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

®

SPECIFICATIONS

CHANNEL

2

1

CHANNEL

CH

1

CH

2

SPEAKER OUTPUTS

+

––

+

63Hz

125Hz

CONSTANT DIRECTIVITY

HORN EQ /AIR EQ

CONSTANT DIRECTIVITY

HORN EQ /AIR EQ

INPUT

THRUTHRU

INPUT

AMP MODE

FREQUENCY

4.5 k Hz

ON

6k Hz

2k Hz

MONO

B

R

I

D

G

E

LIMITER

(CH1 & CH2)

OFF

FULL

RANGE

SUB

WOOFER

LOW CUT

FILTER

LOW CUT

FILTER

OUTPUT APPLICATION

BALANCED

OR

UNBALANCED

BALANCED

OR

UNBALANCED

AIR EQ

ON

/ BRIDGE / MONO

170 Hz

OFF

4.5k Hz

6k Hz

2k Hz

AIR EQ

+

–

170 Hz

100 Hz

OFF

STAGE

MONITOR

100 Hz

STAGE

MONITOR

OFF

TYPICAL

ON

OFF

TYPICAL

TYPICAL

35 Hz

TYPICAL

35 Hz

STEREO

TYPICAL

STEREO

TYPICAL

AIR EQ

AIR EQ

SERIAL NUMBER

MANUFACTURING DATE

RISK OF ELECTRIC SHOCK

DO NOT OPEN

REPLACE WITH THE SAME TYPE FUSE AND RATING.

DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE

UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE.

DEBRANCHER AVANT DE REMPLACER LE FUSIBLE

WARNING:

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT

EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER.

NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

CAUTION

AVIS:

RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR

MONO

BRIDGE

120 VAC 60 Hz

1500 WATTS

CONCEIVED, DESIGNED, AND MANUFACTURED BY MACKIE DESIGNS INC • WOODINVILLE • WA • 98072 • USA • MADE IN USA • FABRIQUE AU USA •

PATENTS PENDING

COPYRIGHT

©

1997 • THE FOLLOWING ARE TRADEMARKS AND/OR REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", FR SERIES, AND THE "RUNNING M

AN" FIGURE

(MONO BRIDGE)

1400 WATTS

4 OHM LOAD MIN.

700 WATTS CH

2 OHM LOAD MIN.

Continuous Average Output
Power, both channels
driven:

250 watts per channel into
8 ohms from 20Hz to 20kHz,
with no more than 0.01 2% THD

425 watts per channel into
4 ohms from 20Hz to 20kHz,
with no more than 0.025% THD

630 watts per channel into
2 ohms from 20Hz to 20kHz,
with no more than 0.050% THD

Bridged mono operation:

850 watts into 8 ohms from
20Hz to 20kHz, with no more
than 0.025% THD

1260 watts into 4 ohms from
20Hz to 20kHz, with no more
than 0.050% THD

Maximum Power at 1% THD
(per IHF-A-202):

300 watts per channel into 8Ω
500 watts per channel into 4Ω
700 watts per channel into 2Ω
1000 watts into 8Ω bridged
1400 watts into 4Ω bridged

Power Bandwidth:

20Hz to 70kHz (+0, –3dB)

Frequency Response:

20Hz to 40kHz (+0, –1dB)
10Hz to 7 0kHz (+0, –3dB)

Distortion:

THD, SMPTE IMD, TIM

< 0.025%@8Ω
< 0.050%@4Ω
< 0.150%@2Ω

Signal to Noise Ratio:

> 107dB below rated
power into 4 ohms

Channel Separation:

> 80dB@1kHz

Damping Factor:

> 350 from 0 to 400Hz

Input Impedance:

20kΩ balanced bridging

Input Sensitivity:

1.23 volts (+4dBu) for

rated power into 4 ohms

Gain:

30.25dB (32.5V/V)

Maximum Input Level:

9.75 volts (+22dBu)

Rise Time:

< 4.4µs

Slew Rate:

Voltage Slew Rate
> 50V/µs

> 100V/µs bridged
Current Slew Rate

> 32A/µs at 2Ω

CMRR:

> 40dB, 20Hz to 20kHz

Transient Recovery:

< 1µs for 20dB overdrive @
1kHz

High Frequency Overload
and Latching:

No latch up at any frequency
or level

Variable Low-Cut Filter:

10Hz (Off) to 170Hz,
2nd Order Bessel

Subwoofer Low-Pass Filter:

Switched: 63Hz/125Hz,
3rd Order Bessel

Constant Directivity High
Frequency Boost:

2kHz to 6kHz (+3dB points)
6dB/octave high-frequency

shelving filter, (shelving occurs
at approximately 30kHz)

Turn On Delay:

3 seconds

Limiter Section:

Channel independent
complementary positive and
negative peak detecting

Indicators:

Six meter LEDs per channel:

SIG (Signal Present),
–20, –9, –6, –3, OL (Overload)

CH 1 & 2

PROTECT LEDs
SHORT LEDs

TEMP STA TUS

COLD, HO T LEDs

Power Consumption:

65 watts at idle 0.9A
550 watts with musical

program fully loaded 6.7A
(4Ω per side, or 8Ω bridged)

900 watts with musical
program fully loaded 10.5A
(2Ω per side, or 4Ω bridged)

850 watts at full power into 8Ω
(cont. sine wave) 9.6A

1500 watts at full power into 4Ω
(cont. sine wave) 15.6A

2500 watts at full power into 2Ω
(cont. sine wave) 24.8A

AC Line Power:

120VAC, 60Hz

AC Drop-out V oltage:

At approximately 50% of
rated line voltage

Physical:

Height: 2U = 3.5" (89mm)
Width: 19.0" (483mm)
Depth: 15.25" (387mm)
Handle Depth:

1.25" (32mm)

Overall Depth:

16.25" (413mm)

Weight: 36 lbs (16.3kg)

Mackie Designs Inc. is engaged in a continuous
pr o gr a m o f p r o d u c t e va l u a t i o n and improvement
and reserves the right to change product
specifications at any time without notice.

The following are trademarks or registered
trademarks of Mackie Designs Inc.: The Mackie
logo, the Running Man, and FR Series.

Part No. 091-154-00 2/98

1998 Mackie Designs Inc. All Rights Reserved.

©
Printed in Woodinville USA.

3

ARCHITECTS AND ENGINEERS SPECIFICATIONS

1. GENERAL. The amplifier
shall have a free-standing
frame with front and rear
brackets for rack-mounting,
and supplied with four
resilient feet suitable for table­top placement. The amplifier
shall be capable of two-channel
operation, with a switch to
place the amplifier into single­channel operation by bridging
the outputs of the two channels.

2. POWER OUTPUT. The
power amplifier, being of two
channels, shall deliver a rated
continuous average sine wave
power output over a 20Hz to
20kHz bandwidth of 250 watts
RMS into 8 ohms per channel,
425 watts into 4 ohms, and
630 watts into 2 ohms with
both channels operating, with
no more than 0.05% total
harmonic distortion. In single­channel operation it shall
deliver 850 watts RMS into
8 ohms and 1260 watts into
4 ohms, with no more than

0.05% total harmonic
distortion.

The power amplifier shall
deliver a maximum continu­ous average sine wave power
output over a 20Hz to 20kHz
bandwidth of 300 watts RMS
into 8 ohms per channel, 500
watts into 4 ohms, and 700
watts into 2 ohms with both
channels operating, with no
more than 1% total harmonic
distortion. In single-channel
operation it shall deliver 1000
watts RMS into 8 ohms and
1400 watts into 4 ohms, with
no more than 1% total
harmonic distortion.

3. POWER SUPPLIES. All
necessary operating voltages
for the amplifier shall be
provided 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 a n electronically
balanced line-level input,
presenting no less than a 20k
ohm impedance to the source.
Each input shall have an input
sensitivity of +4dBu, requiring
no more than 1.23V rms to be
driven to rated output into a
4 ohm load. The input
connector shall appear 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 non­inverting.

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 INDICA­TORS. Each channel shall

have an associated six-segment
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 temperature
status LEDs shall appear on
the front panel, one to
indicate normal operation
(COLD) and one to indicate
thermal protection (HOT).

7. PROTECTION FEATURES.

The amplifier shall provide
delayed activation of the
outputs at turn-on. Each
channel shall have a short­circuit protection circuit for
detecting excessive current
flow at the output that, when
activated, mutes the output
for four seconds. The short­circuit protection shall
continuously cycle on and off
until the shorted condition is
remedied. The amplifier shall
have a thermal protection
circuit to protect the power
devices from over-temperature
operation. The circuit shall
activate when the internal
temperature crosses the safe­operating threshold and,

T oll-Free 800/258-6883 • FAX [phone] • E-mail: [e-mail]

®

when activated, mute the
outputs until the internal
temperature cools to a safe­operating temperature, at
which time the amplifier shall
resume normal operation. The
amplifier shall have a fan to
cool the heat-producing
internal components, drawing
cool air in from the front, and
exhuasting warm air out
through both sides. The fan
shall operate at two speeds,
the speed being determined
by the internal temperature
and the signal level present at
the output. The amplifier shall
have an SCR crowbar circuit to
protect the speakers against a
catastrophic amplifier failure.
The circuit shall activate in the
presence of continuous DC at
the speaker outputs, and shall
shut the amplifier down by
turning off the high-voltage
rails.

8. OUTPUT CONNECTIONS.

Each channel shall have a
heavy-duty 5-way binding
post speaker output connec­tor appearing on the rear
panel, with 3/4" spacing for
accommodating standard
double banana plugs as well
as spade lugs or bare wires.
Each channel shall have a 1/4"
TS phone speaker output jack
appearing on the rear panel in
parallel with the binding post
output.

9. AMP MODES. The
amplifier shall have a three­way switch appearing on the
rear panel for selecting the
mode of operation, which
shall include stereo (two
channels in, two channels
out), mono (one channel in,
two channels out), and bridge
(one channel in, one channel
out, bridged between both
speaker outputs).

10. OUTPUT APPLICATION.

The amplifier shall have a
three-way switch appearing
on the rear panel for selecting
between limiter on, limiter off,
and subwoofer mode. The

defeatable electronic limiter
circuit shall sense the onset of
clipping and shall limit the
input signal and thereby
prevent the output from
clipping. The amplifier shall
have a two-way switch
appearing on the rear panel
for selecting between a 63Hz
and 125Hz low-pass cutoff
frequency when subwoofer
mode is selected.

11. LOW-CUT FILTER. Each
channel shall have a low-cut
filter with a variable frequency
control appearing on the rear
panel covering a range of
10Hz (OFF) to 170Hz.

12. CONST ANT DIRECTIVITY
HORN EQ. Each channel shall

have a two-way switch
appearing on the rear panel
for selecting a constant
directivity horn equalization
circuit. When selected, this
circuit shall provide a 6dB per
octave high frequency boost.
The EQ shall have a variable
frequency control appearing
on the rear panel covering a
range of 2kHz to 6kHz. The
6kHz position shall be called
AIR.

13. PHYSICAL CONFIGURA­TION. The amplifier shall be

rack-mountable with rear
support rails for extra support,
and shall have a steel chassis
frame painted grey-black. The
amplifier shall be 19" wide
(483mm), 3.5" (2U) tall
(89mm), and 15.25" deep
(387mm), and shall weigh 3 6
pounds (16.3kg).

14. DESIGNATION. The
power amplifier shall be a
Mackie Designs M•1400i.

MACKIE DESIGNS INCORPORATED

16220 Wood-Red Rd. NE

Woodinville • WA • 98072 • USA

www.mackie.com

4