LUXKIT A2110
¥ 88,000 (released in October 1977)
Commentary
Stereo power amplifier kit with DC amplifier configuration.
It is based on the LUXMAN Laboratory Reference Series Stereo Power Amplifier 5M21.
In order to suppress DC drift due to changes in external conditions such as temperature, which is a defect of DC amplifier, we have adopted DML-IC which integrates dual FET for first stage differential amplifier and auxiliary circuit to improve reliability.
The power supply is equipped with two newly developed thin toroidal transformers and four newly developed high-capacity capacitors (10,000 μ F) with improved sound quality. This eliminates interference between the left and right channels and provides a stable power supply to each amplifier circuit.
We also use carefully selected parts such as resistors, semi-fixed resistors, capacitors, etc.
In order to maximize the performance of the DC amplifier, we use a printed circuit board as much as possible, separate boards for the left and right channels, and separate relays for muting circuits and speaker terminals for the left and right channels to improve crosstalk characteristics.
By eliminating functions such as speaker switches, sound quality degradation due to excess contact passage is suppressed.
Equipped with peak indicators
This indicator consists of two LEDs indicating 0 dB and -6dB, and an indicator sensitivity switch.
The input level set uses a new volume with improved sound quality that provides highly accurate attenuation characteristics.
Model Rating
| Type | Stereo power amplifier kit |
| Continuous effective output | 55W + 55W (8 Ω, both channel drive, 20 hz to 20 khz) |
| Total harmonic distortion factor | 0.01% or Less (8 Ω, 55W, 20 hz to 20 khz) |
| Cross modulation distortion factor | 0.01% or Less (8 Ω, 55W, 60 hz : 7 khz = 4 : 1) |
| Output bandwidth | 5 Hz to 100 kHz (8 Ω, 0.1% distortion rate, -3dB) |
| Frequency characteristic | DC ~ 100 kHz -1dB or less |
| Input sensitivity | 800mV |
| Input impedance | 50k Ω |
| Signal-to-noise ratio | 110 dB or more (IHF-A curve correction, input short circuit) |
| Residual noise | 0.2 mV or less |
| Crosstalk | -70dB or less |
| Damping factor | 80 or More (8 Ω, 1 kHz) |
| Protection circuit | Speaker protection circuit with DC drift detection Overcurrent protection circuit |
| Accessory function | Peak Indicator (0 db & -6dB Display) Indicator Sensitivity Switching (0 db, -6dB, -12dB, -18dB) Left-right independent input level set Input capacitor in/out switching |
| External dimensions | Width 438x Height 78x Depth 363 mm |
| Weight | 10.2kg |
.jpg)
.jpg)