Audio
Research Dual-100 Features:
Exclusive
New Circuitry (Patented and Patent Pending)
Quality
Construction
1/8"
anodized aluminum chassis;
Silicon
power supply;
Choke
filtering;
Heavy duty
epoxy-glass circuit board;
Conservative
design;
Many
precision parts;
Extra
quality components;
Thermistor
controlled warmup.
Conservative
Specifications
Unique
Guarantee (Investment protected; 5 years, part and workmanship; 2 years, vacuum
tubes/home use; registered warranty transferable)
Ultra Stable
Performance: Ideally suited for complex loads such as electrostatic speakers
(may be operated into open circuit or any combination of reactive and/or
resistive load)
Unique Circuitry - Delivers superior
performance under dynamics of music
Overload Stability - and lack of crossover
distortion provides clean effective loudness of much larger amplifier.
In the
evolvement of the Dual 100 design, foremost consideration has been placed on
listening quality. Needless to say, there was no place for the "but we've
always done it this way" philosophy in its design. Certain well-known
principles (but seldom used) are obviously
retained, such as quality of construction, an an adequate power supply.
From a circuit standpoint, however, little of it resembles convention.
One patent has been issued, another is
pending, and even beyond thgis, the circuitry is unique. Interestingly enough,
it is also very straight-forward and remarkably long-term stable.
The output stage is one of these unique
circuits, and needless to say, it does main fixed regardless of amplitude or
complexity of signal.
Specifications:
Frequency
Response:
30 Hz to 15
kHz at 1 watt ±1 dB
30 Hz to 15
kHz at 75 watts ±1 dB
Sine Wave
Power: at least 75 watts RMS 30 Hz to 15
kHz
Harmonic
Distortion: less than 0,15% at 1 kHz at
75 watts
Hum and
Noise: at least 80 dB below rated output
Input
Sensitivity: 1,0 V RMS for rated output
Impulse
Distortion: essentially none 30 Hz to 15
kHz
Permissible
Loads: Open circuit, resistive,
capactive, inductive, or any combination, series or parallel
Output
Impedance: 4, 8, 16 ohms
Load
Regulation: from 16 Ω resistive load to
open circuit less than 1 dB change 1 kHz
Dimensions (whd):
Power Supply
: 17" x 13" x 10-1/2"
Amplifier
: 17" x 13" x 8"
Weight
Power Supply
: 88 lbs
Amplifier
: 45 lbs
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