ขายเครื่องเล่นแผ่นเสียง PIONEER XL-1550 สภาพสวย เสียงดี ราคาประหยัด Made in Japan
ขายเครื่องเล่นแผ่นเสียง PIONEER XL-1550 สภาพสวย เสียงดี ราคาประหยัด Made in Japan
เสปคเครื่อง และรีวิวร์ จากต่างประเทศครับ....
Pioneer XL-1550 ¥ 59,800 (around 1976)
Commentary
A record player with a quartz PLL.
Quartz PLL system is adopted for servo circuit.
In this system, pulses from a power generator mounted on the motor's rotating shaft are compared
with pulses from a crystal oscillator, and the phase difference is detected to maintain the motor
rotation speed.
In order to improve the reliability of the circuit itself, we have been making efforts to convert it
into an IC. Bipolar ICs are used for the drive circuit and MOS ICs are used for the control circuit.
Since the XL-1550 drive circuit operates in the forward and reverse directions, the motor
rotation speed is increased and the electric brake is applied in the reverse direction, enabling
quick response.
The strobe is equipped with a waveform shaping circuit. In this circuit, the strobe is turned on
after dividing the oscillation frequency (3 mhz band) of the crystal oscillator by a power circuit.
This circuit is not affected by the power supply frequency. In addition, by changing the
dividing ratio when changing the number of revolutions, adjustment with one stripe is possible.
In addition, the flash current is pulse-lit by a waveform shaping circuit so that the flash inscribed
on the turntable periphery can be clearly read.
The servo circuit has a built-in CR oscillator, and the PLL (phase control) works even when the
quartz is turned off, so that excellent load resistance and drift characteristics can be obtained
even during fine adjustment.
The drive motor uses a high-torque brushless DC servo hole motor with a diameter of 32.4 cm
and inertial mass of 340 kg ・ cm.2Rotate the large aluminum die-cast turntable at a constant
speed within 2/3 revolutions. The starting torque of this motor is 1kg-cm.
The switching mechanism uses three independently developed Hall elements to achieve high
S/N and durability.
S-shaped pipe arm is used for the tone arm.
In addition to reducing the effective mass, this arm uses a high-precision angular contact
bearing in the vertical and horizontal rotating parts to reduce friction and obtain high sensitivity.
In addition, a 6t aluminum panel is used for the arm mounting base, and steel plate
(thickness 6 mm, weight 700g) is reinforced from the inside of the cabinet to protect the tone
arm from howling during ultra-low frequency playback.
The head shell uses a non-resonant type made of aluminum alloy to reduce the weight.
The MM type PC 330 / II cartridge is used.
The cantilever of this cartridge is made of titanium pipe with special heat treatment, and since it
is light at 0.45 mg and has little deflection, mechanical impedance is kept low and tracing
capability is improved.
The cabinet uses a combination of particle boards.
Equipped with an arm height adjustment mechanism that can be adjusted at a height of
± 5 mm from the reference position.
Equipped with an anti-skating mechanism.
Butyl rubber is used for the turntable seat.
Uses an insulator that combines special rubber and die-cast solid.
The level of this insulator can be adjusted, and it can be changed by 0.5 mm per one rotation
of the insulator.
Model Rating
Type Quartz PLL Direct Drive Player
Motor Quartz PLL hole motor
Drive system Direct drive
Turntable 32.4 cm Diameter Aluminum Die Cast
Turntable inertia mass 340kg-cm2
Number of revolutions 33 1/3, 45 rpm
Speed change Electronic
Rotational speed fine adjustment range + / - 6 per cent
Uneven rotation 0.025% or less (WRMS)
S/N 62dB(JIS)
70dB(DIN-B)
Load variation 0% (Needle Pressure 120g or Less)
Start-up characteristic 2/3 turn or less
Rotational speed deviation Not more than 0.003%
Temperature drift 0.00004% / ℃ or less
Time drift 0.0003% / h or less
Tone Arm Section
Format Static balance S-shaped pipe arm
Effective arm length 221mm
Overhang 15.5mm
Applicable Cartridge Dead Weight 4g ~ 14.5g (Sub Weight Over 9.5g is used)
Height adjustment range + / - 5 mm
Cartridge Part>
Format MM Type (PC-330/II)
Structure Shield Case : Super Permalloy
Frame : Die Cast Aluminum Alloy
Needle tip 0.5 mil diamond
Effective mass of vibration system 0.45mg
Operating needle pressure range 1.0g ~ 1.8g (1.5g appropriate)
Frequency characteristic 10 Hz to 28 kHz ± 3 dB
Channel separation 25 dB or More (1 kHz)
20 dB or More (100 Hz to 10 kHz)
Output voltage 3 mv (1 khz, 50mm/sec, RMS)
Output balance Within 1 dB (1 kHz)
Dynamic Compliance 12x10cm-6/ dyne (100 Hz, horizontal / vertical)
Static Compliance 18x10cm-6/ dyne (optical)
Output impedance 2k Ω (1 kHz)
Load resistance 30k Ω ~ 250k Ω (Proper 47k Ω + 170 pf)
Dead weight 6.4g
Dimensions Width 14.8x Height 17x Depth 290 mm
Mounting Dimensions JIS and EIA standards
Exchange needle PN-330/II
Attachment mechanism Anti-skating mechanism
Lateral balancer
Needle pressure direct reading weight
Arm height adjustment mechanism
Arm elevation mechanism
Head Shell Stand (Common Use for EP Adapter Receiver)
Strobe light lamp
Free stop hinge
Height Adjustable Insulator
Supply voltage 100 VAC, 50Hz/60Hz
Power consumption 5W
External dimensions Width 490x Height 185x Depth 390 mm
Weight 12kg.
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