M1.2 Reference

LAMM Audio
  • 详细说明
  • 产品参数

MONAURAL POWER AMPLIFIER
Pure Class A hybrid amplifier producing 110 Watts into 8 AND 4 Ohms, 400 Watts into 2 Ohms, 600 Watts into 1 Ohm (continuous). Features hybrid vacuum tube/sold-state design with one specially selected 6922 vacuum triode. 12 high speed MOS-FET output transistors, no overall feedback. Switch-selectable bias/voltage settings for 8- or 4-Ohm operation. XLR and RCA inputs; 2 pairs of binding posts. Remote control: power on/off.

Rated Output Power  
HIGH IMPEDANCE SETTING  
minimum continuous sine-wave power,  
from 20Hz-20KHz with no more than:  
0.3% THD (FTC) @ rated line voltage 110 Watts into 8 Ohms (Class A operation).
0.3% THD (FTC) @ rated line voltage 220 Watts into 4 Ohms (55 Watts Class A operation).
0.5% THD (FTC) @ rated line voltage 400 Watts into 2 Ohms (27.55 Watts Class A operation).
1% THD (FTC) @ rated line voltage 600 Watts into 1 Ohm (13.75 Watts Class A operation).
LOW IMPEDANCE SETTING  
minimum continuous sine-wave power,  
from 20Hz-20KHz with no more than: 110 Watts into 4 Ohms (Class A operation).
0.3% THD (FTC) @ rated line voltage 220 Watts into 2 Ohms (55 Watts Class A operation).
0.5% THD (FTC) @ rated line voltage 400 Watts into 1 Ohm (27.55 Watts Class A operation).
1% THD (FTC) @ rated line voltage  
Rated Output Voltage  
   
HIGH IMPEDANCE SETTING 42 Volts peak into 8 Ohms, corresponding to 220 Watts peak.
with continuous sine waves, from 20Hz-20KHz @ rated line voltage: 42 Volts peak into 4 Ohms, corresponding to 440 Watts peak.
  40 Volts peak into 2 Ohms, corresponding to 800 Watts peak.
  34.64 Volts peak into 1 Ohm, corresponding to 1,200 Watts peak.
   
LOW IMPEDANCE SETTING  
with continuous sine waves, from 20Hz-20KHz @ rated line voltage: 29.66 Volts peak into 4 Ohms, corresponding to 220 Watts peak.
  29.66 Volts peak into 2 Ohms, corresponding to 440 Wattspeak.
  28.28 Volts peak into 1 Ohm, corresponding to 800 Wattspeak.
Rated Output Current  
   
HIGH IMPEDANCE SETTING  
with continuous sine waves, from 20Hz-20KHz @ rated line voltage: 5.24 Amps peak into 8 Ohms, corresponding to 220 Watts peak.
  10.48 Amps peak into 4 Ohms, corresponding to 440 Wattspeak.
  20 Amps peak into 2 Ohms, corresponding to 800 Watts peak.
  42.43 Amps peak into 1 Ohm, corresponding to 1,200 Watts peak.
   
LOW IMPEDANCE SETTING 7.42 Amps peak into 4 Ohms, corresponding to 220 Watts peak.
with continuous sine waves, from 20Hz-20KHz @ rated line voltage: 14.84 Amps peak into 2 Ohms, corresponding to 440 Wattspeak.
  28.28 Amps peak into 1 Ohm, corresponding to 800 Wattspeak.
Maximum (clipping) Output Power  
HIGH IMPEDANCE SETTING  
continuous 1 KHz sine-wave power,  
with no more than:  
1% THD (FTC) @ rated line voltage  
1% THD (FTC) @ rated line voltage 150 Watts into 8 Ohms.
1% THD (FTC) @ rated line voltage 300 Watts into 4 Ohms.
1% THD (FTC) @ rated line voltage 500 Watts into 2 Ohms.
  700 Watts into 1 Ohm.
LOW IMPEDANCE SETTING  
continuous 1 KHz sine-wave power,  
with no more than: 150 Watts into 4 Ohms.
1% THD (FTC) @ rated line voltage 300 Watts into 2 Ohms.
1% THD (FTC) @ rated line voltage 450 Watts into 1 Ohm.
1% THD (FTC) @ rated line voltage  
Maximum (clipping) Output Voltage  
   
HIGH IMPEDANCE SETTING  
with continuous 1 KHz sine wave, 49 Volts peak into 8 Ohms, corresponding to 300 Watts
@ rated line voltage: 49 Volts peak into 4 Ohms, corresponding to 600 Watts peak.
  44.72 Volts peak into 2 Ohms, corresponding to 1,000 Wattspeak.
  37.42 Volts peak into 1 Ohm, corresponding to 1,400 Watts peak.
   
LOW IMPEDANCE SETTING 34.64 Volts peak into 4 Ohms, corresponding to 300 Watts peak.
with continuous 1 KHz sine wave, 34.64 Volts peak into 2 Ohms, corresponding to 600 Wattspeak.
@ rated line voltage: 30 Volts peak into 1 Ohm, corresponding to 900 Watts peak.
Maximum (clipping) Output Current  
  6.12 Amps peak into 8 Ohms, corresponding to 300 Watts peak.
HIGH IMPEDANCE SETTING 12.24 Amps peak into 4 Ohms, corresponding to 600 Wattspeak.
with continuous 1 KHz sine wave, 22.36 Amps peak into 2 Ohms, corresponding to 1,000 Wattspeak.
@ rated line voltage: 37.42 Amps peak into 1 Ohm, corresponding to 1,400 Watts peak.
LOW IMPEDANCE SETTING  
with continuous 1 KHz sine wave, 8.66 Amps peak into 4 Ohms, corresponding to 300 Watts peak.
@ rated line voltage: 17.32 Amps peak into 2 Ohms, corresponding to 600 Wattspeak.
  30 Amps peak into 1 Ohm, corresponding to 900 Watts peak.
Small Signal Frequency Response  
   
HIGH IMPEDANCE SETTING  
at 1 Watt into 8 Ohms @ rated line voltage:  
   
  (+0; -3dB) 4 Hz - 155 KHz.
   
LOW IMPEDANCE SETTING  
at 1 Watt into 4 Ohms @ rated line voltage:  
   
  (+0; -3dB) 4 Hz - 155 KHz.
Frequency Response  
   
HIGH IMPEDANCE SETTING  
at 110 Watt into 8 Ohms  
@ rated line voltage:  
  (+0; -3dB) 4 Hz - 155 KHz.
   
LOW IMPEDANCE SETTING  
at 110 Watt into 4 Ohms  
@ rated line voltage:  
  (+0; -3dB) 4 Hz -155 KHz.
Slew Rate  
Vout=83.9 Volts peak-to-peak of  
square-wave signal into 8 Ohms, 33.5 Volts per microsecond
F=10KHz @ rated line voltage:  
Rise Time  
Vout=83.9 Volts peak-to-peak of  
square-wave signal into 8 Ohms, 2 microseconds
F=10KHz @ rated line voltage:  
Noise  
Signal/Noise ratio ref. 2.83 Volts RMS into 8 Ohms (1 W):  
   
22 Hz – 22 KHz  
A weighted typically 68.5 dB
Signal/Noise ratio ref. 29.7 Volts RMS into 8 Ohms (110 W): typically 75.5 dB
22 Hz – 22 KHz  
A weighted  
  typically 89 dB
  typically 96 dB
IM Distortion  
   
HIGH IMPEDANCE SETTING  
(60Hz:7KHz 4:1) SMPTE:  
from 0.1-110 Watts into 8 Ohms  
@ rated line voltage  
from 0.1-220 Watts into 4 Ohms  
@ rated line voltage  
from 0.1-400 Watts into 2 Ohms no more than 1%
@ rated line voltage  
from 0.1-600 Watts into 1 Ohm no more than 1%
@ rated line voltage  
  no more than 1.5%
   
  no more than 1.5%
LOW IMPEDANCE SETTING  
(60Hz:7KHz 4:1) SMPTE:  
from 0.1-110 Watts into 4 Ohms  
@ rated line voltage  
from 0.1-220 Watts into 2 Ohms  
@ rated line voltage  
from 0.1-400 Watts into 1 Ohm no more than 1%
@ rated line voltage  
  no more than 1.5%
   
  no more than 2%
Voltage Gain  
Voltage Gain 39 ± 2% or 31.8 ± 0.2dB.
Inputs  
   
Balanced 3-pin gold-plated XLR connector.
  Pin assignment:
  pin 1 = signal ground;
  pin 2 = non-inverting input (+);
Non-inverting pin 3 = inverting input (-).
Inverting brass, gold plated, single-ended RCA connector (connected in parallel with pin 2 of XLR connector).
  brass, gold plated, single-ended RCA connector (connected in parallel with pin 3 of XLR connector).
Input Sensitivity  
   
HIGH IMPEDANCE SETTING 0.761 Volts RMS ± 2% for 110 Watts into 8 Ohms.
LOW IMPEDANCE SETTING 0.538 Volts RMS ± 2% for 110 Watts into 4 Ohms.
  0.538 Volts RMS ± 2% for 220 Watts into 2 Ohms.
  0.513 Volts RMS ± 2% for 400 Watts into 1 Ohm.
Input Impedance  
  41 KOhms shunted by 470pF.
Outputs  
  Two sets of brass, gold plated binding posts
Output Impedance  
   
at 1 KHz: typically 0.082 Ohm.
from 20 Hz – 20 KHz:  
  typically 0.082 +0.007/-0.002 Ohm.
Damping Factor  
   
at 1 KHz: typically 98 re: 8 Ohm.
from 20 Hz – 20 KHz:  
  typically 98 +2/-8 re: 8 Ohm.
Operating Temperature  
   
Operating Temperature -4 to +104 degrees Fahrenheit
  (-20 to +40 degrees Celsius) ambient.
Grounding  
   
Grounding Separated ground and earth.
  Floating chassis connected to mains earthing.
Power Supply  
nominal line voltage 100-240 Volts, 50/60Hz.
Input voltage range ±10%.
  Two power transformers, two filter chokes, eight separate power supplies.
AC voltage intensively filtered by special RFI power line filter.
Power Supply Energy Storage  
Power Supply Energy Storage Approximately 220 joules.
Front Panel Controls  
Front Panel Controls LED control.
Rear Panel Connectors and Controls  
   
Rear Panel Connectors and Controls POWER SWITCH.
  LOAD SWITCH.
  AC POWER INLET.
  AC MAINS FUSE, along with the corresponding fuse holder.
  One input XLR connector, gold-plated.
  Two input RCA connectors, gold-plated.
  Two sets of gold-plated SPEAKER BINDING POSTS.
  Two DC power jacks (central pin 2mm dia.) for connecting remote link cables.
  EARTHING (GROUNDING) post, gold-plated.
Features  
AC voltage selector 100/120/220/230/240 Volts, internally switchable.
Transformer hum reducer Special circuit reduces power transformer core saturation and residual mechanical hum.
Ultra low-noise power transformer Custom-made toroidal power transformer has no mechanical contact with either the transformer cover or the chassis, as transformer is suspended in a special encapsulant that almost completely absorbs even the residual mechanical vibrations. This plays a significant role in assuring the absolutely unique clarity and micro-resolution during sound reproduction.
Bias setting (load) switch Switch-selectable biasing circuit maintains pure Class A operation of the output stage for all load conditions between 4-16 Ohms.
Remote control Power on/off.
Available remote link cable coordinates the remote functions of two or more amplifiers.
Safety/Protection "Soft-start" circuit protects power supply components from large in-rush currents when the amplifier is turned on.
Protection against possible damages from high voltage transients on AC power line.
Thermal resetting fuse connected in series with AC mains fuse controls heat-sink temperature.
Threshold: 176 degrees Fahrenheit
(80 degrees Celsius).
Thermal resetting fuse controls internal temperature of the power transformer.
Threshold: 248 degrees Fahrenheit
(120 degrees Celsius).
Unique electronic protection circuit guards against accidental abuse (e.g., overload, shorts across the output, excessive DC at the input or output, etc.).
AC voltage fuses:
6.25 Amps slo-blo for 100/120 Volts (3 Amps slo-blo for 220/230/240 Volts);
0.125 Amps slo-blo for 100/120/220/230/240 Volts, internally mounted.
General  
   
POWER CONSUMPTION  
Nominal: Typically 330 Watts @ rated output @ 8(4) Ohms (class A operation) and at idle.
  Typically 750 Watts @ rated output @ 1 Ohm
Maximum: (low impedance setting).
Burn-in Time at Factory: Minimum 72 hours.
Recommended Burn-in Time in End-user's System: Minimum 200 hours.
Warm-up time: Minimum 45 minutes.
Dimensions 8.25"(21cm)H x 17"(43.2cm)W x 19.5"(49.5cm)D
[add 2.8125"(7.14cm) of depth for front and rear handles].
Unit weight 68.5 Lbs (31 Kg).
Shipping weight 94 Lbs (42.7 Kg).
Tube Complement V101 - 6922 (second amplification stage)

额定输出功率:高阻抗设定(最小正弦波功率20Hz-20KHz)

0.3% THD (FTC):110W(8Ohms Class A)
0.3% THD (FTC):220W(4Ohms、55W Class A)
0.5% THD (FTC):400W(2Ohms、27.55W Class A)
1% THD (FTC):600W(1Ohm、13.75W Class A)

 

低阻抗设定(最小正弦波功率20Hz-20KHz)

0.3% THD (FTC):110W(4Ohms、Class A)
0.5% THD (FTC):220W(2Ohms、55W Class A)
1% THD (FTC) :400W(1Ohm、27.55W Class A)

 

额定输出电压

高阻抗设定(20Hz-20KHz):42V(8Ohms、220W)、42V(4Ohms、440W)、40V(2Ohms、800W)、34.64V(1Ohm、1200W)

低阻抗设定(20Hz-20KHz):29.66V(4Ohms、220W)、29.66V(2Ohms、440W)、28.28V(1Ohms、800W)

 

额定输出电流

高阻抗设定:5.24A(8Ohms、220W)、10.48A(4O、440W)、20A(2Ohms、800W)、42.43 A(1Ohm、1200W)

低阻抗设定:7.42A(4Ohms、220W)、14.84A(2Ohms、440W)、28.28A(1Ohm、800W)

 

最大输出功率(1kHz、1%失真)

高阻抗设定:150W(8Ohms)、300W(4Ohms)、500W(2Ohms)、700 W(1Ohm)

低阻抗设定:150W(4Ohms)、300W(2Ohms)450W(1Ohm)

 

频率响应 (+0、-3dB) :4Hz-155KHz

转换速率:33.5V(峰值83.9V 伏方波信号、8 欧姆、10kHz)

上升速率:2ms

S/N信噪比

(8Ohms、1W): 68.5dB(22Hz–22KHz)、75.5dB(A计权)

(8Ohms、110W): 89dB(22Hz–22KHz)、96 dB(A计权)
失真率(0.1-110W、8Ohms):1%

电压增益:39(±2% )、31.8(±0.2dB)

输入阻抗:41kOhms(470pF)
阻尼系数:98(1 KHz、20Hz–20KHz)

体积(HWD):21×43.2×49.5cm 

电源100-240V

耗电:330W(闲置)、750W(最大)

重量:31kg

工厂老化:72小时

建议系统老化:200小时

热机:45分钟

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