Grundig R 45 a Bedienungsanleitung Seite 15

FM Limiting:
Limiting Point (—1/—3 dB) < 0.95/0.7 nV in 300 2
Bandwidth:
FM-IF, 140 kHz (approx.)
AM-IF, 4.5 kHz (approx.}
FM quadrature demodulator, 800 kHz
IF Noise:
FM: 2 100 dB
AM: = 60dB
AM Suppression
> 60 dB at 1 kHz (measured with 22.5 kHz)
deviation and 30% modulation at 1 mV in 300 Q.
image Rejection:
FM: 2 87dB
MW: 50 - 60 dB
AFC Accuracy (VHF/FM):
Switchable, capture accuracy + 300 kHz
Capture Ratio:
< 1 dB for —30 dB noise at 1 mV in 300 2 and
40 kHz deviation.
FM Signal to Noise Ratio (Unweighted):
To DIN 45 405 in the range 31.5 Hz... 15 kHz
measured with 40 kHz deviation at 50 W
output:
Mono/Stereo: = 70/62 dB
Mono/Stereo: = 63/60 dB at 50 mW output
FM Signal to Noise Ratio (Weighted):
To DIN 45 405 in the range 31.5... 15 kHz at
40 kHz deviation at 50 Watts
output:
Mono/Stereo: > 69/58 dB,
at 50 mW output:
Mono/Stereo: = 63/56 dB
Frequency Response (VHF/FM):
Better than DIN 45 500 from aerial input to
loudspeaker output:
40-6300Hz < +1 dB
6.3-15 kHz < + 15dB
Stereo Pilot Leakage:
= 70 dB at 19 kHz
2 70 dB at 38 kHz
Distortion:
Mono/Stereo: < 0.4/0.3% at 1 kHz and 40 kHz
deviation (to DIN 45 500)
Stereo Decoder:
Integrated circuit PLL decoder with automatic
indicator and RF level Mono/Stereo switching.
(Level set for 10 pV in 300 9).
Stereo Crosstalk
1 mV at aerial and 47.5 kHz deviation:
1 kHz — = 40 dB
250 - 6300 Hz — = 32 dB
6.3 - 10 kHz — = 30 dB
Measured at selected points.
Safety Circuits:
To all European norms and {EC Regulations, etc.
De-emphasis:
50 p/secs to standard
Audio Amplifier Section
Output Power:
measured to DIN 45 500 in 4Q.
Loudspeaker group | or !I
140 W music power =2x70W
100 W nominal power = 2x50 W
Loudspeaker groups | plus I}
240 W music power = 4x60W
60 W nominal power = 4x 15 W
Distortion Factor:
S 0,1% at 20. . . 20000 Hz and 2 x 45 W Sinus,
< 0.05% at 1 kHz and nominal power
Frequency Response:
Tape (TB): 20... 20000 Hz + 1dB
PU Magnetic: 40 - 20 000 Hz + 1.5 dB
Power Bandwidth:
<5... > 100 000 Hz at 1% distortion
Intermodulation:
< 0.15% at full output, measured at 250 Hz and
8000 Hz with a ratio of 4: 1 (to DIN 45 403)
Signal to Noise Ratio:
{to DIN 45 405) for 50 W/50 mW
TA-magn.: > 67/63 dB
TB 1/TB 2: = 88/65 dB
Monitor: > 88/65 dB
Micro: = 60/60 dB
Stereo Crosstalk L-R:
= 40 dB in the range 20.. . 20 000 Hz
= 60 dB at 1 kHz
Crosstalk between Programme /
Monitor or Programme / Programme
> 70 dB in the range 20. . . 20000 Hz
= 80 dB at 1 kHz
Input Sensitivities and Impedance:
for 50 Watts output:
TB 1/TB 2: 185 mV/470 kQ
TA-magn.: 1.65 mV/47 kQ
Monitor: 165 mV/470 k&
Micro: 0.5 mV/100 kQ
The TA input is frequency corrected to RIAA at
3180-318 and 75 p/secs
Input Overload Point:
TA Magnetic: 50 mV
TA Crystal and TB: 5.5 V
Monitor: 5.5 V
Micro: > 2V
Pin Connections of Microphone Socket
Capacitor and dynamic microphones:
pins 1 - 2 left-hand channel -
pins 4 - 2 right-hand channel
Balanced line studio microphones:
pins 1 - 3 left-hand channel
pins 4 - 5 right-hand channel
Volume Control Accuracy:
The accuracy of the volume control setting, per
channel is 2 dB in the frequency range of
20 - 20 000 Hz. With the loudness circuit in
operation this figure might be slightly degraded.
Effective Range of Tone Controls
measured against Linear position.
Bass control: +16.5 dB/ —17 dB at 40 Hz
Treble control: +15 dB / —17 dB at 16 kHz
Tone selector: +15 dB / —15 dB at 160 Hz, 400 Hz,
1 kHz, 2.5 kHz and 6.3 KHz
Stereo Balance: (Left and Right)
Setting range: +2.8/—11 dB
Noise Filter:
Roll off, —3 dB at 6.8 kHz.
Slope steepness > 35 dB/octave
Output Facilities:
a) 4 loudspeakers to DIN 41 529 (Impedance 4 &.
Minimum impedance 3.2 Q) for stereo in two
separate rooms. It is permissible to connect
loudspeakers with an impedance of up to 16 2
provided that the associated loss in output
power can be tolerated. The amplifier is
fitted with an automatic short circuit protection
device which comes into operation when the
output load falls below 1.5 Q.
b) 2 sockets to DIN 45 327 for connecting 2 sets
of stereo headphones. Output impedance in the
range 5 to 2000 2.
c) Line output: 410 mV in 47 kQ for 500 mV on
Tape input. 460 mV in 47 kQ for 5 mV on
Phone input. Ri = 5.6 kQ. Short-circuit proof. For
connecting tape recorders, amplifiers or mixer
units with corresponding input socket.
Damping Factor:
The internal impedance of the amplifier is 0.12 kQ
and when connected to a 4 Q load this will give
a damping factor of 30 dB. This damping factor is
improved when using loudspeakers of a higher
impedance.
Alterations reserved!
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