microphone on, turn on the transmitter and start counting out loud while moving the
Mic
Trim(14)
control on the back until feedback (mic howling) starts. Edge it back a touch until the
voice sounds dry with no hint of “ringing” or feedback. If you need more gain then advance the
receiver
ʼ
s volume control until it
ʼ
s loud enough. Fine tune by walking around the room talking
and seeing how close you can get to the speakers without the mic feeding back - the better
they are the closer you'll get. This process is called setting the “maximum gain-before-
feedback” position. Set the
MIC FILTER (15)
to ON if you
ʼ
re using large speaker boxers or a
system with sub-woofers. Leave off if using smaller speakers - always compare on v off.
Please note - if you do need to EQ the Voice Channel or process it through a DSP device then
use the
MIC INSERT (13)
socket on the rear. You
ʼ
ll need an adaptor cable of a 6.35mm TRS
plug to 2 x 6.35mm L & R in-line plugs or sockets - one will take the voice from the mixer and
the other will feed it back into the input after processing.
6.3 It
ʼ
s a Voice-Over-Music Mixer!
Now play some music and adjust the music volume against the mic level while projecting
your voice as you would if teaching a Group Fitness or Dance Class. Remember, it's a Voice
over Music Sound System - the audience wants to hear what's being said above the level of
the music. At the end of the class the instructor can return the Volume Control to the start level
to keep the vibe going when doing the cool down and for background music at any time.
6.4 Using the PUNCH button (4)
The punch button is a pre-set bass & treble booster circuit to give your MP3 files a bit more
sonic punch. It sounds best when your player
ʼ
s eq is set to flat. Warning: Do not use when the
volume is turned up really high as this could result in damage to some amps and/or speakers.
6.5 Setting the Tone Controls.
If using a CD Player, start by playing a test music track. Set the
Music 1 Volume (2)
to a
medium level and adjust the
Bass And Treble Controls (3)
by sweeping each one from left to
right and back again. Decide on a setting that gives a more subtle fullness to the music rather
than an exaggerated bass and/or treble. Note that these are removable knobs and can be
replaced by the two black blanking rubber plugs suppled for a “set and forget” arrangement if
required by management.
7. USB Power Sockets
Two USB Charging Ports are provided on the AMX-123, use the
Rear Panel USB (10)
to
connect a fixed floating charging cable like the ones supplied with an Apple 30 pin dock
connector and use the
Front Panel USB (7)
for charging all other types of Smartphones and
MP3 Players. Please note these are only charging sockets and cannot be used to play back
music from any MP3 player or USB Drive.
8. Music Mute Relay Circuit
Many responsible Building Approval Authorities around the world require a cut-out switch
on any powerful music system installed in a private, public or community centre (ie city or
council owned fitness centres). The circuit is closed by the fire alarm control system if an alarm
is activated anywhere in the building. This is good practice and we expect that this will
eventually be a compliance standard for all installations everywhere.
We have opted to use a music cut-out circuit rather than a total power cut system, as we feel
that the mic user should be trained to respond to the fire alarm and lead their people out to
