Adcom GTP-740, Service Manual

Page: 57 / 58

73
TECHNICAL SPECIFICATION GTP-740
Input mode: L=R
input level=2V
300Hz dB C 0±0.8
20kHz dB C 0±0.8
Input mode: L=-R
input level=2V
30Hz dB SL, SR -1.0±1.0
3. THD
Input voltage 2.0V
w/ 80kHz LPF
1kHz %
≤
0.08
4. S/N ratio
Input level=2.0V, (A-WTD w/1k termination)
Input mode: L, R
1kHz dB L, R
≥
70
Input mode: L=R 1kHz dB C
≥
70
Input mode: L=-R 1kHz dB SL, SR
≥
70
ROOM2 FUNCTION
Surround mode: 2 channels (FL & FR channels)
Input source: Analog input (audio analyser) - CD input
Room2 level: -10 unless specified
Input level: 2.0V
Specification Details Freq. Unit Limit
1. THD+N
Adjust the input level, @5.0Vrms output
w/ 80kHz LPF
1kHz %
≤
0.08
2. S/N ratio
A-wtd w/ 1K termination
1kHz dB
≥
80
3. Sensitivity
Input level=1V
1kHz V 5.4±0.5
4. Output level
Adjust the input level, THD=0.1%
1kHz V
≥
5.5
5. Channel difference 1kHz dB 0±1.0
6. Frequency response
Input=2V, 1kHz ref.
20Hz dB 0±0.5
20kHz dB 0±0.5