Optonica
SM-105H
Straight DC
Stereo Integrated Amplifier with Fully Electronic Control System
This
perfectly "straight" amp is a result of Optonica's efforts to provide
a fully digital system based on a lead-less and contact-less design. A
combination of fully direct-coupled amplifier circuitry and fully electronic
controls for tone, volume and balance completely eliminated the use of lead
wires to improve frequency response. Conventional mechanical controls were
replaced with electronic circuitry to eliminate contacts.
Microcomputer-controlled circuitry splits up the signal to ensure more precise
tone control and offer a wider dynamic range, better Signal-to-Noise ratio,
lower distortion and greater durability.
A full
remote control system, unique graphic displays and an innovative sound memory
system were added to match the outstanding performance of this amp.
Specifications
Amplifier
Section
Music Output
Power:
2 x 77 W at
4 Ω (0,01% Total Harmonic Distortion; -22 dB Att)
2 x 60 W at
8 Ω (0,08% Total Harmonic Distortion; -22 dB Att)
Continuous
Output Power (RMS, both channel driven) At 1 kHz :
2 x 50 W (4
Ω, 0,01% T.H.D.; -22 dB Att)
2 x 40 W (8
Ω, 0,08% T.H.D.; -22 dB Att)
Continuous
Output Power (RMS, both channel driven) from 20 Hz to 20 kHz:
2 x 45 W (4
Ω, 0,05% T.H.D.; -22 dB Att)
2 x 37 W (8
Ω, 0,02% T.H.D.; -22 dB Att)
Total
Harmonic Distortion:
Rated Power
: 0,01% (-22 dB att)
Half Power
: 0,01% (-22 dB att)
Power
Pandwidth (IHF): 10 Hz - 35 kHz (0,1%
T.H.D.; -22 dB Att)
Frequency
Response
Phono: 40 Hz - 20 kHz (±0,3 dB) RIAA curve Deviation
Tuner, Aux,
Tape : 7 Hz - 100 kHz (+0 dB, -3 dB)
Damping
Factor (1 kHz, 4 Ω): 20
Signal-to-Noise
Ratio (IHF-A):
Phono: 78 dB
Aux : 95 dB
Phono
Overload Level (1 kHz): 130 mV RMS
Tone Control
Bass : ±8 dB at 100 Hz
Treble
: ±8 dB at 10 kHz
Audio
Mutting: ATT -50 dB (fixed)
Input
Sensitivity/Impedance:
Phono : 2,3 mV / 47 k Ω; 120 pF
Aux, Tuner,
Tape : 140 mV/10 k Ω
Output
Level/Impedance
Speakers
: A, B (4 - 16 Ω)
Headphones
: Low Impedance (4 - 16 Ω)
Tape
(Chinch) : 150 mV/220 Ω
Tape (DIN)
: 45 mV/ 80 k Ω
General
Section
Power
Source: 110/220/240 V, 50/60 Hz AC
Power
Consumption: 400 W (220V)
Dimensions
(W x H x D): 430 x 95 x 320 mm
Weight: 7,8 kg
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