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ENGLISH
SETTING SIGNAL LEVELS
Setting Mixer/Gain Settings in XC-Tune
This adjustment is provided for each channel in order to adjust the processor sensitivity
so that it will produce maximum signal-to-noise radio over a given range of input signal
voltages. Setting this control correctly will ensure that you get maximum performance from
your processor and is critical to ensuring that minimal noise and distortion is produced.
Clarion has included a signal VU meter display to show the signal level at four different
stages of the processor.
Input
- This VU Meter shows the amount of signal present at the RCA connections on the
side of the processor. The XC660DSP will accept up to 8 volts of input when using RCA
connections, and 20 volts of input when using the speaker level input adapters. If the
levels meters are exceeding 0dB threshold, decrease the source level.
Post Mixer
- This VU meter shows the signal level relative to adjustments made in the
XC-Tune Mixer screen. Summing multiple signal sources together can result in overdriving
the DSP processor. If the VU meters exceed the 0dB level, reduce the sensitivity of
the associated processor channel. Ideally, you want the signal as high as possible to
maximize the signal-to-noise ratio of the processor.
Post EQ
- This VU meter shows the signal level relative to adjustments made in the
XC-Tune Parametric Equalizer screens. Boosting the signal will result in an increase in
voltage and may cause the DSP to overload or distort. If necessary, reduce input signal to
the channel in the Mixer Tab to ensure the level does not exceed 0dB.
Output
- This VU meter shows the output of the XC660DSP relative to the master volume
control and the adjustments on the Output tab. The XC660DSP can produce up to 8 volts
on the RCA outputs. This voltage may exceed the input capability of your amplifi ers, so
please ensure you adjust the output level of the processor and the input level of your
amplifi er to produce maximum output.
Note on Amplifi er Sensitivity Settings
Because most applications of the XC660DSP will include equalization, observe
the frequency of the peak amplitude for each channel on the Response Plot on the
XC660DSP software. Use an oscilloscope and a sine wave at this peak frequency to
accurately adjust the sensitivity controls on your amplifi er(s).
