DAPAudio Oxygen Manuel du propriétaire - Page 9

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Installation

Remove all packing materials from the Oxygen. Check that all foam and plastic padding is removed.

Connect all cables.

Always disconnect from electric mains power supply before cleaning or servicing.

Damages caused by non-observance are not subject to warranty.

1. Line 1 /Line 2 + Peak LED

You can switch between Line 1 or Line 2

2. Mic 1

3. GAIN

Mic Channel input level is determined by the Gain control.

With the Gain control you can adjust the MIC or LINE input-sensitivity, while optimally

matching the incoming signals to the mixer's internal operation level. When dealing

with very low input levels (example vocal recordings or distant sound sources) the

high gain is extremely profitable.

How to set the Input level:

1) Set the gain control and the corresponding channel fader to their minimum setting.

2) Connect the desired sound source (CD player, microphone, ect) to the

corresponding MIC or LINE input.

3) Play the sound source at its highest volume setting; respectively, sing or speak as

loud as possible directly into the microphone.

4) While doing so, adjust the input level using the gain control, so that during the

loudest passages the PEAK LED is just not lit, but the SIGNAL-LED lights

constantly.

This basic channel setting leaves you at least 8dB headroom. This means, you have

at least 8dB before signal clipping. If you want to make further adjustments to the

channel's EQ setting, you should repeat step 3 and 4 again.

4 / 5 / 6. Equalizer SECTION (HI / MID / LOW)

The mixer's Equalizer section allows shaping of the incoming audio signal. All mono

input channels are fitted with 3-band EQ. The upper (6) and lower (9) shelving

controls have their frequencies fixed at 12 Khz and 80 Hz respectively. The Mid range

control (8) has a peaking response frequency at 1.2 Khz. 2 bands have up to 15, and

Low has up to 18 dB cut and boost, with a centre detent for "OFF". Turning the

Equalizer level control to the right amplifies the frequency range, turning to the left

attenuates the signal. Minor changes to the Equalizer control usually produce the best

results. Try to avoid excessive enhancement of the MID band.

7. Balance

Change the balance from Left to Right.

Note: The Balance does not function when you are in Mono Mode

8. PFL

The PFL button (pre fade listening) is designed to override the main signal, so

although an individual channel is heard, it is not in complete isolation. If you push the

PFL button, regardless of the Aux rotary control, you will get the complete signal in

your headphone/monitors. This is useful, because the recording engineer hears some

of the main signal. So the channel is not only heard, but also in context. Pressing this

button assigns a channel's audio signal to the PFL bus. Simultaneously assigning

more than one channel to the PFL bus is possible, while the individual channel's