Eclipse ESN E3 High-Power CD Receiver with CDC/E-COM/DSP Control and Wireless Remote Model: 54420 Owner's Manual page 58

How to operate the receiver with an optional DSP/EQ unit connected
[AUDIO CONTROL] button
Fine-tuning EQ functions
1. After pressing the [FUNC] button, hold button [2]
2. Tap button [2] until the desired equalizer mode is
3. Tap the [AUDIO CONTROL] button to switch
4. Turn the [AUDIO CONTROL] button to adjust the level.
5. Hold down a button, [1] to [6], for more than two
6. Push the [FUNC] button.
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down for more than one second.
The EQ adjustment mode starts.
displayed.
frequencies.
The frequencies will switch in the following sequence:
63Hz 125Hz 250Hz 500Hz 1kHz 4kHz 12.5kHz
Right :Increases the value.
Left :Decreases the value.
seconds to preset a value.
The preset value is overwritten by the value set using
the above steps.
This cancels the adjustment mode. The selected value
will now take effect.
Buttons [1] to [6]
[FUNC] button