Marantz 4270 Stereo 2+ Quadradial 4 Receiver Audiophile 70 WPC Working
USD $1,050.00
Condition : Used
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Marantz 4270 Stereo 2 + Quadradial 4 Receiver
Power out
140 W (undistorted)
.Dimensions (WHD)
440 x 137 x 365 mm / 17.3 x 5.4 x 14.4 inch
Notes
A stereo/quadradial receiver with an AM/FM tuner and integrated amplifier with power output of 2 x 70 watts RMS into 8 ohms or 4 x 25 watts RMS into 8 ohms, housed in a metal case (a wooden case an optional extra). Preamplifier and Power amplifier sections can be separated. With a "Vari-Matrix" circuit which simulates 4 channel sound from 2 channel stereo sound and will reproduce any discrete 4 channel program as well as stereo and mono. Also optional plug-in SQ decoders for any specific matrix system eg: the Marantz SQA-1 SQ Adaptor for the CBS SQ system. PLL FM stereo MPX decoder. Built-in 2 channel Dolby unit. Meters for Signal Strength/Dolby output Level and FM Tuning, gyro-touch tuning wheel, Bass, Mid and Treble rotary tone controls. On the rear, a DIN socket for optional RC-4 wired remote control, terminals for AM and FM antennae, an AM ferrite rod aerial, input sockets for Phono, Tape 1, Tape 2 and CD-4 Aux, a Power Mode switch for 2 x 70 watts stereo or 4 x 25 watts quadrophonic output, 16 terminals for 8 pairs of loudspeakers, (4 Front, 4 Rear), two jacks for Headphones, front and rear, etc.
Specification
FM Section
Tuning Frequency Range 88-108MHz
IHFM Usable Sensitivity 2.3µV
IHF Selectivity 60dB
Capture Ratio 1.6dB
Image Rejection Ratio at 106MHz 70dB
Signal to Noise Ratio 70dB (Mono), 60dB (Stereo)
Total Harmonic Distortion 0.2% (Mono), 0.3% (Stereo)
Frequency Response 30Hz-15kHz ±1dB
Stereo Separation at 1KHz 40dB
Quadradial Output (400Hz 75kHz dev.) 300mV
AM Section
Tuning Frequency Range 540-1605kHz
Usable Sensitivity 30µV
Selectivity 26dB
Image Rejection Ratio at 1400kHz 70dB
Signal to Noise Ratio 45dB
Frequency Response (-6dB) 50Hz-3.5kHz
Total Harmonic Distortion 1%
Audio Section
Rated Continuous (RMS) Output
all channels driven at 40Hz-20kHz
for Less than 0.3% harmonic distortion 25W into 8Ω
25W into 4Ω
13W into 16Ω
Intermodulation distortion Less than 0.3% harmonic distortion
Input Impedance/Sensitivity
Phono
Line 47kΩ/2.2mV for 25W output
100kΩ/150mV for 25W output
Frequency Response 20Hz-20kHz ±1.0dB at 1W output
Damping Factor More than 45 at 8Ω
Versions/Power requirements
120V AC 50/60Hz
220V AC 50Hz
110/120/220/240V AC 50/60Hz with voltage selector
Power out
140 W (undistorted)
.Dimensions (WHD)
440 x 137 x 365 mm / 17.3 x 5.4 x 14.4 inch
Notes
A stereo/quadradial receiver with an AM/FM tuner and integrated amplifier with power output of 2 x 70 watts RMS into 8 ohms or 4 x 25 watts RMS into 8 ohms, housed in a metal case (a wooden case an optional extra). Preamplifier and Power amplifier sections can be separated. With a "Vari-Matrix" circuit which simulates 4 channel sound from 2 channel stereo sound and will reproduce any discrete 4 channel program as well as stereo and mono. Also optional plug-in SQ decoders for any specific matrix system eg: the Marantz SQA-1 SQ Adaptor for the CBS SQ system. PLL FM stereo MPX decoder. Built-in 2 channel Dolby unit. Meters for Signal Strength/Dolby output Level and FM Tuning, gyro-touch tuning wheel, Bass, Mid and Treble rotary tone controls. On the rear, a DIN socket for optional RC-4 wired remote control, terminals for AM and FM antennae, an AM ferrite rod aerial, input sockets for Phono, Tape 1, Tape 2 and CD-4 Aux, a Power Mode switch for 2 x 70 watts stereo or 4 x 25 watts quadrophonic output, 16 terminals for 8 pairs of loudspeakers, (4 Front, 4 Rear), two jacks for Headphones, front and rear, etc.
Specification
FM Section
Tuning Frequency Range 88-108MHz
IHFM Usable Sensitivity 2.3µV
IHF Selectivity 60dB
Capture Ratio 1.6dB
Image Rejection Ratio at 106MHz 70dB
Signal to Noise Ratio 70dB (Mono), 60dB (Stereo)
Total Harmonic Distortion 0.2% (Mono), 0.3% (Stereo)
Frequency Response 30Hz-15kHz ±1dB
Stereo Separation at 1KHz 40dB
Quadradial Output (400Hz 75kHz dev.) 300mV
AM Section
Tuning Frequency Range 540-1605kHz
Usable Sensitivity 30µV
Selectivity 26dB
Image Rejection Ratio at 1400kHz 70dB
Signal to Noise Ratio 45dB
Frequency Response (-6dB) 50Hz-3.5kHz
Total Harmonic Distortion 1%
Audio Section
Rated Continuous (RMS) Output
all channels driven at 40Hz-20kHz
for Less than 0.3% harmonic distortion 25W into 8Ω
25W into 4Ω
13W into 16Ω
Intermodulation distortion Less than 0.3% harmonic distortion
Input Impedance/Sensitivity
Phono
Line 47kΩ/2.2mV for 25W output
100kΩ/150mV for 25W output
Frequency Response 20Hz-20kHz ±1.0dB at 1W output
Damping Factor More than 45 at 8Ω
Versions/Power requirements
120V AC 50/60Hz
220V AC 50Hz
110/120/220/240V AC 50/60Hz with voltage selector
Price type
IN STOCK
OUT STOCK
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