MACKIE FRSERIES M1400 - Manual

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1/16/97
FAST RECOVERY SERIES HIGH CURRENT POWER AMPLIFIERS
TM
1. GENERAL. The amplifier
shall have a free-standing
frame with front and rear
brackets for rack-mounting,
and supplied with four resil-
ient feet suitable for table-
top placement. The amplifier
shall be capable of two-
channel operation, with a
switch to place the amplifier
into single-channel operation
by bridging the outputs of
the two channels.
2. POWER OUTPUT.
M•1200: The power ampli-
fier, being of two channels,
shall deliver 225 watts RMS
into 8 ohms per channel,
400 watts into 4 ohms, and
600 watts into 2 ohms with
both channels operating. In
bridge-mode of operation it
shall deliver 800 watts RMS
into 8 ohms and 1200 watts
into 4 ohms.
M•1400: The power ampli-
fier, being of two channels,
shall deliver 250 watts RMS
into 8 ohms per channel,
425 watts into 4 ohms, and
630 watts into 2 ohms with
both channels operating. In
bridge-mode of operation it
shall deliver 850 watts RMS into 8 ohms and 1260 watts
into 4 ohms.
3. POWER SUPPLIES. All
necessary operating voltages
for the amplifier shall be pro-
vided by an internal power
supply. A master power switch
shall be located on the front
panel along with a green
power-indicating light.
4. INPUT CHANNEL
CONNECTIONS. Each
monaural input channel
shall have an electronically
balanced line-level input,
accommodating a nominal
line level between –10dBV
and +4dBu, and appearing
on the rear panel as a female
XLR-3 type connector. In
addition, each monaural
input channel shall have a
parallel 1/4" TRS phone
jack and a male XLR-3 type
connector, which can be
used as inputs or “thru”
jacks for daisy-chaining the
input signal to another
amplifier. Pin 2 of the XLR
connectors, and the tip of
the 1/4" TRS phone jack,
shall be non-inverting.
5. INPUT CHANNEL LEVEL
CONTROLS. Each monaural
input channel shall be
equipped with a gain control
appearing on the front panel,
each having 40 detent
positions, and calibrated in
dB and volts.
6. FRONT PANEL INDICA-
TORS. Each channel shall
have an associated six-seg-
ment LED meter appearing
on the front panel, capable
of displaying signal present,
–20dB, –9dB, –6dB, –3dB,
and overload. Each channel
shall have internal status
LEDs appearing on the front
panel to indicate activation
of protect mode and short-
circuit protection. Two tem-