Luxman LV-100
The Luxman LV-100 is a mid-range integrated stereo amplifier from the infamous period of Luxman's production.
The output stage uses the STK2240 power module, driven by the STK3042III voltage amplifier. The power supply features two 6800µF filter capacitors, and speaker protection is handled by a relay.
The front panel is made of brushed aluminum and looks decent. The overall design feels somewhat cheap, but at least the entire chassis is made of metal.
Like many other amplifiers based on STK modules, the LV-100 does not deliver particularly impressive sonic performance.
Manufacturer: Luxman
Status: Active company
Official website: luxman.com
General Specifications
Maximum power (8Ω): 40WFrequency response (+1,-3dB): 10Hz-80kHz
THD (1kHz): 0.008%
Signal to noise ratio (Line): 96dB
Signal to noise ratio (MM): 88dB
Input sensitivity (Line): 150mV
Input sensitivity (MM): 2.5mV
Speaker load impedance: 8Ω-16Ω
Dimensions (WHD): 438×110×278mm
Weight: 7.2kg
Produced: 1986-1987
Initial price: $400
Measured Values
Maximum power (8Ω): 49.7WFrequency response (20Hz-20kHz): <0.4dB
Channel imbalance: <1.5dB
THD (1kHz, 1W): 0.14%
THD+N (1kHz, 1W): 0.14%
Noise: -65.7dB
Amplification: 155.4
DC offset L: 9.5mV
DC offset R: 11.1mV
Factory Specification Sheet
Factory specification images are sourced directly from the device's original service manual or user manual. These documents are produced by the manufacturer and provide authoritative information on the product's specifications.
Maximum Power
Maximum power is measured using 8Ω resistors on both channels. A 1kHz sine wave input signal is applied and gradually increased until higher harmonics rise significantly. Typically, this is the point at which output clipping occurs.
Frequency Response
Frequency response is measured using several equilizer settings. 'Flat' indicates the tone controls are either turned off or set to their neutral position. 'Max' and 'Min' refer to the maximum and minimum tone control positions, respectively. In the phono section, the expected response follows the RIAA equalization curve.
Residual Noise
These graphs display the noise levels at various volume positions. To eliminate any interference from the input signal, the input lines are shorted during the measurement. Generally, the noise is highest at the mid-point of the volume range (50%)
Distorsion
Total harmonic distortion (THD) is measured using a 1kHz sine wave input, with the output level adjusted to meet different conditions. Intermodulation distortion (IMD) is measured using 'two sine' input signal. THD versus voltage is measured with a 1kHz sine wave input, while THD versus frequency is measured at various output levels.
