Mackie M 1400i Specification
OL
–3
–6
–9
–20
–3
–6
–9
–20
SIG
OL
SIG
CH
1
30
28
26
20
22
18
2416
14
8
0
0
1.23v (+4dBu)
SENSITIVITY
GAIN/dB
CH
2
PROTECT
COLD HOT
SHORT
TEMP STATUS
INTERNAL STATUS
CH
1
CH
2
CH
1& 2
ON
OFF
POWER
3v
2v
1v
30
28
26
20
22
18
2416
14
8
0
0
1.23v (+4dBu)
SENSITIVITY
GAIN/dB
3v
2v
1v
PROFESSIONAL POWER AMPLIFIER
FULL SYMMETR Y DUAL DIFFERENTIAL HIGH CURRENT DESIGN
2/25/98
TM
F AST REC O VERY SERIES HIGH CURRENT POWER AMPLIFIER
The world is full of amplifiers that do one thing –
amplify audio signals. But at Mackie Designs, we’ve
always put out the extra effort to provide more quality and more features than our competitors while
maintaining a comparable (or lower) price.
The FR Series™ power amplifiers are designed to
perform reliably under the most adverse conditions,
and we’ve added a bundle of extra features, so you
don’t have to put out the extra bucks to buy a
bunch of add-ons or plug-ins to make your sound
system do what you want it to do.
®
with Architects and
Engineers Specifications
FEATURES
■ Fast Recovery design
for improved tran-
sient response and
recovery from clip-
ping
■ Rack-mountable (2U)
with rear support
rails for extra support
■ Separate left and
right detented gain
controls, calibrated in
both dB and volts
■ Balanced XLR and
1/4" TRS input jacks
■ Balanced XLR thru
jacks
■ Heavy-duty binding
post output jacks in
parallel with 1/4" T S
output jacks
■ 6 LED metering
including Signal
Present and Overload
■ Four levels of protec-
tion circuitry
1) Automatic turn-on
delay to prevent
thumps and pops
from reaching your
speakers
2) Short-circuit
protection with
separate L/R indicating LEDs
3) Thermal protection
with combined CH1
and CH2 Cold and Hot
indicating LEDs
4) SCR Crowbar DC
offset protection
■ Low-cut filter with
variable frequency
control (Off – 170Hz)
■ Infrasonic1 stabiliza-
tion eliminates ultralow-frequency noise
caused by microphone handling,
stage rumble
■ Constant directivity
horn compensation
with variable highfrequency boost
control (2kHz to
6kHz)
■ Amp Mode switch for
Stereo, Mono, or
Bridge modes
■ Limiter to eliminate
clipping in both
channels
1
a.k.a. Subsonic.
MORE INFORMATION
CHECK OUT OUR
WEBSITE
WWW.MACKIE.COM
■
“IN YOUR F A CE”
ALL PRODUCT
BROCHURE
■ Subwoofer mode
switch with dualfrequency select
(63Hz/125Hz)
■ T-Design Constant
Gradient Cooling
T unnel uses two
short tunnels instead
of one long tunnel
for improved cooling
efficiency and output
device reliability
■ Dual-speed cooling
fan
■ Toroidal transformer
for reduced EMI
emissions
CH 1
BALANCED
LINE INPUT
(TRS)
CH 1
BALANCED
LINE INPUT
(XLR-F)
LIMITER
LIMITER
ON
OFF
LOW CUT
FILTER
LOW PASS
FILTER
(SUBWOOFER)
+
–
80 VDC
+
–
90 VDC
TOROIDAL P OWER
TRANSFORMER
LAMP
FUSE
MACKIE DESIGNS
M•1400i
BLOCK DIAGRAM
(#022598DF)
FREQ
CD EQ
FREQ
OUTPUT
APPLICATION
SWITCH
AMP
MODE
SWITCH
63 Hz
125 Hz
FREQ
TO
LIMITER
ON
OFF
LOW CUT
FILTER
FREQ
CD EQ
FREQ
CH 1
GAIN
STEREO
MONO
BRIDGE
CH 2
GAIN
INVERTING
UNITY GAIN
AMPLIFIER
ON
OFF
SUB
ON
OFF
SUB
NC
NC
NC
MUTE
CH 1
PROTECT
LED
CH 1
SHORT
LED
MUTE
CH 2
PROTECT
LED
POWER
AMPLIFIER
FUSE
–80VDC
FUSE
+80VDC
DC OFFSET
DETECT
SHORT
DETECT
METER
DRIVE
POWER
AMPLIFIER
FUSE
–80VDC
FUSE
+80VDC
DC OFFSET
DETECT
TO CH 1
MUTE
OL
–3
–6
–9
–20
SIG
CH 1
SIG
CH 2
SHORT
LED
SHORT
DETECT
METER
DRIVE
TO CH 2
MUTE
TO CH 1
MUTE
TO CH 2
MUTE
OL
–3
–6
–9
–20
SIG
CH 2
SIG
SIG
(TO CH 1
METER DRIVE)
SIG
(TO CH 2
METER DRIVE)
PD's LEASH
HOT
LED
COLD
LED
TEMP
SENSOR
(ON HEATSINK)
FROM CH 1
SHORT DETECT
FROM CH 2
SHORT DETECT
CH 1
MUTE
CONTROL
CH 2
MUTE
CONTROL
4 SEC DELAY
(TURN-ON)
CH 1 AMP OUT
CH 2 AMP OUT
PROGRAM
DETECT
AND
OR
60ºC
DETECTOR
FAN
SPEED
CONTROL
HI DCV
LO DCV
CH 1
MUTE
CH 2
MUTE
POWER
SWITCH
TO CH 1
AND CH 2
MUTE
THERMAL
PROTECT
THRU
(XLR-M)
CH 2
BALANCED
LINE INPUT
(TRS)
CH 2
BALANCED
LINE INPUT
(XLR-F)
THRU
(XLR-M)
80ºC MUTE
55ºC UNMUTE
FAN
TO HUSKY
STADIUM
CH 1
SPEAKER
OUT
CH 2
SPEAKER
OUT
OL
–3
–6
–9
–20
–3
–6
–9
–20
SIGOLSIG
CH
1
30
28
26
20
22
18
2416
14
8
0
0
1.23v (+4dBu)
SENSITIVITY
GAIN/dB
CH
2
PROTECT
COLD HOT
SHORT
TEMP STATUS
INTERNAL STATUS
CH
1
CH
2
CH
1&2
ON
OFF
POWER
3v
2v
1v
30
28
26
20
22
18
2416
14
8
0
0
1.23v (+4dBu)
SENSITIVITY
GAIN/dB
3v
2v
1v
PROFESSIONAL POWER AMPLIFIER
FULL SYMMETRY DUAL DIFFERENTIAL HIGH CURRENT DESIGN
19.00" (48.3cm)
17.25" (43.8cm)
15.25" (38.7cm)
3.50"
(8.9cm)
2U
16.25" (41.3cm)
M•1400i
WEIGHT
36 lbs.
(16.3 kg)
1.25"
(3.2cm)
BLOCK DIAGRAM
DIMENSIONS
M•1400i
DIMENSIONS
®
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