Table of Contents
Advertisement
levels. The bottom most LED (Green LED) is activated when the pre-fader audio
level reaches –20dB relative to nominal Zero level. The middle LED (Yellow
LED) is activated when the pre-fader signal level reaches –6dB. The top LED
(Red LED) is activated when the pre-fader signal level reaches 0dB. For proper
signal level setting, you should adjust the retractable gain trim pot so that the
Red LED is just lighting on the peaks of signal.
continuously. For example: If you are recording dialog from an interview you
would want to set the gain trim pot so that the Green LED is on whenever the
interviewee is speaking and the Yellow LED is on about half the time. The Red
LED should only light occasionally.
These LED meters are also useful when sending audio out of the individual line
outputs that are located directly above the XLR inputs. These balanced outputs
have a nominal signal level of 0dBV and are wired as pre-fader so they are active
at all times. The above mentioned audio levels are equivalent of what you will
find on the individual line outputs.
I .
BOOM POLE REMOTE CONTROL
The AlphaMix offers the ability to remotely control the audio level of the channel
one input. This feature allows the operator to boom with two hands rather than
holding the boom pole with one and riding levels with the other. To use this
feature you must first set up the mixer as normal (appropriate microphone power
turned on, channel fader turned off for the moment). Strap the boom pole remote
control to your boom pole, and plug the boom remote connector into the "remote"
control connector located on the left side of the mixer directly above the number
one input XLR. Set the slide fader on the remote control to it's mid position and
re-open the channel fader upward (clockwise) until a normal signal level is
indicated on the meters. You are now free to ride gain using the remote control.
Sliding the knob toward the cable end of the remote control lowers the volume,
sliding the knob away from the cable end of the remote raises the volume.
Please note that the use of the remote control overrides the channel gain
trim pot while the remote is in use. Whenever the boom remote is plugged
in, a front panel mounted LED will indicate its use. To remove the boom pole
remote control, you must simply press the release button on the connector and
pull on it.
*Safety Note* You must always turn down the channel fader
before removing the remote control! High audio levels may occur if the
channel fader is in the maximum or near maximum setting when the boom
pole remote control is unplugged. You should note that the boom pole remote
allows an approximate control range of 25 dB. This allows you complete working
control over audio levels from the boom pole.
OUTPUTS:
A.
BALANCED OUTPUTS
The AlphaMix contains very high quality custom-made dual isolated audio output
transformers.
These transformers have been designed to provide wide
bandwidth, low distortion and real-world ease of use.
transformers allow you to feed two cameras without interference. Dual outputs
require twice the transformer size, weight and cost. Other manufacturers have
It should not be lit on
7
These dual output
Advertisement
Table of Contents
