Luxman Luxkit A-3600+A-3300 toruvõimendi komplekt

Kvaliteetne komplekt suurepärases seisukorras. Täiesti töökorras. Jaapani versioon 100 volti. Kaasas astmeline trafo. Hooldus tehtud.

Commentary(A-3600)

Stereo power amplifier kit using 3-pole output tube 8045G for large output same as A3000.

All amplifier stages are designed with emphasis on bare characteristics, and excellent distortion factor characteristics are realized by multiplying major NF by 16 dB.

The 8045G was developed jointly by LAX and Shin-NEC in preparation for the high-power era. The plate electrode employs a five layer bonded metal plate with high heat radiation effect and an electrode structure with heat radiation fins, resulting in a plate loss of 45W.
The output transformer uses the newly developed OY15-3.6K-HP for the A3600. This transformer has the same appearance as the conventional OY15 type, but the handling capacity is increased to 50W for high power specifications. In addition, it reduces insertion loss and improves high-frequency characteristics.

The driver circuit employs a cathode-coupled phase-reversal circuit called the orthodox Mulard type, which provides high stability because of its large output voltage and large gain.
This circuit also uses 6240G developed for high-voltage drives. This ball is a twin triode with low internal resistance and Nakamashi width-ratio, and has high plate loss. It has excellent conditions as a driver tube for a high-power amplifier. In order to balance the gain of the upper and lower driver tubes, the A3600 has an appropriate difference in plate resistance. This circuit also has excellent conditions as a driver tube for a high-power amplifier.

6AQ8 with low internal resistance and high amplification factor is adopted in the first stage. By keeping the impedance of the plate circuit sufficiently low, deterioration of high-frequency characteristics is prevented, and the phase correction circuit which deteriorates the distortion factor in high-frequency characteristics is eliminated, and excellent high-frequency distortion factor characteristics are obtained.

Model Rating

TypeBulb type stereo power amplifier kit

Continuous effective output50W + 50W (4 ω, 8 ω, 16 ω)

Total harmonic distortion factor0.5% or Less (50W, 1 kHz)
1% or Less (50W, 55 Hz to 10 kHz)

Frequency characteristic10 Hz to 40 kHz - within 1 dB

Input sensitivityAbout 850 mv

Input impedance80k Ω

Damping factor14 (8 Ω, 1 kHz)

Residual noise0.5 mV or less

Vacuum tube used8045G : 4 pieces
6240G : 2 pieces
6AQ8 : 1

Power consumption300W
400W (at rated output)

External dimensionsWidth 465x Height 168x Depth 206 mm

Weight17.0kg

Commentary(A-3300)

This tube type preamplifier kit was announced simultaneously with the launch of the LUX KIT brand.

The equalizer circuit is similar to the circuit used in the C-22 Macintosh, and consists of a combination of a P-K / NF circuit (feedback from the second stage plate to the first stage cathode) and a cathode follower circuit.

An orthodox circuit is used to adjust sound quality.
The low-cut filter is CR1-stage type, the high-cut filter is NF-type, and the tone control is Lux-type NF-type with less waviness at the mid-point. The tone control can be adjusted more precisely because the bending point frequency can be switched.

Equipped with an attenuator that can attenuate the gain by 20 dB.

It is equipped with a pure complimentary service type headphone amplifier composed of 4 transistors.
This circuit automatically switches the output of the pre-section to the headphone amplifier when the headphone is inserted.

A3300 does not have a built-in power supply.
For this reason, a special power supply or a power amplifier such as A3500/A2500 is required.

Model Rating

TypeTube type control amplifier kit

Output voltageRating : 2 V (Distortion Factor 0.08% or Less)
Maximum : 15 v (0.5% strain rate)

Output impedance950 Ω

Total harmonic distortion factor0.08% or Less (Output 2 v)

Frequency characteristic20 Hz to 20 kHz -0.5 dB

Input Sensitivity / Input Impedance
(at 1 V output)Phono1, 2 : 1.8mV/47k Ω
Aux1, 2, 3 : 130mV/150k Ω

Signal-to-noise ratioPhono1, 2 : 60 dB or more
Aux1, 2, 3 : 77 dB or more

Tone controlLUX System NF Type with Bending Point Switching
Low-range bending point : 250 Hz, 500 Hz
High-frequency curve point : 2.5 kHz, 5 kHz

FilterLow-cut : 70 Hz (-6dB/oct.)
High Cut : 6 kHz (-6dB/oct.)

AttachmentHeadphone amplifier (output 50 mw)
Tape monitor circuit

Vacuum tube used12AX7x4
12AU7x2

Semiconductor used2SC735x4
2SA562x4
KB265x2

Power supply partExternal power supply system
A33 power supply or A3500/A2500

External dimensionsWidth 400x Height 130x Depth 245 mm

Weight3.5kg