明盘出原装美国制造麦景图MCINTOSH MAC 4100 RECEIVER FM/AM 收音晶体管综合扩大机(100W+100W/每声道)，Power Guard, 5 Band EQ，內建MCINTOSH高級等化器，有三组喇叭输出，可单独当前级使用另接后级，亦可单独当后级使用的功能，內建高级收音机, AM,唱頭放大。 两侧和上盖为木面板，比普通的铁壳更加高贵。不同于普通的石机，音色保留麦景图的传统优点，石机胆味。
机器无修无摩，除了顶板有一处碰花瑕疵，保养很好且成色非常新净，状况极佳，面板和后背字体100%清晰，所有灯都正常亮着，各个旋钮功能正常且保持良好，FM/AM收音正常稳定不飘移，保证完全正常使用，机子是110V。
广州市欢迎上门试机自提，
SPECIFICATIONS
POWER OUTPUT
100 watts minimum sine wave continuous average
power output, per channel, both channels operating
into 4 ohms 20 Hz to 20 kHz, with no more than .05%
total harmonic distortion.
75 watts minimum sine wave continuous average
power output, per channel, both channels operating
into 8 ohms 20 Hz to 20 kHz, with no more than .05%
total harmonic distortion.
OUTPUT LOAD IMPEDANCE
4 ohms, 8 ohms
RATED POWER BAND
20 Hz to 20 kHz
TOTAL HARMONIC DISTORTION
.05% maximum at any power level from 250
milliwatts to rated power per channel, 20 Hz to 20
kHz, both channels operating.
INTERMODULATION DISTORTION
.05% maximum at any power level from 250
milliwatts to rated power per channel both channels
operating for any combination of frequencies 20 Hz
to 20 kHz.
FREQUENCY RESPONSE
20 Hz to 20 kHz + 0, -0.5 dB at rated power
HUM AND NOISE
Power Amp: 100 dB IHFA, 95 dB unweighted, below
rated output
Tape and Aux Input: 95 dB IHFA, 90 dB unweighted,
below rated output
Phono Input: 90 dB IHFA, 80 dB unweighted, below
10 mY input
DAMPING FACTOR
Greater than 30
INPUT SENSITIVITY AND IMPEDANCE
Power Amp: 2.5 V; 22,000 ohms
Tape and Aux: 250 mV; 100,000 ohms
Phono: 2 mV; 47,000 ohms; 87 pF
TAPEOUTPUT
Tuner: 1.0 V at 100% modulation [FM]
Tape: 250 mV with rated input
Phono: 250 mV with rated input
PROGRAM EQUALIZER
± 12 dB at 30, 150,500, 1500, and 10,000 Hz
AM SECTION
SENSITIVITY
75 uV I H F [External antenna]
SIGNAL TO NOISE RATIO
45 dB minimum IHF, 55 dB at 100% modulation
HARMONIC DISTORTION
1% maximum at 30% modulation
FREQUENCY RESPONSE
3500 Hz @ -6 dB
ADJACENT CHANNEL SELECTIVITY
30 dB minimum IHF
IMAGE REJECTION
65 dB minimum, 540 kHz to 1600 kHz
FM SECTION
SENSITIVITY
2.5 uV [13 dBF] IHF minimum
SIGNAL TO NOISE RATIO
70 dB IHF minimum
HARMONIC DISTORTION
Mono: 0.18% IHF maximum
Stereo: 0.38% IHF maximum
FREQUENCY RESPONSE
20 Hz to 15 kHz +0, -1 dB
CAPTURE RATIO
1.8 dB
SELECTIVITY
75 dB IHF minimum
SPURIOUS REJECTION
90 dB IHF minimum
