4
3. Gain Control:
This knob is used to gain both MIC & Line inputs signals. Please do not operate at high gain
levels as this distorts the signal & leads to audio clipping.
4. EQ Section:
The Diamond Pro-3 series has 3 Band Equalizer with mid-sweep Mono inputs & 3 Band Equalizer
on Stereo channels. The EQ is designed to be easy yet effective to use. It can be used to cut or boost certain
frequencies to achieve a particular tone, or to eliminate any unpleasant characteristics.
• HF Control: The HF control can be used to cut or boost up to +/- 16dB at 12 kHz.
Tip: This frequency band can be used to brighten up high frequencies.
• MF Control: The MF control can be used to cut or boost up to +/- 16dB at 2.5 kHz.
Tip: This frequency band can be used to enhance presence in vocals. Mid frequency variation is from 350Hz
to 6KHz.
• LF Control: The LF control can be used to cut or boost up to +/- 16dB at 60Hz (Mono) & 45Hz (Stereo) Input.
Tip: This frequency band can be used to get a punchy bass response.
5. AUX Section:
The AUX is provided to be used with external effect processors like reverb and delay units,
compressors, gates etc. It can also be used for on stage monitoring or as an input in to a recorder.
* AUX 1 & 2: This knob is used to control the send level to the AUX 1 & 2 out. AUX 1 & 2 are ‘Pre’ fader &
generally used for monitoring. The level of the channel fader will have no effect on the signal level. (Please note
output from external processors connected via the AUX busses will have to be input in to the AUX return section)
* AUX 3 & 4 : These knobs are used to control the send level to the AUX 3 & 4 out. AUX 3/4 are ‘Post’ fader &
generally used for effect processors. The level of the channel fader will affect the signal level.
6. Pan/Bal Control:
This knob can be used to pan/balance the incoming signal between the left and right output
channel.
7. L-R Switch:
This switch is used to route channel signal to Master (L/R) output.
8. G1-G2 Switch:
This switch is used to route channel signal to Group (G1/G2) output.
9. PFL:
This button sends signal from input channel to the headphone as well as bargraph. As signal is pre fader it
is possible to listen to the signal or view on bargraph with fader fully down before it is included in the main (L/R)
mix.
10. Signal/Peak LED:
This LED glows when the incoming audio signal is clipping. Please reduce gain levels to
reduce clipping.
11. Channel Fader:
This fader is used to set the level of the incoming signal to the master/group output. It provides
a visible indication of the channel level. Normal operating position is at “0”; however you have an optional
headroom of up to +10dB.
2. Line Inputs:
The line input will accept line level balanced or unbalanced signal using ¼” stereo (TRS) Jack.
The line input is designed for instruments like Keyboards, Guitars, Drum Machines & other electronic instruments.
Balanced XLR
Pin 1
Pin 2
Pin 3
Ground
Hot (+ve Phase)
Cold (-ve Phase)
Balanced TRS
Tip
Ring
Sleeve
+ve Phase
-ve Phase
Ground
Un-Balanced TRS
Tip
Sleeve
Signal
Ground
