Crown MA-5000i - Back Panel Controls, Connectors and Indicators; Front Panel Controls and Indicators; 2 Setup

Commercial Audio Series Mixer-Amplifiers
Operation Manualpage 6
Commercial Audio Series Mixer-Amplifiers
Operation Manual page 7
2 Setup
Figure 1.1 Front Panel Controls and Indicators
Figure 1.2 Back Panel Controls, Connectors and Indicators
1.2 Front Panel Controls and Indica-
tors
A. Input Signal Presence/Clip Indica-
tors: Green LED, one above each channel's
volume control, illuminates when input
signal exceeds –40 dBu, or flashes brightly
at threshold of audible distortion.
B. Master Output Volume Control: Detented
potentiometer with knob.
1.3 Back Panel Controls, Connectors
and Indicators
A. AC Power Inlet:DetachableIECaccepts
US or Euro style power cords.
B. Amplifier Output Connector: 4-position
terminal barrier block with COM (Common),
8 ohms, 70V and 100V terminals. Accepts
up to 10 AWG terminal forks. Clear non-
touch cover included.
C. Amp Configuration DIP Switch:DIP
switch selection for multiple functions.
1.On:SetsCH1toMicInput.Off:SetsCH1
toLineInput.
2.On:SetsCH1toNormalmode(noprior-
ity).
3. On: CH1 priority contact closure mutes
other channels.
4.On:CH1VOXmutesotherchannelsby
sensingsignalthroughInput1.
5. On: Routes CH1 to MOH output.
6. On: Routes CH2 to MOH output.
7. On: Routes CH3 to MOH output.
8. On: 15V phantom power.
D: Input Connectors 2-4 (160MA) or 2-3
(135MA)
Unbalanced line-level RCA-type connectors,
summed to mono.
E. Preamp Line Out Connector: 3-pin bal-
ancedPhoenix-typeforconnectiontoexter-
nal amplifiers. Level independent of master
volume control.
2 Setup
A
B
C
D
E
F
G
H
C. Output Signal Presence Indicator: Green
LED above master output volume control
illuminates when any input signal exceeds
–40 dBu.
D. Output Signal Clip Indicator: Red LED
above master output volume control flashes
brightly at threshold of audible distortion.
E. Power Indicator: Blue LED indicates
power on.
F. Input Volume Controls: One per input,
detentedpotentiometerswithknobs.Four
controls in 160MA; three controls in 135MA.
G. Tone Controls: Bass and Treble non-
detented recessed potentiometers under
master output volume control. Bass ±10 dB
at 100 Hz, Treble ±10 dB at 10 kHz.
H. Power Switch: Pushbuttonon-offswitch.
F. MOH Level Control: Trim pot adjusts level
for Music-On-Hold output from Telephone
(MOH) Output Connector.
G. Telephone (MOH) Output Connector:
4-terminalPhoenixconnector(2terminals
for 1W output to 8-ohm speaker, 2 terminals
for600-ohmoutputtoPBXmusic-on-hold
port).
H. VOX Threshold: Trim pot controls how
loud the voice on CH1 must be before
muting other channels. Can be set for no
muting.
I. Input Connector 1:5-terminalPhoenix
connector. 3 terminals for balanced signal, 2
terminals for priority contact closure, which
mutesotherchannelswhenDIPswitch3
is on.
A
B
C
D
E
G
H
I
F