Rotel RM-820 specifications

Brand : Rotel

General

Connections

Tech nical data

Radio FM (FM)

Radio AM (medium wave (if necessary long-))

Cassette recorder

Turntable

Amplifier

The RM-820 was mostly used as a set , ,System 820" with rack and RL-820 speakers are offered.

Kombi Other models of the Stan-Curtis series:

number of inputs: 4
- Phono MM: 2.5 mV / 47kohms
- Aux: 150mV / 33kOhm
- microphone R+L: 300µV / 10kOhm
- antenna: FM 75 + 600 Ohm , THE
number of outputs: 3
- speakers: 2 pairs, separately switchable, 4 - 16 Ohm s
- headphone: 1x 4 - 16 Ohm s

frequency: 88 - 108 MHz
input sensitivity (Mono): 11,0 dBf/2,0 µV
DIN sensitivity 26db SNR of 75 Ohm s: 1,6 µV
minimum sensitivity 50dB SNR:
- Mono: 18,2 dBf, 4.5 µV
- Stereo: 40,7 dBf in 60µV
signal-to-noise ratio (SNR) at 65dBf: Mono: 70dB / Stereo: 65dB
total harmonic distortion (THD) at 65dBf: (Mono/Stereo)
- 100 Hz: 0,3% / 0,5%
- 1kHz: 0,3% / 0,5%
- 6kHz is 0.35% / 0.6% in
frequency response: 30Hz - 14kHz -3,0/+0.3 dB
reception ratio: 2.0 dB
in addition to channel rejection: 65dB at +/-400kHz
interference suppression: 70dB
mirror frequency attenuation: 45dB
ZF-attenuation: 75dB
ON-loss: 62dB
channel separation in Stereo:
- 100Hz: 30dB
- 1kHz: 38dB
- 10kHz: 30dB
pilot tone damping: 60dB
SCA-loss: 60dB

heads:
- recording/playback: High-B Permalloy type
- erase head: ferrite core
motor: 1
flutter: 0.1% of DIN, a 0.07% Wrms
tape type: Normal, chrome, metal
distortion with 0dB=580mV at 400Hz (Metal): 1,0%
frequency response gain -20dB:
- Normal LH: 30Hz - 15kHz, +/-3dB
- Special: 30Hz - 15kHz, +/-3dB
- Metal: 30Hz - 16kHz, +/-3dB
Signal-to-noise ratio: WTD 0dB=580mV chrome:
- Dolby NR: 64dB
- Dolby off: 55dB
input sensitivity and impedance:
- Mic: 300µV 10kOhm
rewind Time C-60: 90s
band places switching Bias/EQ:
- Normal: 100% 120µs
- Special: 160% 70µs
- Metal: 200% 70µs
Dolby: No switchable

drive: belt
Motor: electronically controlled DC motor
speed: 33-1/3 + 45 Upm
Wow + Flutter: 0,08% (Wrms)
signal-to-Noise ratio: 55dB according to IEC or 58dB according to DIN
platter: aluminium die-cast diameter of 300mm
modes of operation: Semi-Automatic
- manual Start and automatic Return in case of LP-end
tonearm: straight aluminum tonearm tube and counterweight
- recommended tracking force: max. 3g

Type: Moving Magnet (MM)

Frequency Response: 25Hz - 15kHz

Channel Separation: 23dB at 1kHz

Output Impedance: 47 kOhm

Contact force: 2.5 - 3.5g

System Weight: 6.0g

Designation Replacement needle: MM-18F3S

Rated power 20Hz - 20kHz according to IHF-a:
- 8 Ohm : 20W at <0.08% THD
- 4 Ohm : 40W at <0.08% THD
Continuous power 1kHz Sine according to DIN:
- 8 Ohm : 15W at 1% THD
- 4 ohm: 25W at 1% THD
Total harmonic distortion IHF-a: <0.08%
Attenuation factor: 40 at 1kHz at 8 ohms
Intermodulations (TIM): <0.08%
- 60Hz : 7kHz = 4 : 1
Input voltage max. at 0.5% THD and 1kHz:
- Phono: 95mV
- Aux: 3000mV
frequency response IHF-a:
- Phono: 20Hz - 15kHz +/-0.3 dB RIAA-Standard
- Aux: 10Hz - 40kHz -3,0/+1.0 dB
Signal-to-noise ratio according IHF-a:
- Phono: 80dB
- Aux: 90dB
control:
- Bass: +/- 10dB at 100Hz
- treble sound: +/- 10dB at 10kHz
Loudness: switchable
- +7dB at 100Hz and +4 dB at 10kHz
- in the case of Volume -40dB