The
Beomaster 1900 Receiver
The dramatic
center of the Beosystem 1900 is the Beomaster 1900 receiver. Its operation
borders on magical, its performance is without audible flaw,,its aesthetics are
beyond reproach. It is a component which has truly domesticated high fidelity.
All major
functions of the 1900 receiver are controlled by touch-sensitive electronic
switches: the sculpted depressions aligned along the top panel. They are
volume, input selection, selection of up to five user pre-set FM stations, and
standby. These controls function electronically, completely eliminating
mechanical linkages which can wear out or become misaligned (estimated to cause
approximately 80% of service problems).
When any of
the electronic controls are touched, a lighted indicator immediately appears
directly above. You always know the operational status of the 1900, even from
across the room.
The 1900
also allows you to pre-set up to five FM stations for instant, electronically
accurate recall. Four separate tuning indicators and the main random tuning
dial are located under the aluminum lid. By tuning the four indicators to those
stations you listen to most frequently, they may be recalled by simply touching
their respective control on the front panel. The main tuning dial can also be
set at a preferred station and this station immediately recalled by a control
on the front panel. Random tuning is accomplished by a flush-set tuning control
moved effortlessly by a single finger. Also, positioned under the aluminum
cover is the AFC which, when in effect, eliminates drift from the stations you
select.
Also found
under the aluminum lid are the controls for adjusting bass, treble, and balance
between your speakers. These controls are smooth sliding potentiometers. Easily
viewed, illuminated indicators are used to show visually the extent to which
the controls have been moved from their neutral position.
The
Beomaster 1900 receiver has a split power supply which provides optimum
performance throughout the frequency range. All output transistors are usd
conservatively and an electronic protection circuit automatically respondes to
any overload, breaking the circuit and preventing any damage from occuring to
receiver or speakers. The tuner section of the 1900 utilizes FETs for high
sensitivity and selectivity,PLL circuitry is used to guarantee excellent
channel separation and greater long term circuit stability. Ceramic filters and
integrated circuits in the IF amplifier and stereo decoder provide excellent
separation and low harmonic distortion.
Specifications
Amplifier
Section
Power Output
(1000 Hz RMS): 2 x 30 W at 4 Ω; 2 x 20 W
at 8 Ω
Music Power
: 2 x 50 W at 4 Ω ; 2 x 30 W at 8 Ω
Speaker
Impedance: 4 Ω
Harmonic
Distortion:
1000 Hz,
50 mW :
less than 0,07%
DIN 45 500,
40 - 12,500 Hz : less than 0,13%
Intermodulation
DIN 45 500 : less than 0,15%
Frequency
Range (±1,5 dB DIN 45 500): 20 - 40,000
Hz
Power
Bandwidth (1% distortion): 10 - 40,000
Hz
Damping
Factor (1000 Hz): better than 70
Input
Sensitivity/Impedance:
Pick-up: 3 mV/47 k Ω
Tape: 220 mV/ 470 k Ω
Signal-to-Noise
Ratio (DIN 45 500):
Pick-up (50
mW) : better than 60 dB
Tape
recorder (50 mW): better than 65 dB
Channel
Separation
1000 Hz (DIN
45 500): better than 56 dB
250 - 10,000
Hz : better than 38 dB
Output
Level:
Tape
Recorder (1000 Hz DIN 45 500): 100
mV/100 k Ω
Headphones
: max, 6 V/200 Ω
Bass Control
at 40 Hz : ±18 dB
Treble
Control at 12,500 Hz : ±15 dB
Tuner
Section
FM
Range: 87,5 - 108 MHz
Sensitivty
[stereo 46 dB]: less than 30 µV/75 Ω
Signal-to-Noise
Ratio [stereo, weighted]: better than 60 dB
Frequency
Range (DIN 45 500, ±1,5 dB): 20 - 15,000
Hz
Harmonic
Distortion (DIN 45 500): less than 0,4%
Stereo
Channel Separation (1000 Hz): better
than 35 dB
Pilot
Suppresion
At 19
kHz: better than 45 dB
At 38 kHz
: better than 50 dB
General
Section
Power
Supply: 110 - 130 - 220 - 240 V; 50/60
Hz
Power
Consumption: 25 - 185 W
Dimensions
(W x H x D): 620 x 60 x 250 mm
Weight: 7,6 kg
No comments:
Post a Comment