LUXKIT A250
¥ 36,500 (Released in September 1972)
¥ 42,200 (around 1974)
Commentary
A stereo power amplifier kit using transistors.
All stages are directly connected pure complimentary service OCL circuit.
The A250 consists of a two stage differential amplifier, an OCL circuit with a two power supply system, and PNP and NPN power transistors with uniform characteristics at the output stage.
In this circuit system, all stages are connected in DC, so it is difficult to find the cause of trouble in case of trouble, and there is a disadvantage in making it into a kit. This is made possible in Luxman by introducing a unique checking mechanism along with selecting parts.
With the attached switch and meter, you can adjust the current of each channel when there is no signal and the 0 potential of the output stage.
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Model Rating
| Type | Tuner kit | ||||||
| Effective power | 30W + 30W (8 Ω, both channel operation) 35W/35W (8 Ω, single-channel operation) |
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| Cross modulation distortion factor | 0.1% or Less (8 Ω, 30W, 70 hz : 7 khz = 4 : 1) | ||||||
| Total harmonic distortion factor | 0.1% or Less (8 Ω, 30W) | ||||||
| Output bandwidth | 5 Hz to 50 kHz -3dB (0.5%) | ||||||
| Frequency characteristic | 10 Hz to 50 kHz - within 1 dB | ||||||
| Input sensitivity | Standard : 860 mv Maximum : 430 mv |
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| Input impedance | 50k Ω (at maximum input sensitivity) | ||||||
| Residual noise | 0.7 mv or Less (Input Short) | ||||||
| Damping factor | 30 (8 Ω) | ||||||
| Attachment | Input sensitivity selector switch Speaker jacks (2 systems) Check switch Meter Headphone jack |
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| Semiconductor used |
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| Power consumption | 120W (8 Ω at maximum output) | ||||||
| External dimensions | Width 400x Height 130x Depth 245 mm | ||||||
| Weight | 6.2kg | ||||||
| Sold Separately | Assembly Manual (¥ 500) |
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