GF-600
3 ADJUSTMENT
AND
CHECKS
●
0 dB is referenced to 1.0V.
●
Load
impedance:
SPEAKERS: 6 ohm (40W or more)
PHONES: 1k ohm (1/4W)
●
Specified input level: -3dB (AUX)
●
VOLUME position: VOL 20
●
Unless specified otherwise,measurements are made in PHONES jack
3.1
AMPLIFIER SECTION
ITEM
INPUT SIGNAL
(AUX IN)
SPECIFICATIONS
REMARKS
1.AUX input sensitivity
1KHz /-3dB
-4 +/-3dB Reference output level
2.Harmonic distortion
1KHz /-3dB
1.0% or less
3.Frequency response
40Hz,100Hz,20kHz
40Hz: 9 +/-3dB
100Hz: 7 +/-3dB
20kHz: 3 +/-3dB
Reference level:1kHz
4.S/N ratio
No signal
50dB or better
Ratio of reference output
level to noise
5.Maximum output power
1KHz
THD:10% or less VOLUME: MAX
4
Oscillator
AUX IN
L
R
GF-600
PHONES
SPEAKERS
6 ohm
1k ohm
1k ohm
S1
Distorion Analyzer
AC voltmeter
Oscilloscop
e
Fig.3-1 Basic test setup
6 ohm
