Beocord 1800 specifications

General

Connections

Tech nical data

Special equipment

Number of outputs: 3
- Radio (1.25V / 7.5 kΩ)
- Line (1.25V / 7.5 kΩ)
- Headphones: (0.8V / 47 kΩ or 1.8 V at 470 Ω, volume adjustable)
Number of inputs: 4
- Microphone (50-200 Ω sym., 35 µV / 1,000 Hz)
- Radio low impedance: (47 kΩ 2.5mV / 1,000 Hz)
- Radio high impedance: (100 kΩ 2.5mV / 1,000 Hz)
- Phono low impedance: (47 kΩ 2.5mV / 1,000 Hz)
- Phono high impedance: ( 100 kΩ 2.5mV / 1,000 Hz)
- Line (47 kΩ 250 mV / 1,000 Hz)

Microphone (50-200 Ω sym., 35 µV / 1,000 Hz)
Radio low impedance: (47 kΩ 2.5mV / 1,000 Hz)
Radio high impedance: (100 kΩ 2.5mV / 1,000 Hz)
Phono low impedance: (47 kΩ 2.5mV / 1,000 Hz)
Phono high impedance: ( 100 kΩ 2.5mV / 1,000 Hz)
Line (47 kΩ 250 mV / 1,000 Hz)

Coil Diameter: max. 18 cm
Drive: 1 Motor
Heads:
- Type 4132 (half-track unit): 4
- Type 4138 (quarter-track unit): 3
Tracks:
- type 4132 (half-track unit): 2, Playback also for quarter-track
- Type 4138 ( Quarter-track unit): 4
Belt speeds: 4,75 - 9,5 - 19 cm/s, max. Deviation 1%
slip:
flutter:
- at 4.75 cm/s: < 0,18% (RMS ), < 0,5% (peak)
- at 9.5 cm/s: < 0.11% for (effectively), < 0,3% (peak)
- at 19 cm/s: < 0,07% (effective), < 0,2% (peak)
pitch fluctuations:
total frequency response:
- at 4.75 cm/s: 30 - 7.500 Hz (±2 dB, 40 to 6000 Hz)
- at 9.5 cm/s: 20 - 15,000 Hz (±2 dB, 30 - 13,000 Hz)
- at 19 cm/s: 20 - 20,000 Hz (±2 dB, 30 - 18.000 Hz)
Signal-to-noise ratio:
- type 4132 (half-track): > 60 dB (DIN 45 405), > 65 dB (IEC -123-A)
- type 4138 (quarter track device): > 57 dB (DIN 45 405), > 62 dB (IEC -123-A)
s / n ratio:
THD:
equalization: DIN 45 513, 1966-67, NAB, 1965
distortion: < 3% above the Band at VU Zero
Crosstalk Mono: > 60 dB /1000 Hz, > 50 dB / 10,000 Hz
Crosstalk Stereo: > 55 dB / 1000 Hz, > 45 dB / 10,000 Hz
delete attenuation: 70 dB with a 100kHz push-pull oscillator
premagnetization and deletion frequency: 100 kHz