McIntosh MA-6100 amplifier

The finest Pre-Amplifier / Power Amplifier combination

Outstanding versatility in selection of inputs and outputs for multiple tape recording and monitoring. You can even duplicate tapes from one recorder to another while listening to yet a different program source such as records or tuner

Main and Remote speaker switching from the front panel

Reproduces music accurtely with 0,2% distortion from 20 Hz to 20 kHz at full continuous 70 watts RMS per channel, both channels operating into 8 Ω

"Sentry Monitoring" of the output transistors is a McIntosh-patented electronic protection circuit that really protects.

Speciall McIntosh designed output electronic clamping circuit completely protects speakers from possible DC current damage.

Silicon Rectifier power supplies, including one electronically regulated, insure maximum stability on both steady state and transient program material

18,600 microfarads of filter capacity is used in the main positive and negative power supplies. This assures minimum impulse distortion and full power at the lowest frequencies

Fully Direct-Coupled, quasi-complementary output circuit for low distortion and long term durability.

Specifications

Power Output:

70 watts minimum sine wave continuous average power output, per channel, both channels operating into 8 Ω  load impedance which is 23,7 volts RMS across 8 Ω

40 watts minimum sine wave continuous average power output, per channel, both channels operating into 16Ω  load impedance which is 25,3 volts RMS across 16 Ω

Output Load Impedance:  8 Ω  or 16 Ω

Rated Power Band:  20 Hz to 20,000 Hz

Total Harmonic Distortion:  0,2% maximum harmonic distortion at any power level from 250 milliwatts to rated power per channel from 20 Hz to 20,000 Hz , both channels operating

Intermodulation Distortion:  0,2% (if instantaneous peak power output is twice rated contiuous average power or less per channel with both channels operating for any combination of frequencies 20 Hz to 20 kHz)

Frequency Response:  20 Hz to 20,000 Hz (+0 -,05 dB at rated power)

Damping Factor:  50 at 8 Ω , 100 at 16 Ω 

Noise and Hum:

Power Amplifier:  95 dB below rated output

Aux, Tape, Tuner:  90 dB below rated output

Phono Input, Tape Hd:  76 dB below 10 mV input

Input Sensitivity and Impedance:

Power Amplifier:  3 volts / 100,000 Ω

Phono 1 and Phono 2 :  2,5 mv at 1000 Hz / 47,000 Ω

Tape head :  3 mV / 47,000 Ω

Tape, Aux, Tuner :  300 mv / 250,000 Ω

Bass Controls:  +16 dB to -16 dB at 20 Hz

Treble Control :  +16 dB to -16 dB at 20 kHz

LF Filter:  Active filter, 12 dB per octave rolloff below 50 Hz ; 20 dB down at 20 Hz

HF Filter:  Active filter, 12 dB per octave rolloff above 7000 Hz ; 20 dB down at 20,000 Hz

Semiconductors:  36 Silicon Transitors; 22 Silicon Rectifirs and Diodes; 2 Silicon Bilateral Switches; 2 Triac

Power Requirements:  120 volts, 50/60 Hz, 50 watts at zero signal output, 380 watts at rated output

Dimensions:

Front panel [W x H]:  406 mm (16") x 138 mm (5-7/16")

Chassis [W x D]:  381 mm (15") x 330 mm (13") Including Panloc shelf and back panel conectors. Knob clearance required is 38 mm (1-1/2") in front of mounting panel

Weight:  15,43 kg (34 pounds) net

Finish:

Front panel :  Anodized gold and black with special gold/teal panel nomenclature illumination

Chassis :  chrome and black

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