Audio Database

The

ROTEL RA-311
27,500yen(around the 1973 time)

Description
 
The Integrated Amplifier which thought the functionality as important.

The ITL-OTL scheme is adopted.

4ch speaker matrix is built in.


Rating of a mode
Form Integrated Amplifier
<Power amplifier part>
Music power 60W (4ohm)
44W (8ohm)
Effective output 17W/17W (8ohm)
THD (1kHz) 0.3% (at the time of 15W output)
Cross modulation distortion (70Hz:7kHz=4:1) 0.4% (at the time of 15W output)
Output band property 20Hz - 80kHz
Dumping factor 30 (8ohm)
<Preamplifier part>
S/N Phono:60dB
Tuner, Aux: 70dB
Input sensitivity/impedance MAG: 2.7mV / 50kohm
Aux: 180mV / 100kohm
Tuner: 170mV / 100kohm
Tape in: 280mV / 15kohm
Loudness control +10dB(50Hz)
Tone control Bass: ±14dB (50Hz)
Treble: ±12dB (10kHz)
<Synthesis>
The semiconductor used Transistor: 24 pieces
Diode: Three pieces
Power source AC100V/120V/200V/240V, 50Hz/60Hz
Dimensions Width 350x height 110x depth of 255mm
Weight 4.7kg