Audio Database

The

ROTEL RA-315
26,900yen(around the 1970 in-the-early time)

Description
 
The Integrated Amplifier of the all transistor stream composition which adopted ITL and an OTL scheme.

ITL of a silicon transistor using and an OTL power circuitry are adopted.

The signal source indicator which can check the selected source is carried.

2 sets of speakers are connectable.

The tapes monitor switchpoint, the loudness control, and the tone control are carried.

The input terminal which can use 2 sets of phones, a magnetic cartridge and a ceramic cartridge, is carried.

The headphone jack is carried.


Rating of a mode
Form Integrated Amplifier
Music power (IHF) 60W (4ohm)
44W (8ohm)
Effective output 17W/17W (8ohm)
THD (1kHz) 0.3% (15W output)
0.2% (1W output)
Cross modulation distortion (70Hz:7kHz=4:1) 0.4% (15W output)
0.3% (1W output)
Frequency characteristic 15Hz-90kHz+0 -3 dB
Output band property (IHF) 20Hz - 80kHz
Dumping factor 30 (8ohm) or more
Rise time Aux: 4 microseconds (10kHz)
Overload Phono:50mV(1kHz)
S/N Phono: 60dB or more
Tuner, Aux: 70dB or more
Remains noise 2mV or less
Input sensitivity/impedance Mag: 2.7mV / 50kohm
Aux: 90mV/2Mohm
Tuner: 170mV / 100kohm
Aux: 180mV / 100kohm
T. in:280mV /, 15kohm
Tone control Bass: ±14dB (50Hz)
Treble: ±12dB (10kHz)
Loudness control +10dB(50Hz)
Speaker impedance 4ohm-16ohm
The semiconductor used Transistor: 24 pieces
Diode: Three pieces
Supply voltage AC100V/120V/200V/240V, 50Hz/60Hz
Power consumption 117VA
Dimensions Width 358x height 120x depth of 241mm
Weight 4.7kg