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www.mackieindustrial.com
16220 Wood-Red Road NE, Woodinville, WA 98072 USA
TEL 888.337.7404, FAX 425.487.4337, industrial@mackie.com
UK +44.1268.571.212, FAX +44.1268.570.809 +industrial@rcf-uk.com
ITALY +39.0522.354.111, FAX +39.0522.926.208 +industrial@rcf.it
FRANCE +33.3.8546.9160, FAX +33.3.8546.9161 +rcf.commercial@wanadoo.fr
GERMANY +49.2572.96042.0, FAX +49.2572.96042.10 +industrial@mackie.de
Safety First!
Before connecting and using the
equipment, please read this Quick-Start Guide
carefully and keep it for future reference.
WARNING! This equipment has been
designed to be installed by qualified
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
professional sound installer or contractor.
Part No. 910-139-20 Rev. B 10/01
© 2001 Mackie Industrial. All Rights Reserved. Printed in the U.S.A.
CAUTION: To avoid the risk of electric
shock, never allow this equipment to
be exposed to rain or dampness.
AM4000 Series
Integrated Mixer/Amplifier
Quick-Start Guide
The AM4000 Series Integrated Mixer/
Amplifiers are designed for continuous duty in
speech, music, paging, and sound reinforce-
ment applications in churches, schools, offices,
and other venues demanding high performance,
flexible features, and rugged dependability.
Four XLR-type microphone inputs are actively
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
switch on the front panel. Two unbalanced Tape
line-level outputs with a level control and an
unbalanced signal processing loop are also
provided. All are terminated to RCA connectors.
Output modes include 4Ω constant
impedance and 25V, 50V, 70V, and 100V
constant voltage. The smart output stage is fully
protected against permanent damage caused by
overloading, shorts, and extreme temperatures.
The AM4000 Series operates on either 115VAC
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
and 10kHz can be applied to the output signal.
Accessories include a rack mounting kit and
an easily installed chime card.
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).
This GND terminal is the common
connection point for Vdc LED, Vdc 300mA,
and COMMAND PRIORITY.
AC Protection Fuse protects the power
supply and amplifier circuitry. Replace
only with same type fuse.
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.
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 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 OUTPUT LEVEL control adjusts the
TAPE OUT level. Use a small screwdriver to
adjust the control clockwise for more
signal, counterclockwise for less signal.
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.
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
installed between the PRE OUT and MAIN
IN jacks for normal operation.
MAIN IN is an RCA jack that accepts a line-
level signal. See PRE OUT above.
1. Never install, connect, or disconnect
the unit with the power supply on.
2. Before powering up the AM4000 Series
integrated amplifier, make sure the voltage
selector switch on the rear panel
corresponds to the AC voltage applied.
3. Make sure the safety ground on the
power cord is properly grounded.
4. To prevent the risk of electric shock,
never open the unit. There are no
user-serviceable parts inside.
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.
6. If installed in an equipment rack, provide
at least one rack space between each
integrated amplifier.
POWER
AUX
INPUT LEVELS
AUX
1
2
INPUT
3
INPUT
1
INPUT
2
INPUT
4
LOW
EQ
HIGH
VOLUME
PEAK
OVERLOAD
SIGNAL
ON
AM 4160 - P.A. AMPLIFIER
1
3
4
5
6
7
9
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10
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3
4
5
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7
9
0
10
82
1
3
4
5
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7
9
0
10
82
0
10
82
1
3
4
5
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8
4
2
0
2
4
8
-10
+10
66
8
4
2
0
2
4
8
-10
+10
66
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.
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.
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 (–).
The MIC/LINE switch is used to select the
correct sensitivity for either a mic-level or
line-level signal at INPUT 1.
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.
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 (–).
The H.P. switch activates a high-pass filter
on INPUTS 2-4, which attenuates frequen-
cies below 300Hz at 12 dB/octave.
The L.P. switch activates a low-pass filter
on INPUTS 2-4, which attenuates
frequencies above 7kHz at 12 dB/octave.