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SPECIFICATIONS
Continuous Average Output Power, both
channels driven:
M•1200
225 watts per channel into 8 ohms from 20Hz to 20kHz,
with no more than 0.025% THD
400 watts per channel into 4 ohms from 20Hz to 20kHz,
with no more than 0.050% THD
600 watts per channel into 2 ohms from 20Hz to 20kHz,
with no more than 0.095% THD
Bridged mono operation:
800 watts into 8 ohms from 20Hz to 20kHz, with no more
than 0.050% THD
1200 watts into 4 ohms from 20Hz to 20kHz, with no
more than 0.095% THD
M•1400
250 watts per channel into 8 ohms from 20Hz to 20kHz,
with no more than 0.012% 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:
280 watts per channel into 8 ohms
480 watts per channel into 4 ohms
700 watts per channel into 2 ohms
960 watts into 8 ohms bridged
1400 watts into 4 ohms bridged
Note: The M•1200/M•1400 power amplifiers draw large
amounts of current from the AC line with continuous
sine wave testing. Accurate measurement of power re-
quires 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.
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 < 0.025% @ 8Ω
< 0.050% @ 4Ω
< 0.150% @ 2Ω
Signal-to-Noise Ratio:
> 107 dB below rated power into 4 ohms
Channel Separation:
> 80 dB @ 1kHz
Damping Factor:
> 350 from 0 to 400Hz
Input Impedance:
20kΩ balanced bridging
Input Sensitivity:
1.23 volts (+4 dBu) for rated power into 4 ohms
Gain:
30.25 dB (32.5V/V)
Maximum Input Level:
9.75 volts (+22 dBu)
Rise Time:
< 4.4µs
Slew Rate:
Voltage Slew Rate > 50V/µs
> 100V/µs bridged
Current Slew Rate > 32A/µs at 2Ω
CMRR:
> 40 dB, 20Hz to 20kHz
Load Angle:
8(+jω) time independent at 8Ω
4(+jω) time dependent, T > 6 min. at 4Ω
2(1+jω) 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 seconds
Variable High-Pass Filter:
10Hz (Off) to 170Hz, 2nd Order Bessel
Subwoofer Low-Pass Filter:
Switched: 63Hz/125Hz, 3rd Order Bessel
Constant Directivity High Frequency Boost:
2.5kHz to 6kHz (+3 dB points)
6 dB/octave high-frequency shelving filter,
(shelving occurs at approximately 30kHz)