Luxkit/Luxman a809 MC head amplifier

Meget god, nye film kondensatorer fra Wima og Panasonic fc . Konstruert av Luxman .

DC amplifier configuration is used.

A duo-beta circuit is used for the head amplifier circuit, and high sound quality is achieved by combining an appropriate NFB for the middle and high sound range and a DC servo for tightening the low frequency range.

The A809 also has a duo-beta circuit equalizer, which can be directly connected to a volumetric power amplifier.

It can also be used as a microphone amplifier.

In this case, it is necessary to raise the input impedance by remodeling, and the gate resistance of the first stage FET should be changed from 100 Ω to 47k Ω.

However, in this case, oscillation may occur depending on the wiring, and noise may be slightly deteriorated.

Type MC head amplifier kit

Head Amplifier Section

Amplification factor 20 dB (30 dB with wiring change)

Total harmonic distortion factor 0.005% (20 Hz to 20 kHz, 1 V Output)

Frequency characteristic 5 Hz to 500 kHz -0.5 dB

Input reduced noise -145dBV (IHF-A, input short)

Input impedance 10 Ω, 50 Ω, 100 Ω

Equalizer Section

Rated output 150mV

Input sensitivity 2mV

Total harmonic distortion factor 0.005% (20 Hz to 20 kHz, 2 V Output)

Frequency characteristic 20 Hz to 20 kHz ± 0.5 dB

Signal-to-noise ratio 75 dB (IHF-A, input short)

Input impedance 50k Ω

Channel separation 70dB

External dimensions Width 290x Height 76x Depth 142 mm

Weight 1.8kg