Mackie M-800, Service Manual, Page: 6 / 22

6
Average Peak
Current Current
Amplifier Loading Required Required
2
Ω
per side or 4
Ω
bridged 7 A 16 A
4
Ω
per side or 8
Ω
bridged 4.5 A 11 A
8
Ω
per side or 16
Ω
bridged 3 A 6.5 A
Power Consumption:
55 watts at idle
400 watts with musical pro-
gram fully loaded
(4
Ω
per side, or
8
Ω
bridged)
600 watts with musical pro-
gram fully loaded
(2
Ω
per side, or
4
Ω
bridged)
550 watts at rated power
into 8
Ω
(continuous
sine wave)
950 watts at rated power
into 4
Ω
(continuous
sine wave)
1500 watts at rated power
into 2
Ω
(continuous
sine wave)
AC Drop-out Voltage:
At approximately 65% of rated line
voltage
Physical:
Height 3.5 inches (89mm)
Width 19.0 inches
(483mm)
Depth 15.25 inches
(387mm)
Overall Depth 16.25 inches
(413mm)
Weight 28 pounds (12.7kg)
Disclaimer
Since we are always striving to
make our products better by incor-
porating new and improved
materials, components, and manu-
facturing methods, we reserve the
right to change these specifica-
tions at any time without notice.
Owner’s manual addendum
NOTE: The specifications are from the owner’s manual ad-
dendum, and not from the initial release of the owner’s
manual. Since the owner’s manual was produced, there
have been a few other changes as follows:
Bridge Mode
The amplifier can accept inputs from Channel 1 and from
Channel 2. If you do this, the two inputs will be summed
and the result sent to the Bridge Mono output. Only Chan-
nel 1’s gain pot will control the overall volume. However,
you must adjust the CD-EQ and Low-Cut Filter correctly on
each input used.
The Meters
The meters indicate the power level referenced to the
clipping point of the amplifier, not to the rated power.
AC Power Considerations
The amplifier will continue to operate down to 65% of the
rated line voltage, and will mute if the line drops lower
than this.
The table below shows the average and peak current
draw from a 120VAC line for various speaker loads. For ex-
ample, if you are running the amplifier in stereo using
2
Ω
speakers, the average current draw from the 120VAC
line is 7 amps.
specifications continued.