Audio Technica AT-VM670SP Dual Magnet Cartridge

Meet the VM670SP

Dual Magnet Cartridge from Audio Technica

With a specialised body and internal wiring dedicated to monaural sound reproduction, plus a large curvature radius conical stylus, the VM670SP cartridge is designed for playing 78 RPM records.

Part of the 600 Series in Audio-Technica’s new VM cartridge line – a line that harks back to A-T’s early days as a manufacturer primarily of high-end phono cartridges – the VM670SP is equipped with dual magnets that are internally connected to reduce record noise and obtain a highly focused “centre” sound image that stereo cartridges can’t provide.

The stylus’s 3.0 mil curvature radius makes it an excellent choice for playing 78s from a wide variety of eras. Includes mounting hardware.

In the record production process a cutter head carves out the record grooves. The modulations in the groove are “analogue” mechanical equivalents of the original audio signals. To “read” these modulations, Audio-Technica developed the patented Dual Magnet design which duplicates the structure of the cutter head. Instead of using a single, large magnet, the two magnets are arranged in the shape of a V. 

The two magnets are positioned precisely to match positions of the left and right channels in the stereo groove walls. Consequently, the VM design provides outstanding channel separation, extended frequency response and superb tracking.

All models feature high-purity 6N-OFC (99.9999% pure oxygen free copper) wiring for maximum sonic purity and extraordinary resolution of fine musical detail.

Product Features:

• VM dual magnet cartridge with 3.0 mil conical stylus
• Aluminum cantilever
• Paratoroidal coils improve generating efficiency
• Mono body terminating left and right channels reduces surface noise
• Durable low-resonance polymer housing

Technical Specifications

Type
VM Type

Mounting
½” centres

Frequency Response
20 to 20,000 Hz

Output Voltage
3.0 mV (at 1 kHz, 5 cm/sec)

Vertical Tracking Angle
23 degrees

Stylus Construction
Bonded Round Shank

Stylus Shape
Conical Bonded (3mil)

Stylus Size
0.3 mil

Replacement Stylus
VMN70SP

Cantilever
Aluminium Pipe

Static Compliance
15 x 10^ (–6cm) / dyne

Dynamic Compliance
20 x 10^ (–6 cm) / dyne (100 Hz)

Recommended Load Impedance
47,000 Ω

Coil Impedance
1,400Ω (1kHz)

Cartridge Weight
6.4 g

Dimensions
17.3 (H) x 17 (W) x 28.2 (L) mm

Mounting
1/2" Centres

Warranty
1 year limited warranty

Included Accessories

• Cartridge installation screws 5mm ×2 and 10mm ×2
• Washer ×2
• Hexagon nut ×2
  
  

*Information obtained from Manufacturers Website