Audio Technica High Output Moving Coil Cartridge for 78 RPM Mono Shellac records

  • 1 990:-

 AT-MONO3/SP

  • Dual moving coil cartridge designed specifically for use with 78 RPM shellac records*
  • Aluminum cantilever with 2.5 mil conical stylus
  • Strong, rigid body construction of die-cast aluminum alloy and synthetic resin
  • PCOCC (Pure Copper by Ohno Continuous Casting) coil enables pure signal transfer
  • Compatible with stereo playback systems

* This cartridge with 2.5 mil conical stylus is not compatible with  microgroove 33-1/3 and 45 RPM vinyl records. It is designed to play 78  RPM SP (standard play) shellac records.

The AT-MONO3/SP is a high-output  (1.2 mV) moving coil cartridge designed specifically for use with 78 RPM  mono shellac records.* Due to the horizontal configuration of its PCOCC  (Pure Copper by Ohno Continuous Casting) voice coils, the AT-MONO3/SP  cartridge only generates electrical signal with horizontal movement, yet  it also has appropriate compliance in the vertical direction to keep  groove wear to a minimum. The voice coils are wired in series, resulting  in one mono signal that is transmitted to the cartridge’s white-blue  terminals and red-green terminals in order to feed both inputs of a  stereo phono preamp.

 The cartridge’s low-mass 2.5 mil conical stylus is mounted on an  aluminum cantilever for excellent tracking of the wider 78 RPM shellac  grooves. The cartridge features a strong, rigid body of die-cast  aluminum alloy and synthetic resin to eliminate unnecessary vibrations.

 * This cartridge with 2.5 mil conical stylus is not compatible with  microgroove 33-1/3 and 45 RPM vinyl records. It is designed to play 78  RPM SP (standard play) shellac records.

Cartridge & Stylus
Frequency Response20-15,000 Hz
Vertical Tracking Angle23°
Vertical Tracking Force3.0-7.0 g (5.0 g standard)
Stylus ConstructionNude Square Shank
Recommended Load Impedance400-47,000 ohms*
Coil Impedance40 ohms (1 kHz)
DC Resistance40 ohms
Coil Inductance190 µH (1 kHz)
Output Voltage1.2 mV (at 1 kHz, 12 cm/sec)
Stylus Shape2.5 mil conical
CantileverAluminum pipe
Static Compliance10 x 10-6 cm/dyne
Dynamic Compliance3.5 x 10-6 cm/dyne (100 Hz)
MountingHalf-inch
Dimensions16.0 mm (0.63") H × 16.6 mm (0.65") W × 26.5 mm (1.04") D
Accessories IncludedNon-magnetic  screwdriver; 2 washers; 2 nuts; cartridge installation screws (13 mm ×  2, 20 mm × 2); plastic protector; brush; PCOCC lead wire set
Body MaterialAluminium/Synthetic Resin
Mounting FeatureHalf-inch mount
Stylus SizeBonded round shank
TypeHorizontal Mono Moving Coil
Weight6.8 g (0.24 oz)
NotesNote: Stylus assembly is not field-replaceable.

* When connected to the MC input of a transformer-less phono pre-amp,  choose a lower gain position due to the high output voltage (1.2 mV).