Controls And Settings; Channel Controls - Phonic AM844D Manual Del Usuario

12. Main Insert
Located on the rear of the AM 844D, the primary use for these
TRS phone jacks is for the addition of external devices, such
as dynamic processors or equalizers, to the main L and main R
signals. This will require a Y cord that can send (pre-fader) and
receive signals to and from an external processor.
13. CTRL RM Control Room Outputs
These two 1/4" Phone Jack outputs feed the signal altered by the
Control Room level control on the face of the mixer. This output
has extensive use, as it can be used to feed the signal from the
mixer to an active monitor, for the monitoring of the audio signal
from within a booth, among many other possible uses.
14. Foot Switch Jack
The foot switch port is for the inclusion of a foot switch, used
for remote activation and deactivation of the built-in Digital Effect
processor.
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15. Group Outs
These 1/4" phone jacks output the final feed from the Group 1/5,
2/6, 3/7 and 4/8 Faders on the main panel of the mixer. These
outputs can be sent to the Left or Right Main channels using the
corresponding selector, they can also be used to feed multi-track
records, as well as an amplifier and speakers to be used along
with the Main Speakers. Since the signal of Group 1 is mimicked
to the Group 5 output, Group 2 to Group 6 – and so forth – these
outputs can easily be used to feed an 8 track recorder by simply
connecting the Group outputs to the corresponding Multi-track in-
put channels. Similar to if a Y-cord was built into your AM 844D!
16. AUX Returns
The 1/4" TRS AUX Return inputs are for the return of audio to
the AM 844D mixers, processed by an external signal processor.
If really needed, they can also be used as additional inputs. The
feed from these inputs can be adjusted using the AUX Return
controls on the face of the mixer. When connecting a monaural
device to the AUX Return 1, 2 and 4 inputs, simply plug a 1/4"
phone jack into the left (mono) input, and the signal will appear in
the right as well. You can use balanced and unbalanced signals.
NB. When any device is plugged into the mixer's corresponding EFX Re-
turn inputs (AUX Return 3), the mixer's internal digital effect engine is then
disabled.
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17. Power Connector and Fuse Holder
Used for the addition of a power cable and
supply, allowing power to be supplied to the
mixer. Please use the power cable that is in-
cluded with this mixer only. The Fuse holder,
located above the AC Power connector, is,
of course, for the AM 884D's fuse. If the fuse
happens to blow, open the holder cover, and
replace the fuse with a suitable replacement
(as indicated on the fuse holder's cover).

CONTROLS AND SETTINGS

Rear Panel
18. Power Switch
You can use it to turn the mixer on and off. Ensure you turn all
level controls down before activating.
19. Phantom Power Switch
When this switch is in the on position, it activates +48V of phan-
tom power for all microphone inputs, allowing condenser micro-
phones (well, the ones that don't use batteries) to be used on
these channels. Activating Phantom Power will be accompanied
by an illuminated LED above the left channel Level Meter. Be-
fore turning Phantom Power on, turn all level controls to a mini-
mum to avoid the possibility of a ghastly popping sound from the
speakers.
NB. Phantom Power should be used in conjunction with balanced micro-
phones. When Phantom Power is engaged, single ended (unbalanced)
microphones and instruments should not be used on the Mic inputs.
Phantom Power will not cause damage to most dynamic microphones,
however if unsure, the microphone's user manual should be consulted.
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Channel Controls

20. Line/Mic Gain Control
This controls the sensitivity of the input signal of
the Line/Microphone input of mono channels, the
gain should be adjusted to a level that allows the
maximum use of the audio, while still maintaining
the quality of the feed. This can be accomplished
by adjusting it to a level that will allow the peak
indicator occasionally illuminate. On channels
9-10 and 11-12, the gain control affects the mi-
crophone input only, and on channels 13-14 and
15-16, this only affects line inputs (as there are
no microphone inputs on these channels).
21. Low Cult Filter (75 Hz)
Located on channels 1 through to 8, will activate a high-pass
filter that reduces all frequencies below 75 Hz at 18 dB per Oc-
tave, helping to remove any unwanted ground noise or stage
rumble. Stereo channels does not feature this low cut filter.
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AM844D