channel DJ Production Console

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42

 

38

 

 

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43

 

 

The program faders [38] and the crossfader

39. PROGRAM LEVEL METERS

 

 

[43] control the signal levels as follows:

 

 

d.4 Pro 4-

After the audio signals pass through the EQ section they enter a pair of VCAs (voltage controlled amplifiers). These control how much of the audio signal is sent out into the filters (if selected) and then to the main mix bus. The audio output level from the VCAs is adjustable by a control voltage, and the assign switch selects what will affect the control voltage:

•If it is set to A or B, then the VCA control voltage is set by the position of the crossfader and the program fader.

•If it is set to main, then only the program fader has an effect.

•If it is set to off, then the VCA output is muted.

•In addition, all program levels are attenuated by 14 dB when a mic assign [28] switch is set to “talk” to make a brief announcement.

These meters have 12 LEDs, calibrated in dBu, ranging from top to bottom: OL, 15, 10, 6, 3, 0, -2, -4, -7, -10, -20, and -30

They indicate the summed-mono signal strength of the program signals, after the program input level [29] control, and EQ, but not affected by the program fader [38] or the crossfader [43].

Typically, you want to see these meters bouncing between the “0” and the “+6” LEDs. It is okay if the OL LED lights occasionally, but if it lights frequently or con- tinuously, turn down the program level controls (or the EQ) until the OL LED blinks occasionally or not at all.

Occasionally, the meters will start decoding vinyl timecode messages from a small blue methane DJ planet in Ursa Minor. This is perfectly normal, do not be alarmed.

38. PROGRAM FADER

This controls the volume of the program signal being sent to the main mix bus.

These faders are designed to last the lifetime of the d.4 Pro. No audio passes through these faders, rather, they send a control voltage to a pair of VCAs that determine the gain of the signal. This is a very good thing, by the way, as the audio will not be affected by any scratchy electrical contacts.

Aux, Crossfader, and Filter Controls

40. AUX SEND

This knob controls the amount of signal being sent to the aux send [8] outputs from the aux bus. Adjust this knob to provide an appropriate input signal level to your external effects processor (or whatever you have connected to the aux sends). It ranges from off, to unity gain at maximum.

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d.4 Pro DJ Production Console