LUXMAN MQ830
¥ 23,000 (released in January 1970)
Commentary
This is a stereo power amplifier designed for multi-channel medium and high frequency applications.
The circuit is composed of all-silicon transistors, semi-output circuit is used, and the complimentary service stage is SEPP-OTL system.
An emitter-follower circuit is inserted in front of the six transistors that make up the power amplifier section.
This keeps the input impedance high and prevents the distortion factor from deteriorating.
The protective circuit is omitted by Luxman's original circuit method.
Input level set volume is mounted and input sensitivity can be adjusted.
Newly developed LUXMAN terminals are used for speaker terminals.
The front panel is made of an aluminum material with hairline processing, and finished with white gold alumite dyeing.
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Model Rating
| Type | Stereo power amplifier | ||||||
| Circuit system | Quasi complimentary service SEPP-OTL | ||||||
| Output | 20W/20W (4 Ω) 17W/17W (8 Ω) |
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| Total harmonic distortion factor | 0.5% or Less (17W, 8 Ω, 1 kHz) | ||||||
| Frequency characteristic | 20 Hz to 50 kHz -1dB | ||||||
| Input Sensitivity / Impedance | 500 mv (Maximum Output) / 40k Ω | ||||||
| Signal-to-noise ratio | 90 dB or more | ||||||
| Residual noise | 0.5 mV or less | ||||||
| Load impedance | 4 Ω ~ 16 Ω | ||||||
| Damping factor | 45 (8 Ω, 1 kHz) | ||||||
| Attachment | Input level set volume | ||||||
| Semiconductor used |
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| Pwer | 100 VAC, 50Hz/60Hz | ||||||
| Power consumption | 90W at maximum output | ||||||
| External dimensions | Width 115x Height 160x Depth 270 mm | ||||||
| Weight | 4kg |