Receiver; Revox B285 Ti; Fm Tuner Section Ti; Am Tuner Section 714 - Revox B 285 Serviceanleitung

STUDER REVOX
B285
7/4
7 TECHNICAL DATA IHF STANDARD
7.1 RECEIVER REVOX B285
SE EEE na
7.1.1 FM Tuner Section
Tuning range: 87.5...108 MHz
tuning by means of a quartz referenced frequency
synthesizer
by FREQUENCY STEP mode in 25kHz steps
by AUTOTUNING mode in 50kHz steps
Tuning accuracy: +0.002%
Monophonic usable sensitivity: 1.2uV 12.8dBf
Quieting sensitivity MONO: 1.6uV 15.20Bf
STEREO: 19yV 36.8dBf
Signal to noise ratio MONO: 84d8
STEREO: 80d8
Total harmonic distortion (1kHz) MONO: 0.15%
STEREO: 0.3%
Capture ratio: 208
Selectivity adjacent channel (average): 1608
Selectivity alterate channel (average): 96dcB
Spurious response ratio Sf = 5.35 MHz: 110dB
Image rejection Af = 21.4 MHz: 110dB
IF rejection (10.7 MHz): 110d8
Subcarrier product rejection: 78d8
Frequency response 20Hz...15kH2: +0.3/-0.8dB
Stereo separation at tkHz: 430B
Muting threshold: 2.2uV / 18dBT
Stereo threshold: 5.5uv / 26d8f
Output level at output TAPE: 1.8V
Antenna impedance: 75Q
7.1.2 AM Tuner Section
a
Tuning
range:
535. ..1605kHz
Station tuning by means of a quartz referenced frequency
Synthesizer
by FREQUENCY STEP mode in 1kHz steps
by AUTOTUNING mode in 10kHz (3-4-3kHz) steps
Antenna inputs:
Three wire clamps with change over switch
a) to utilize
the coaxial
input via internal
frequency
deviding network FM/AM
b) to connect conventional aerial antenna of any Length
Plus ground
Cc) to connect the REVOX Loop antenna
7.1.3 Amplifier Section
Power output min.RMS, at 40: 90 W/channel
min.RMS, at 8Q: 70 W/channel
(both channels driven from 20Hz...20kHz with total har-
monic distortion < 0.03%)
Total harmonic distortion: 70 Wat 8 Q, at 1kHz 0.005%
Dynamic headroom at 40: 3dB
at 8Q: 2.508
Rise time at 40: 5us
at 8Q: 4us
Damping factor at 8Q/1kHz: 100
Inputs sensitivity / impedance (for 90 Ww / 4Q)
DISC: 250mV...5V /47kQ, nominally SOOmv
TAPE1/TAPE2: 250mV...5V /47kQ, nominally 500mv
PHONO MM: 2.7mV...50mV/47kQ, 50,150,450pF,
nominally SmvV
Option: PHONO MC: VOOpV...2mv /100Q nominally S500uV
Max. input voltage: High Level inputs: 8v
PHONO MM: Vkiz, 150mv
PHONO MC (Option): TVkiz, émv
Outputs Level / impedance Cat nominal input voltage)
TAPE1/TAPE2: at 6800 500mv
from input PHONO MM: 250mv
PHONES: at 2700 8V
SPEAKERS A/B: at 40 2x110W
Tone controls, parametrically
Range +4 steps BASS: at 40 Hz +1208, . .-12dB
TREBLE: at 15kHz +10dB. . .-100B
SUBSONIC filter (assignable to PHONO):12dB/octave 15H -3dB
Signal-to-noise ratio:
High Level inputs: refered to 500mV power input,
at 90W / 4Q, 1kQ termination 96dB
at 50mw, 1kQ termination 76d8
PHONO MM: refered to 5mV power input,
at 9OW / 40, 1kQ termination 80d8
at 50mW, 1kQ termination 7608
PHONO MC (Option): refered to 500uV power input,
at 90W / 4Q, 10 termination 7608
at 5OmwW, 1Q termination 760B
Crosstalk between inputs: at 1kHz 9008
Channel separation High Level inputs: at 1kHz 7508
PHONO: at 1kHz 60dB
Frequency response: 20Hz.. .20kHz +0i8/ ~0.3dB
PHONO RIAA equalization: (4-time constants) +0.3d8
7.1.4 General
a
Multifunctional LC Display
Station memory:
programmable with
24 junctions
29 memory loc ations
- frequency
- station abbreviation
- reception modes
SERIAL LINK:
Terminal for REVOX remote control system
Dimensions: WxHxD 18x63 inches
Weight: approx, 33 lbs.
Power supply: 115V & / 60Hz
Power consumption: tax - 550W
Environmental operating humidity: classeF (DIN)
temperature: 40, .104°F
i
We reserve the right to make alt ations
as technical progress may warran