Based on the limited-edition AT50ANV premium moving coil cartridge, the AT-ART7 features the same basic design but exchanges the titanium armature (coil-winding frame) for a liquid crystal polymer armature, which is both thinner and stronger and does a better job of suppressing the unwanted vibration from power generation. The cartridge’s magnetic circuit uses a large-sized neodymium magnet and is designed to maximize the strength of the intensive magnetic field in the coil gap, increasing the output voltage and enhancing playback of medium-to-low frequencies. The result is extremely natural, three-dimensional sound quality.
The cartridge’s special line contact stylus, with a 40 µm × 7 µm curvature radius and a 0.26 mm diameter solid boron cantilever, enables an extremely accurate reading of the record groove and faithful transfer of the signal from the stylus tip to the magnetic coil. The dual moving coil (fashioned from high-performance PCOCC wire) offers excellent stereo separation and improved frequency response for long-lasting performance.
The hybrid housing of machined aluminum and hard plastic, along with the machined aluminum base supporting the magnetic circuit and vibration system, reduces unwanted resonance and provides stable playback.
Non-magnetic core MC type cartridge based on commemorative model AT50ANV
This product keeps the basic design of non-magnetic core MC type cartridge AT50ANV and changes the coil winding frame from a pure titanium armature to a newly developed liquid crystal polymer armature by an injection moulding. This product also succeeds in reducing the weight of the vibration system compared to AT50ANV and provides the extremely natural and clear sound quality with the ability to express three-dimensional sound fields inherent to non-magnetic core types. In addition, this product enables an output voltage of 0.12mV, a relatively high output level for a non-magnetic core system.
Liquid crystal polymer used for the coil winding frame not only has an extreme mechanical strength but also a unique property which increases the mechanical strength as the product becomes thinner. Therefore it is a most suitable material for the vibration system of cartridges. This has high intensity and vibration absorption properties, enabling high-quality sound by suppressing unwanted vibration from power generation.
The magnetic circuit of this product uses a large-sized neodymium magnet with approximately twice the volume of conventional Audio-Technica ferrite core MC types. (Maximum energy product BHmax: 50 [kJ/m3]) The permendur magnetic circuit parts located around the magnet have also been newly designed to maximise the strength of the intensive magnetic field in the coil gap. This magnetic circuit increases the output voltage, and also enhances playback capability in the medium-to-low-frequency range that is said to be a weak point of conventional non-magnetic core MC types. This provides a very accurate frequency response.
The stylus tip is a special line contact type with a 40µm x 7µm curvature radius (used in the AT50ANV) and a solid boron cantilever with a 0.26 mm diameter. This allows accurate transfer of music signals read by the stylus tip to the power generating moving coils.
The base that supports the magnetic circuit and vibration system is made of machined aluminium material. This enables it to serve as a solid base to support stable playback capability. The housing is made of machined aluminium materials and the cover is made of hard plastic materials. This disperses parasitic resonance and results in clear sound quality.
Type Non Magnetic Core Moving Coil
Mounting 1/2” centers
Frequency Response 15 - 50,000Hz
Body Material Aluminium
Channel Separation 30dB (1kHz)
Output Channel Balance 0.5dB (1kHz)
Output Voltage 0.12mV (1kHz and 5cm/sec.)
Vertical Tracking Angle 23°
Vertical Tracking Force Range 1.6 - 2.0g (1.8g standard)
Stylus Shape Special Line Contact Stylus
Stylus Curvature Radius 40 x 7 µH
Stylus Construction Nude square shank
Cantilever 0.26 mm Ø solid boron
Coil Impedance 12Ω (1kHz)
Coil Inductance 8 µH (1 kHz)
DC Resistance 12Ω
Static Compliance 35×10-6cm/dyne
Dynamic Compliance 10×10-6cm/dyne (100Hz)
Terminal Pins Brass
Recommended Load Impedance Min 100Ω
Dimensions 17.3 (H) x 17.0 (W) x 25.6 (L) mm
Replacement Stylus When the stylus is to be replaced, replace the entire cartridge. Take the used cartridge to your Audio-Technica Authorised Service Centre. The new cartridge, or any other model which is desired among the line-up of MC cartridges sold by Audio-Technica, are available at the stylus replacement price.
Accessories Included 1 non magnetic screw driver; 1 brush; 2 washers; 2 x 12 mm mounting screws; 2 Nuts; 2 x 18 mm mounting screws; 1 plastic protector; 1 set of PCOCC Lead Wires (AT6101)