Audio Database

The

ROTEL RA-611
49,500yen(around the 1973 time)

Description
 
The Integrated Amplifier which investigated cost performance maintaining the outstanding property and tone quality.

The whole page hardwired-connection OCL power amplifier of 2 power-source schemes is adopted.

The stabilizing supply is carried in the equalizer and the preamplifier circuitry.

A pre and power are separable.


Rating of a mode
Form Integrated Amplifier
<Power amplifier part>
Music power 140W (4ohm)
80W (8ohm)
Effective output 37W/37W (4ohm)
30W/30W (8ohm)
THD 0.1% (at the time of 27W output 8ohm)
Cross modulation distortion (70Hz:7kHz=4:1) 0.15% (at the time of 1W output 8ohm)
0.2% (at the time of 28W output)
Frequency characteristic 5Hz - -100kHz three dB
Output band property (IHF) 5Hz - 55kHz
Dumping factor 35 (8ohm)
Input sensitivity/impedance 0.8V/33kohm
<Preamplifier part>
Output voltage 800mV
THD 0.15%
Frequency characteristic 5Hz - 75kHz
S/N ratio Phono1, 2:65dB
Aux, Tape in: 70dB
Remains noise 1mV
Input sensitivity/impedance Phono1, 2:2.5mV/47kohm
Tuner, Aux1, 2:150mV / 40kohm
Tape in: 230mV / 47kohm
Equalizer RIAA deflection +17dB (50Hz) -13.5 dB (10kHz)
Loudness control + 10dB (50Hz), +4dB (10kHz)
A high filter 10kHz-10dB
A low filter 50Hz-10dB
Muting -20dB
Tone control Bass: ±10dB (50Hz)
Treble: ±10dB (10kHz)
<Synthesis>
The semiconductor used Transistor: 26 pieces
Diode: Four pieces
Power source AC100V/120V/220V/240V, 50Hz/60Hz
Power consumption 150VA
Dimensions Width 420x height 140x depth of 240mm
Weight 7kg