MACKIE M800 - Manual (Page 23)

23
M•800 SPECIFICATIONS
Maximum Power:
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
Note: Power ratings are specified at 120VAC line voltages.
The M•800 power amplifier draws large amounts of cur-
rent from the AC line with continuous sine wave testing.
Accurate measurement of power requires a steady and
stable AC supply. This means the line impedance must
be very low to insure that the peak AC line voltage does
not sag to less than 97% of its value.
If driving highly reactive loads, we recommend that the
limiter circuit be engaged.
Continuous Sine Wave Average Output Power,
both channels driven:
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:
20Hz to 40kHz (+0, –1 dB)
10Hz to 70kHz (+0, –3 dB)
Distortion:
THD, SMPTE IMD, TIM (at rated power)
< 0.025% @ 8
Ω
< 0.05% @ 4
Ω
< 0.1% @ 2
Ω
Signal-to-Noise Ratio:
> 104 dB below rated power into 4 ohms
Channel Separation:
> 70 dB @ 1kHz
Damping Factor:
> 250 from 10 to 400Hz
Input Impedance:
20k
Ω
balanced
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:
< 5
µ
s
Slew Rate:
Voltage Slew Rate > 40V/
µ
s
> 80V/
µ
s bridged
Current Slew Rate > 20A/
µ
s at 2
Ω
CMRR:
> 40 dB, 20Hz to 20kHz
Load Angle:
8(
±
jx) time independent at 8
Ω
4(
±
jx) time dependent, T > 6 min. at 4
Ω
2(1
±
jx) time dependent, T > 2 min. at 2
Ω
Transient Recovery:
< 1
µ
s 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 5.5kHz (+3 dB points)
6 dB/octave high-frequency shelving filter,
(shelving occurs at approximately 30kHz)