Mackie Car Amplifier am4000 User Manual

The COMMANDS PRIORITY terminal provides  
access to the priority function for Inputs 1-  
4 over the AUX input by using a external  
normally-open switch to short-circuit the  
COMMANDS PRIORITY terminal to the GND  
(ground) terminal. Enabling the COMMANDS  
PRIORITY function also activates the Vdc  
LED and Vdc 300mA outputs, as well as  
the optional chime board (A1708).  
AUX IN are auxiliary inputs for connecting  
additional stereo line-level audio sources  
such as a cassette deck, CD player, AM/FM  
Tuner, etc. These are unbalanced stereo  
inputs that are combined internally into a  
monophonic signal. Note that only one  
stereo auxiliary input can be used at a  
time, as determined by the AUX switch on  
the front panel.  
AM4000 Series  
Integrated Mixer/Amplifier  
Quick-Start Guide  
AM 4160 - P.A. AMPLIFIER  
OVERLOAD SIGNAL  
PEAK  
ON  
INPUT LEVELS  
AUX  
EQ  
VOLUME  
5
INPUT  
5
1
INPUT  
5
2
INPUT  
5
3
INPUT  
5
4
AUX  
5
LOW  
0
HIGH  
0
POWER  
4
6
This GND terminal is the common  
connection point for Vdc LED, Vdc 300mA,  
and COMMAND PRIORITY.  
The VOICE THR control is used for  
adjusting the sensitivity of the INPUT 1  
PRIORITY function. Use a small screwdriver  
to adjust the control. Turning clockwise  
increases the sensitivity, which means  
that the priority function is triggered with a  
less intense signal.  
4
0
6
4
0
6
4
6
4
0
6
4
0
6
2
2
2
2
1
2
3
1
7
3
1
7
9
3
1
7
9
3
1
7
9
3
1
7
9
3
1
7
9
4
8
4
8
4
8
4
8
2
8
2
8
2
8
2
8
2
8
6
6
6
6
2
8
9
10  
10  
0
10  
10  
10  
-10  
+10  
-10  
+10  
10  
0
AC Protection Fuse protects the power  
supply and amplifier circuitry. Replace  
only with same type fuse.  
The AM4000 Series Integrated Mixer/  
Amplifiers are designed for continuous duty in  
speech, music, paging, and sound reinforce-  
provided. All are terminated to RCA connectors.  
Output modes include 4constant  
impedance and 25V, 50V, 70V, and 100V  
Connect the supplied AC linecord to the  
IEC AC Socket. The AC line fuse is  
contained in the socket, behind the cover  
located at the bottom of the socket.  
Replace only with same type fuse.  
ment applications in churches, schools, offices, constant voltage. The smart output stage is fully  
and other venues demanding high performance, protected against permanent damage caused by  
flexible features, and rugged dependability. overloading, shorts, and extreme temperatures.  
Four XLR-type microphone inputs are actively The AM4000 Series operates on either 115VAC  
INPUT 1 MIC/LINE input is an XLR jack for  
connecting a balanced low impedance  
dynamic microphone (with MIC selected)  
or a balanced line-level signal (with LINE  
selected). This input is in parallel with the  
INPUT 1 IN terminals (16). Pin 1 is ground,  
pin 2 is signal high (+), and pin 3 is signal  
low (–).  
balanced and can be programmed to interrupt  
or attenuate the line-level inputs. Microphone  
inputs 2-4 feature switched 24V phantom  
power and switched high-pass and low-pass  
filters. Microphone input 1 can be switched to  
line level and set to have priority over all  
inputs, which can be activated by either VOX,  
with an adjustable threshold, or a contact  
closure. Activation of either override provides  
18 VDC (300mA) at a barrier connector on the  
rear panel to drive relays, and a separate  
terminal that may be used to drive LEDs. Two  
unbalanced, stereo Aux input connectors are  
internally summed to mono and selected by a  
or 230 VAC, 50/60Hz, as determined by the  
Voltage Selector switch, and supplied by a  
detachable IEC power cord. Insulated terminals to  
connect a backup 24 VDC battery are provided on  
the rear panel. Switchover to DC is automatic.  
The front panel provides level controls for  
each Mic input and the selected Aux input, a  
Master volume control, and Low and High EQ  
controls. The control knobs can be removed for  
security, and their recessed shafts covered with  
the supplied inserts. LEDs indicate power, signal  
present at the output, peak, and output overload.  
12 dB/octave Low and High shelving equaliza-  
tion with up to 12 dB of boost or cut at 100Hz  
The VOLTAGE SELECTOR switch is used to  
select the supply voltage for the amplifier.  
Move switch so the AC line voltage used  
appears on the switch (DOWN for 115V,  
UP for 230V).  
The MIC/LINE switch is used to select the  
correct sensitivity for either a mic-level or  
line-level signal at INPUT 1.  
The CHIME LEVEL control is used to adjust  
the level of the chime signal if the optional  
A1708 Chime board is installed. Use a  
small screwdriver to adjust the control  
clockwise for more signal, counter-  
clockwise for less signal.  
The PHANTOM 24V switch supplies 24 VDC  
to pins 2 and 3 of INPUTS 2, 3, and 4 for  
microphones requiring phantom  
powering. An internal jumper is provided  
to disconnect the phantom power from  
Input 4 if desired.  
The OUTPUT LEVEL control adjusts the  
TAPE OUT level. Use a small screwdriver to  
adjust the control clockwise for more  
signal, counterclockwise for less signal.  
INPUTS 2, 3, and 4 are balanced XLR jacks  
for connecting dynamic or condenser  
microphones. Pin 1 is ground, pin 2 is  
signal high (+), and pin 3 is signal low (–).  
switch on the front panel. Two unbalanced Tape and 10kHz can be applied to the output signal.  
line-level outputs with a level control and an  
unbalanced signal processing loop are also  
Accessories include a rack mounting kit and  
an easily installed chime card.  
The TAPE OUT jacks are RCA-type  
connectors for connecting to the inputs of a  
tape recorder or other recording device.  
The signal at the TAPE OUT jacks is pre- EQ  
and Master VOLUME control.  
Safety First!  
1. Never install, connect, or disconnect  
the unit with the power supply on.  
The H.P. switch activates a high-pass filter  
on INPUTS 2-4, which attenuates frequen-  
cies below 300Hz at 12 dB/octave.  
Before connecting and using the  
equipment, please read this Quick-Start Guide  
carefully and keep it for future reference.  
2. Before powering up the AM4000 Series  
integrated amplifier, make sure the voltage  
selector switch on the rear panel  
The L.P. switch activates a low-pass filter  
on INPUTS 2-4, which attenuates  
frequencies above 7kHz at 12 dB/octave.  
PRE OUT is an RCA jack that provides a  
line-level signal from the preamplifier  
stage. This provides a method for inserting  
an external signal processor into the  
signal chain prior to the amplifier stage, or  
branching off to another amplifier using a  
Y-cord. The signal at the PRE OUT is post-  
EQ and Master VOLUME control. The U-  
shaped jumper wire should remain  
corresponds to the AC voltage applied.  
WARNING! This equipment has been  
designed to be installed by qualified  
3. Make sure the safety ground on the  
power cord is properly grounded.  
professionals only! There are many factors to  
be considered when installing professional  
sound reinforcement systems, including  
mechanical and electrical considerations, as  
well as acoustic coverage and performance.  
Mackie Industrial strongly recommends that  
this equipment be installed only by a  
4. To prevent the risk of electric shock,  
never open the unit. There are no  
user-serviceable parts inside.  
16220 Wood-Red Road NE, Woodinville, WA 98072 USA  
TEL 888.337.7404, FAX 425.487.4337, [email protected]  
UK +44.1268.571.212, FAX +44.1268.570.809 [email protected]  
ITALY +39.0522.354.111, FAX +39.0522.926.208 [email protected]  
FRANCE +33.3.8546.9160, FAX +33.3.8546.9161 [email protected]  
GERMANY +49.2572.96042.0, FAX +49.2572.96042.10 [email protected]  
5. To ensure normal cooling of the  
AM4000 Series, make sure the unit is  
well-ventilated. Avoid exposure to direct  
sunlight or proximity to any heat  
source, dust, or dampness.  
installed between the PRE OUT and MAIN  
IN jacks for normal operation.  
professional sound installer or contractor.  
MAIN IN is an RCA jack that accepts a line-  
level signal. See PRE OUT above.  
CAUTION: To avoid the risk of electric  
shock, never allow this equipment to  
be exposed to rain or dampness.  
Part No. 910-139-20 Rev. B 10/01  
© 2001 Mackie Industrial. All Rights Reserved. Printed in the U.S.A.  
6. If installed in an equipment rack, provide  
at least one rack space between each  
integrated amplifier.  
 

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