ets are powered. Risk of electric shock.
SIGNAL
CLIP
PO WER SWIT CH
If the input signal is greater than -32 dB then the LED is green.
If the output signal is distorted by more than 1% then the LED is yellow.
When system protection is activated, the LED turns Red.
When the power supply is working normally, the LED will be green.
These adjust the output amplitude of the amplifier channel.
ON/OFF Control. “I” is ON.
F AUL T
PO WER
V OL UME