ขาย Pre Amp Luxman รุ่น CL350 สภาพสวย คลาสสิค เสียงดี หายาก Made in Japan
ขาย Pre Amp Luxman รุ่น CL350 สภาพสวย คลาสสิค เสียงดี หายาก Made in Japan
เสปคเครื่อง และรีวิวร์จากต่างประเทศครับ...
LUXMAN CL350
¥ 79,000 (released in August 1972)
¥ 88,000 (year unknown)
Commentary
The first control amplifier using transistors.
The equalizer circuit is based on a 3-stage direct-coupled circuit that combines PNP and NPN types, and the third stage adopts a push-pull operation method that combines PNP and NPN
type transistors in a pair to increase the power supply utilization factor and ensure good linearity.
Low-level circuits, such as Phono and Mic, generally consist of a single equalizer amplifier,
which selects the input terminal by switching three points : the input circuit, the output circuit
and the equalization constant.
In CL350, each input terminal has its own amplifier and the input terminal is selected only on
the output circuit side. This simplifies the wiring of the input circuit side and reduces the
adverse effect of shield wires and shock noise at switching.
The tone control is an NF type LUX tone control, and the bending point frequency is a
3-step switching type for fine tone adjustment.
This circuit has a defeat switch and can be skipped if it is not used.
The high-cut and low-cut filters have two cut-off frequencies, so that noise can be attenuated
while minimizing the effect on the program source.
The noise level is kept low by mainly composed of PNP type ultra-low noise silicon
transistors which are easy to obtain a noise figure in general.
It has a built-in low frequency trimmer that adjusts the frequency band centered from 150 Hz
to 300 Hz in seconds.
This circuit is located behind the equalizer circuit to reduce the effect on the recorded output.
A headphone amplifier with level control is built-in.
The circuit consists of a pure complimentary service circuit directly connected to all stages, with
an output capacitor.
Equipped with an attenuator.
Phono1 terminal is equipped with impedance switching, and Phono2 is equipped with a socket
for MC-type step-up transformer.
The Aux1 and 3 jacks are equipped with level sets.
There were 2 types of exterior, Shiraki and Rosewood, similar to the power amplifier
M150.
Model Rating
Type Control amplifier
Frequency characteristic 10 Hz to 50 kHz -1dB
Total harmonic distortion factor 0.03% or Less (Output 1 V)
Output voltage Rating : 1 v
Maximum : 7 v (0.3% strain rate)
Output impedance Pre out : 100 Ω
Input sensitivity Phono1/2:2mV
Aux1/3 : 110 mV (Variable)
Aux2, Tape1/2 : 110 mv
Mic:2.3mV
Input impedance Phono1 : 100 Ω, 50 Ω, 30k Ω switching type
Phono2 : 50k Ω
Aux1/3 : 50k Ω
Aux2 : 100k Ω
Mic : 50k Ω
Tape1/2 : 130k Ω
Signal-to-noise ratio Phono : 63 dB or more
Aux, Tape : 80 dB or more
Mic : 59 dB or more
Input voltage resistance Phono : 300 mV or more
Equalizer RIAA : 30 Hz to 15 kHz ± 0.3 dB
Tone control LUX System NF Type with Bending Point Switching
Low-pass curve point : 150 Hz, 300 Hz, 600 Hz
High-frequency bending point : 1.5 kHz, 3 kHz, 6 kHz
Low-cut filter 25 Hz, 60 Hz
High-cut filter 7 kHz, 12 kHz
Low frequency trimmer ± 0.6 dB at 250 Hz
Attenuator -15dB
Headphone out 80mW
Attachment Tape monitor circuit
Tape dubbing circuit
Semiconductor used Silicon transistor : 49 units
Diode : 8 pcs
External dimensions Width 476x Height 182x Depth 244 mm
Weight 8.8kg
ได้รับการโหวต ความน่าเชื่อถือในการซื้อ-ขายสินค้า จากสมาชิกทั้งหมด 17 ท่าน
