Amplificator Dual CR 1730

Amplificator Dual CR 1730: 5 intrari, 4 iesiri, impedanta 4-16 ohmi, 2x50W, 2x75W, culoare argintie, reglaje bass, treble, balance, high/low filter, loudness, radio cu memorii, afisaj, AM/FM, poze reale, made in Germany.

General

Manufacturer: Dual
Model: CR 1730
Years of manufacture: 1979 - 1981
Made in: Japan
Color: Metallic silver, Metallic brown
Remote control: no
Power consumption:
Dimensions: 440 x 112 x 400 mm (WxHxD).
Weight: 9 kg
Original price approx.: 698 DM

Connections

Number of inputs:
Phono (MM): 1.8 mV / 47 kOhm, by switch also 5.0 mV /47 kOhm, DIN and Cinch.
Tape 1 In: 200 mV / 470 kOhm (DIN and Cinch), Tape 2 In: 200 mV / 470 kOhm (Cinch on the rear panel and 6.3 mm jack plug on the front panel) AUX (DIN)

Monitor In (Cinch)
Number of outputs:
2x Tape Out, Monitor Out
Headphones (6.3 mm jack, front)
2 pairs of speakers

Technical Data

Amplifier

Continuous power (according to DIN)
8 Ohm:
4 Ohm: 2 x 55 W
Music power
8 Ohm:
4 Ohm: 2 x 75 W
Total harmonic distortion: 0.08% (2x 35 W, 1 kHz)
Attenuation factor: > 20
Frequency response:
10 - 30 kHz (DIN 45 500)
10 - 40,000 Hz (± 1.5 dB)

External voltage spacing: (DIN, nominal power)
Phono: 65 dB
High level: 62 dB

Noise voltage spacing:
Phono: 80 dB
High level: 90 dB

Crosstalk attenuation:
between channels: > 50 dB
between the inputs: > 65 dB
Tone control:
Bass: yes, ± 14 dB at 40 Hz
treble: yes, ± 14 dB at 15 kHz

Loudness: yes
High Filter: yes, - 3 dB at 6.5 kHz (12 dB/octave)
Low Filter (Subsonic): yes, - 3 dB at 50 Hz (12 dB/octave)

Tuner

Reception: FM, MW, LW.
Frequencies:
FM: 87.5 - 108 MHz
MW: 510 - 1,620 kHz
LW: 150 - 340 kHz

Frequency response: 40 Hz - 12.5 kHz
Input sensitivity:
VHF: 0.8 µV (mono), 25 µV (stereo)
MW: 30 µV LW: 30 µV

Distortion factor: 0.2% (mono/stereo)
S/N ratio: 60 dB (mono), 62 dB (stereo)
Crosstalk attenuation at 1 kHz: 40 dB
Channel separation:
Selectivity: 65 dB
Co-wave selection:
Spurious wave selection:
IF immunity: 80 dB
IF noise immunity: 85 dB
AM suppression:
Station memory: 5

Special Features

FM muting