Turntable Details
Drive
Belt
Motor
AC
Wow & Flutter %
0.3
Rumble [dB]
-72
Speed
33, 45
Dimensions [mm]
Platter Material
Platter Diameter [mm]
Total Weight [kg]
Tonearm
Year Built
1984
Platter Weight [kg]
1.90
Plinth Material
Price
£85
Additional information
The CJ Walker CJ 61 turntable, designed by Colin Walker, is notable for its unique construction and performance characteristics. Below is a detailed technical description of its features and design.
Design and Construction
Material Composition: The CJ 61 turntable features a predominantly wooden construction, with the only metal components being the main bearing and the springs. This design choice contributes to its distinctive sonic qualities, as the wood helps dampen vibrations and resonances.
Subchassis Design: The turntable employs a subchassis that is reinforced with multiple layers of aluminum. This structure enhances stability and minimizes unwanted vibrations during playback. The subchassis is suspended by three springs, allowing the platter to spin freely while maintaining isolation from external disturbances.
Platter: The platter is made from a wood composite material, which is designed to provide a balanced mass for optimal rotation stability. This choice of material aims to improve sound quality by reducing resonance.
Motor and Drive System
AC Motor: The CJ 61 utilizes an AC motor that is solidly mounted to prevent vibrations from affecting playback. Proper alignment of the motor is crucial; if the belt does not run centrally on the motor pulley, adjustments may be necessary to ensure optimal performance.
Belt Drive Mechanism: The turntable operates on a belt drive system, which is favored for its ability to isolate motor noise from the platter. Users have reported that modifications, such as using an outboard power supply, can significantly enhance sound quality by improving speed stability and reducing noise.
Performance Features
Speed Control: Users have noted that the turntable may run slightly slow due to motor pulley tolerances. Adjustments can be made using techniques like applying nail varnish to the pulley or replacing it with one of correct dimensions for precise speed control.
Grounding and Noise Management: A proper grounding system is essential for minimizing noise and hum. Recommendations include running a separate earth wire back to the amplifier and ensuring all metal parts are connected to this ground.
User Experience
Many users appreciate the musicality and detail provided by the CJ 61. It has been compared favorably to other well-regarded models in its class, such as those from Ariston and Linn, highlighting its value for money despite being considered an entry-level option in some discussions