Mackie FR Series M.800 User Manual

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O F 8 P A G E S
M•800
High-Current Power Amplier
AMPLIFIER
M800
M•800
High-Current Power Amplier
O F 8 P A G E S
AMPLIFIER
M800
www.mackie.com
16220 Wood-Red Road NE, Woodinville, WA 98072 USA
800.898.3211, fax 425.487.4337, sales@mackie.com
UK +44.1268.570.808, fax +44.1268.570.809, uk@mackie.com
M•800
High-Current Power Amplier
1
O F 8 P A G E S
AMPLIFIER
M800
O F 8 P A G E S
M•800
High-Current Power Amplier
AMPLIFIER
M800
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)
M1400/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, SR244-
VLZ PRO 24 Channel Mic/Line Mixer, SR324-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.
R E L A T E D P R O D U C T S
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-
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Summary of Contents

Page 1 - AMPLIFIER

O F 8 P A G E S M•800High-Current Power AmplierAMPLIFIERM•800M•800High-Current Power AmplierO F 8 P A G E S AMPLIFIERM•800www.mackie.com16

Page 2

O F 8 P A G E S M•800High-Current Power AmplierAMPLIFIERM•800M•800High-Current Power AmplierO F 8 P A G E S AMPLIFIERM•800www.mackie.com16

Page 3 - High-Current Power Amplifer

O F 8 P A G E S M•800High-Current Power AmplierO F 8 P A G E S M•800High-Current Power AmplierO F 8 P A G E S M•800High-Current Power

Page 4 - O F 8 P A G E S

O F 8 P A G E S M•800High-Current Power AmplierO F 8 P A G E S M•800High-Current Power AmplierO F 8 P A G E S M•800High-Current Power

Page 5

O F 8 P A G E S M•800High-Current Power AmplierO F 8 P A G E S M•800High-Current Power AmplierO F 8 P A G E S M•800High-Current Power

Page 6

O F 8 P A G E S M•800High-Current Power AmplierO F 8 P A G E S M•800High-Current Power AmplierO F 8 P A G E S M•800High-Current Power

Page 7

O F 8 P A G E S M•800High-Current Power AmplierAMPLIFIERM•800M•800High-Current Power AmplierO F 8 P A G E S AMPLIFIERM•800www.mackie.com16

Page 8

O F 8 P A G E S M•800High-Current Power AmplierAMPLIFIERM•800M•800High-Current Power AmplierO F 8 P A G E S AMPLIFIERM•800www.mackie.com16

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