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| ROTEL RA-1210 |
|
| 73,000yen(around the 1970 in-the-early time) |
The Integrated Amplifier which adopted as the
main-amplifier part 2 power-source schemes (the transformer, capacitor which
became independent to the right-and-left channel) of the perfect discrete type.
The whole page hardwired-connection OCL semi- complimentary which uses
one step of differential amplification for a main-amplifier circuitry is
adopted.
Since there is also no output capacitor, the high output of little
stability distorted from low-pass to a high region is obtained.
The
three-step hardwired-connection E-E feedback of only a PNP type transistor is
adopted.
A speaker will be damaged, if a pop noise comes out and the
noise of pulse nature enters, since supply voltage is not a steady state from
the power activation time for 5 to 6 seconds.
In order to cope with this,
there is a delay circuit, and also a fuse is respectively put into a power
circuit, and the circuit breaker is put into the speaker circuitry.
If it
carries out for a while even if it operates at the time of an overload, since a
circuit breaker is an auto return, it will return.
|
| Form |
Solid-state stereo amplifier
|
| <Main-amplifier part>
|
| Music power (IHF) |
4ohm: 230W
8ohm: 160W |
| Effective output (RMS) |
4ohm: 80W+80W
8ohm: 60W+60W
|
| THD |
Output power: 0.5%
55W output: 0.1%
(20Hz - 20000Hz) |
| Cross modulation distortion |
55W output: 0.1% |
| Frequency characteristic |
3Hz - 100,000Hz, and +0 -3 dB
|
| Output band property |
5Hz - 50,000Hz |
| Dumping factor |
35 (8ohm) |
| Input sensitivity/impedance |
1V/30kohm |
| Speaker impedance |
4ohm-16ohm |
| <Preamplifier part>
|
| Output voltage |
1V-3V |
| THD |
0.1% |
| Frequency characteristic |
3Hz - 50,000Hz, and +0 -3 dB
|
| S/N ratio |
Phono1, 2:70dB
AUX1, 2, Tape In: 80dB
|
| Remains noise |
0.5mV |
| Input sensitivity/impedance |
Phono1:1mV/100kohm
Phono2:1, 2, 4mV/30,
50, 100kohm
Tuner, AUX1, 2, Tape In:180mV /, 45kohm
Tape DIN: 330mV /
100kohm |
| Equalizer |
Deflection of less than ±0.5dB from a RIAA
standard curve |
| Loudness |
50Hz:+6dB
10kHz:+2dB |
| A high filter |
10kHz:-10dB |
| A low filter |
50Hz:-10dB |
| Muting |
10kHz:-20dB |
| Bass |
50Hz : ±10dB |
| Treble |
10kHz : ±10dB |
| <Synthesis>
|
| Supply voltage |
100V, 117V, 220V, 240V, 50Hz/60Hz
|
| Power consumption |
150W |
| Dimensions |
Width 420x height 140x depth of 304mm
|
| Weight |
13.7kg |
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