Mackie FR Series M.800 User manual

OF 8 PAGES
M•800 High-Current Power Amplier
AMPLIFIER
M•800
M•800 High-Current Power Amplier
OF 8 PAGES
AMPLIFIER
M•800
www.mackie.com
16220 Wood-Red Road NE, Woodinville, WA 98072 USA
800.898.3211, fax [phone], [e-mail]
UK +44.1268.570.808, fax [phone], [e-mail]
M•800
High-Current Power Amplier
1OF 8 PAGES
AMPLIFIER
M•800
OF 8 PAGES
M•800 High-Current Power Amplier
AMPLIFIER
M•800
Features
 800 watts max, 560 watts continuous @ 4 ohms bridged
 Ultra-low-noise/low-distortion design
 Fast Recovery circuitry reduces distortion at clipping
 Two 2nd order, 12 dB/octave, Bessel low-cut lters with
variable frequency from Off to 170Hz
 Constant directivity horn EQ/Air EQ with variable frequency
from 2kHz to 6kHz and on/off switch
 Limiter with on/off switch
 Balanced/unbalanced 1/4" and XLR inputs
 XLR thru outputs
 1/4" jacks (Speakon® connectors on international version)
and 5-way binding post outputs (both models)
 Detented gain controls calibrated in dB and volts
 Signal present and OL LEDs
 Channel Status LEDs
 Superior T-Design cooling
 Five-year, limited warranty (U.S. only)
Applications
 Live sound/music reinforcement for churches,
clubs, schools, conference centers, hotels
 High level A/V playback
 Large speech systems
(continued on page 8)
M•1400/M•1400i Power Ampliers, 1202-VLZ PRO
12-Channel Mic/Line Mixer, 1402-VLZ PRO 14-Channel
Mic/Line Mixer, 1604 VLZ PRO 16-Channel Mic/Line Mixer,
1642-VLZ PRO 16-Channel Mic/Line Mixer, SR24•4-
VLZ PRO 24 Channel Mic/Line Mixer, SR32•4-VLZ PRO
32 Channel Mic/Line Mixer, CFX Series 12, 16, and 20
Channel Mic/Line Mixer w/Digital Effects, C300z 2-Way
Loudspeaker, C200 2-Way Loudspeaker, SWA1501 and
SWA1801 Active Subwoofers.
RELATED PRODUCTS
M•800
 The Mackie M•800 is a dual channel, high output
power amplier that incorporates a number of unique
features including FR “Fast Recovery” design, high con-
tinuous current output, and a T-Design constant- gradient
cooling tunnel for improved cooling efciency and out-
put device reliability.
 The M•800 is rated at a continuous output of 150
watts per channel into 8Ω, 225 watts per channel into
4Ω and 280 watts into 2Ω. In bridge mode the M•800
is rated at 450 watts into 8Ω and 560 watts into 4Ω.
Variable low-cut lters on each channel, with a range
from Off to 170Hz, enable tighter bass response and
a Constant Directivity Horn EQ improves high-frequency
reproduction. The CD Horn EQ is 6 dB/octave and
its “knee” position is sweepable from 2kHz to 6kHz.
The built-in limiter helps eliminate clipping. Inputs are
balanced/unbalanced 1/4" and XLR, and XLR thru con-
nections allow the full-range signal to be routed to
another M•800. Speaker connections on the M•800
are 1/4" and binding posts for the U.S. version, and
Speakon® and binding posts for the international ver-
sion. An amp mode switch selects stereo, mono, or
bridge operation.
 To effectively deal with clipping, an amplier must be
able to recover almost instantaneously. That is the de-
nition of “Fast Recovery.” Rather than using negative
feedback to help control clipping distortion, the M•800
employs a very sparse amount of negative feedback.
The use of Baker Clamp circuits on the positive and
negative voltage amp stages prevents saturation (and
latching) during periods of overdrive. In addition, a tran-
sistor senses when the Baker Clamp is active and acti-

OF 8 PAGES
M•800 High-Current Power Amplier
AMPLIFIER
M•800
M•800 High-Current Power Amplier
OF 8 PAGES
AMPLIFIER
M•800
www.mackie.com
16220 Wood-Red Road NE, Woodinville, WA 98072 USA
800.898.3211, fax [phone], [e-mail]
UK +44.1268.570.808, fax [phone], [e-mail]
M•800
High-Current Power Amplier
1OF 8 PAGES
AMPLIFIER
M•800
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M•800 High-Current Power Amplier
AMPLIFIER
M•800
2
M•800 Specications
Maximum Power, mid band (@ 1kHz with 1% THD):
175 watts per channel into 8 ohms
275 watts per channel into 4 ohms
400 watts per channel into 2 ohms
550 watts into 8 ohms bridged
800 watts into 4 ohms bridged
Continuous Sine Wave Average Output Power, both
channels driven (FTC power rating 40Hz - 20kHz):
150 watts per channel into 8 ohms from 40Hz to
20kHz, with no more than 0.025% THD
225 watts per channel into 4 ohms from 40Hz to
20kHz, with no more than 0.05% THD
280 watts per channel into 2 ohms from 40Hz to
20kHz, with no more than 0.1% THD
Bridged mono operation:
450 watts into 8 ohms from 40Hz to 20kHz, with no more than
0.05% THD
560 watts into 4 ohms from 40Hz to 20kHz, with no more than
0.1% THD
Power Bandwidth:
20Hz to 70kHz (+0, –3 dB)
Frequency Response (1 watt, 8 ohm load):
20Hz to 40kHz (+0, –1 dB)
10Hz to 70kHz (+0, –3 dB)
Distortion:
THD, SMPTE IMD, TIM (250mW to rated power)
<0.025% @ 8 Ω
<0.05% @ 4 Ω
<0.15% @ 2 Ω
Signal-to-Noise Ratio:
>104 dB below rated power into 4 ohms
Channel Separation:
>70 dB @ 1kHz
Damping Factor:
>250 @ 400Hz
Input Impedance:
20kΩ balanced bridging
Input Sensitivity:
1.23 volts (+4 dBu) for rated power into 4 ohms
Voltage Gain:
28.0 dB
Maximum Input Level:
9.75 volts (+22 dBu)
Rise Time:
<5µs
Slew Rate:
Voltage Slew Rate >40V/µs
>80V/µs bridged
Current Slew Rate >20A/µs at 2 ohms
CMRR:
>40 dB, 20Hz to 20kHz
Load Angle:
8(±jx) time independent at 8Ω
4(±jx) time dependent, T >6 min. at 4Ω
2(1±jx) time dependent, T >2 min. at 2Ω
Transient Recovery:
<1µs for 20 dB overdrive @ 1kHz
High-Frequency Overload and Latching:
No latch up at any frequency or level
High-Frequency Stability:
Unconditionally stable driving any reactive or capacitive load
Turn On Delay:
3-4 seconds
Variable Low-Cut Filter:
10Hz (Off) to 170Hz, 2nd Order Bessel
Constant Directivity High-Frequency Boost:
2kHz to 6kHz (+3 dB points)
6 dB/octave high-frequency shelving lter,
(shelving occurs at approximately 30kHz)
Limiter Section:
Complementary Positive and Negative Peak Detecting
Indicators:
5 meter LEDs per channel
–20, –9, –6, –3, OL (Overload)
TEMP STATUS
NORMAL/HOT LEDs
Power Consumption:
55 watts at idle
400 watts with musical program fully loaded
(4 ohms per side, or 8 ohms bridged)
600 watts with musical program fully loaded
(2 ohms per side, or 4 ohms bridged)
550 watts at rated power into 8 ohms
(continuous sine wave)
950 watts at rated power into 4 ohms
(continuous sine wave)
1500 watts at rated power into 2 ohms
(continuous sine wave)
(continued on page 3)

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M•800 High-Current Power Amplier M•800 High-Current Power Amplifer
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3
AC Line Power:
US 120 VAC, 60Hz
Europe 240 VAC, 50/60Hz
Japan 100 VAC, 50/60Hz
Korea 220 VAC, 60Hz
AC Drop-out Voltage:
At approximately 65% of rated line voltage
Physical:
Height 3.50" (89 mm)
Width 19.00" (483 mm)
Depth 15.25" (387 mm)
Overall Depth 16.25" (413 mm)
Weight 28 lbs (12.7 kg)
19.00" (48.3cm)
17.25" (43.8cm)
15.25" (38.7cm)
3.50"
(8.9cm)
2U
16.25" (41.3cm)

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CH 1
BALANCED
LINE INPUT
(TRS)
CH 1
BALANCED
LINE INPUT
(XLR-F)
LIMITER LIMITER
ON
OFF
ON
OFF
LIMITER
SWITCH
LIMITER DETECTION
LIMITER DETECTION
ON
OFF
LOW CUT
FILTER
+
–
60 VDC
+
–70 VDC
TOROIDAL POWER
TRANSFORMER
LAMP
FUSE
MACKIE DESIGNS M•800 BLOCK DIAGRAM 26 FEB 1999
FREQ
CD EQ
FREQ
ON
OFF
LOW CUT
FILTER
FREQ
CD EQ
FREQ
CH 1
GAIN
STEREO
MONO
BRIDGE
STEREO
MONO
BRIDGE
STEREO
MONO
BRIDGE
CH 2
GAIN
INVERTING
UNITY GAIN
AMPLIFIER
POWER
AMPLIFIER
DC OFFSET
DETECT
METER
DRIVE
POWER
AMPLIFIER
–60VDC
+60VDC
–60VDC
+60VDC
DC OFFSET
DETECT
MUTE
OL
–3
–6
–9
–20
METER
DRIVE
MUTE
MUTE
OL
–3
–6
–9
–20
HOT
LED
NORM
LED
TEMP
SENSOR
(ON HEA
TSINK)
MUTE
CONTROL
4 SEC DELA
Y
(TURN-ON)
CH 1 AMP OUT
CH 2 AMP OUT
PROGRAM
DETECT
AND
OR
60ºC
DETECTOR
FAN
SPEED
CONTROL
HI DCV
LO DCV
MUTE
POWER
SWITCH
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
CH 1
SPEAKER
OUT
CH 2
SPEAKER
OUT
M•800
Block Diagram

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5
U.S. and International Version Front Panel
U.S. Version Rear Panel
International Version Rear Panel
CH
1
1CHANNEL
CH
2
SPEAKER OUTPUTS
+
––
+
MONO
BRIDGE
BAL/UNBAL
MONO
BRIDGE
OFF ON OFF ON OFF ON
CONSTANT DIRECTIVITY
HORN EQ /AIR EQ
LOW CUT
FILTER
170 Hz
OFF
4.5k Hz
6k Hz
2k Hz
AIR EQ
100 Hz
STAGE
MONITOR
TYPICAL
35 Hz
TYPICAL
TYPICAL TYPICAL
TYPICAL
STEREO
THRU
LOW CUT
FILTER
INPUT
INPUT
THRU
170 Hz
OFF
4.5k Hz
6k Hz
2k Hz
AIR EQ
TYPICAL
35 Hz
CONSTANT DIRECTIVITY
HORN EQ /AIR EQ
BAL/UNBAL
AMP MODE LIMITER
100 Hz
STAGE
MONITOR
120 VAC 60 Hz
900 WATTS
(MONO BRIDGE)
800 WATTS
4 OHM LOAD
(STEREO)
400 WATTS / CH
2 OHM LOAD
OUTPUT SUITABLE FOR CLASS 2 WIRING
CHANNEL 2
LISTED COMMERCIAL
AUDIO EQUIPMENT
9Z39
R
SERIAL NUMBER MANUFACTURING DATE
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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
THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE
CONCEIVED AND DESIGNED BY MACKIE DESIGNS INC • WOODINVILLE
WA • 98072 • USA • MADE IN CHINA • PATENTS PENDING • COPYRIGHT ©1999
ON
OFF
POWER
PROFESSIONAL POWER AMPLIFIER
FULL SYMMETRY DUAL DIFFERENTIAL HIGH CURRENT DESIGN
OL
–
3
–
6
–
9
–
20
–
3
–
6
–
9
–
20
OL
CH
1
28
26
24
18 20
16
2214
12
6
0 0
1.23v (+4dBu)
SENSITIVITY
GAIN/dB
1.23v (+4dBu)
SENSITIVITY
GAIN/dB CH
2
NORM HOT
SIG
CH STATUS
1&2
3v
2v
1v
28
26
24
18 20
16
2214
12
6
0
0
3v
2v
1v
+
––
+
CH
11CHANNEL
CH
2
SPEAKER OUTPUTS
MONO
BRIDGE
BAL/UNBAL
MONO
BRIDGE
OFF ON OFF ON OFF ON
CONSTANT DIRECTIVITY
HORN EQ /AIR EQ
LOW CUT
FILTER
170 Hz
OFF
4.5k Hz
6k Hz
2k Hz
AIR EQ
100 Hz
STAGE
MONITOR
TYPICAL
35 Hz
TYPICAL TYPICAL
TYPICAL
TYPICAL
STEREO
THRU
LOW CUT
FILTER
INPUT
INPUT
THRU
170 Hz
OFF
4.5k Hz
6k Hz
2k Hz
AIR EQ
TYPICAL
35 Hz
CONSTANT DIRECTIVITY
HORN EQ /AIR EQ
BAL/UNBAL
AMP MODE LIMITER
100 Hz
STAGE
MONITOR
240 VAC 50-60 Hz
900 WATTS
(MONO BRIDGE)
800 WATTS
4 OHM LOAD
(STEREO)
400 WATTS / CH
2 OHM LOAD
OUTPUT SUITABLE FOR CLASS 2 WIRING
CHANNEL
2
SERIAL NUMBER MANUFACTURING DATE
CONCEIVED, DESIGNED, AND MANUFACTURED BY MACKIE DESIGNS INC
WOODINVILLE WA • 98072 • USA • MADE IN USA • FABRIQUE AU USA •
THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF
MACKIE DESIGN INC.: "MACKIE", "FR SERIES", & THE "RUNNING MAN" FIGURE

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6
(continued on page 7)
Architects’ and Engineers’ Specications
1. GENERAL. The amplier shall have a free-standing
frame with front and rear brackets for rack-mounting,
and supplied with four resilient feet suitable for table-
top placement. The amplier shall be capable of two-
channel operation, with a switch to place the amplier
into single-channel operation by bridging the outputs of
the two channels.
2. POWER OUTPUT. The two-channel power ampli-
er shall deliver a rated continuous average sine wave
power output over a 40Hz to 20kHz bandwidth of 150
watts RMS into 8 ohms per channel, 225 watts into 4
ohms, and 280 watts into 2 ohms with both channels
operating, with no more than 0.10% total harmonic dis-
tortion. In single-channel operation it shall deliver 450
watts RMS into 8 ohms and 560 watts into 4 ohms, with
no more than 0.10% total harmonic distortion.
The power amplier shall deliver a maximum continu-
ous average sine wave power at mid band of 175 watts
RMS into 8 ohms per channel, 275 watts into 4 ohms,
and 400 watts into 2 ohms with both channels operat-
ing, with no more than 1% total harmonic distortion. In
single-channel operation it shall deliver 550 watts RMS
into 8 ohms and 800 watts into 4 ohms, with no more
than 1% total harmonic distortion.
3. POWER SUPPLIES. All necessary operating volt-
ages for the amplier 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 an electronically balanced line-
level input, presenting no less than a 20k ohm imped-
ance to the source. Each input shall have an input sensi-
tivity of +4 dBu, 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 amplier. 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 mon-
aural input channel shall be equipped with a gain control
appearing on the front panel, each having 20 detent
positions, and calibrated in dB and volts.
6. FRONT PANEL INDICATORS. Each channel shall
have an associated ve-segment LED meter appearing
on the front panel, capable of displaying –20 dB, –9 dB,
–6 dB, –3 dB, and overload. Two temperature status
LEDs shall appear on the front panel, one to indicate
normal operation (NORMAL) and one to indicate thermal
protection (HOT).
7. PROTECTION FEATURES. The amplier shall pro-
vide delayed activation of the outputs at turn-on. Each
channel shall have a short-circuit protection circuit for
detecting excessive current ow at the output. When acti-
vated, the circuit limits the current delivered to the short,
protecting the output stage. The amplier shall have a
thermal protection circuit to protect the power devices
from over-temperature operation. The circuit shall acti-
vate when the internal temperature crosses the safe-oper-
ating threshold and, when activated, mute the outputs
until the internal temperature cools to a safe-operating
temperature, at which time amplier shall resume normal
operation. The amplier shall have a fan to cool the heat-
producing internal components, drawing cool air in from
the front, and exhausting warm air out through both
sides. The fan shall operate at two speeds, the speed
being determined be the internal temperature and the
signal level present at the output. The amplier shall
have an SCR crowbar circuit to protect the speakers
against a catastrophic amplier failure. The circuit shall
activate in the presence of continuous DC at the speaker
outputs, and shall shut the amplier down by opening
the internal AC mains fuse.
8. OUTPUT CONNECTIONS. M•800 (U.S. Version):
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.
M•800 (International Version): 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 (120V
versions only) as well as spade lugs or bare wires. Each
channel shall have a Neutrik brand Speakon®‚ speaker
output jack appearing on the rear panel in parallel with
the binding post output.
9. AMP MODES. The amplier shall have a three-way
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 chan-
nels out), and bridge (one channel in, one channel out,
bridged between both speaker outputs).
10. LIMITER. The amplier shall have a two-way
switch appearing on the rear panel for selecting between

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M•800 High-Current Power Amplier
AMPLIFIER
M•800
M•800 High-Current Power Amplier
OF 8 PAGES
AMPLIFIER
M•800
www.mackie.com
16220 Wood-Red Road NE, Woodinville, WA 98072 USA
800.898.3211, fax [phone], [e-mail]
UK +44.1268.570.808, fax [phone], [e-mail]
M•800
High-Current Power Amplier
1OF 8 PAGES
AMPLIFIER
M•800
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AMPLIFIER
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(continued from page 6)
7
limiter on and limiter off. The defeatable electronic limiter
circuit shall sense the onset of clipping and shall limit the
input signal and thereby prevent the output from clipping.
11. LOW-CUT FILTER. Each channel shall have a low-
cut lter with a variable frequency control appearing on
the rear panel covering a range of 10Hz (OFF) to 170Hz.
12. CONSTANT DIRECTIVITY HORN EQ. Each chan-
nel shall have a two-way switch appearing on the rear
panel for selecting a constant directivity horn equaliza-
tion circuit. When selected, this circuit shall provide a 6
dB 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 amplier shall
be rack-mountable with rear support rails for extra sup-
port, and shall have a steel chassis frame painted gray-
black. The amplier shall be 19" wide (483mm), 3.5" (2U)
tall (89mm), and 15.25" deep (387mm), and shall weigh
36 pounds (16.3 kg).
14. DESIGNATION. The power amplier shall be a
Mackie M•800.

OF 8 PAGES
M•800 High-Current Power Amplier
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M•800 High-Current Power Amplier
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AMPLIFIER
M•800
www.mackie.com
16220 Wood-Red Road NE, Woodinville, WA 98072 USA
800.898.3211, fax [phone], [e-mail]
UK +44.1268.570.808, fax [phone], [e-mail]
M•800
High-Current Power Amplier
1OF 8 PAGES
AMPLIFIER
M•800
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AMPLIFIER
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vates the internal limiting circuits. This results in no
latching, instant recovery from overdriving the amp,
and a superior sound.
 The M•800 uses a unique T-Design constant-gradi-
ent cooling tunnel that draws air in through the front
of the amplier and forces it out through the ampli-
er’s sides. The T-Tunnel design provides a shorter,
more direct path for cool air. This allows for reduced
heat build up and cooler transistor operation.
8
Electronic les for this product available at:
www.mackie.com
This Specication Sheet M800_SS.PDF
Owner/Operator’s Manual M800_OM.PD
LOUD Technologies continually engages in research related to product improvement. New material,
production methods, and design renements are introduced into existing products without notice
as a routine expression of that philosophy. For this reason, any current LOUD Technologies product
may differ in some respect from its published description, but will always equal or exceed the origi-
nal design specications unless otherwise stated. ©1999-2004 LOUD Technologies Inc. All rights
reserved.
Part No. 091-212-00 Rev B 9/04
(continued from page 1)