Audio Technica AT 91

Data

General

• Manufacturer: Audio Technica
• Model: AT 91
• Years of manufacture:
• Made in: Japan
• Color: yellow
• Weight: 5 g
• Original price: 27,00 €

Technical Data

• Principle: Moving Magnet (MM)
• Output voltage: 3,5 mV / 1 kHz
• Channel balance: 2.5 dB / 1 kHz
• Crosstalk attenuation: 20 dB / 1 kHz
• Frequency response: 20 - 20,000 Hz
• Channel separation: 18 dB / 1 kHz
• Scanning capability:
• Tracking force: 15 - 25 mN (1.5 - 2.5 g).
• Recommended tracking force: 20 mN (2.0 g)
• Needle compliance: 20 × 10-6 cm/dyn
• Needle type: Conical
• Degree of diamond fillet:
• Diamond tip mass:
• Vertical scanning angle: 20°.
• Forward resistance:
• Inductance: 400 mH / 1 kHz
• Recommended terminating resistor: 47 kΩ.
• Recommended load capacitance per channel: 100-200 pF

Remarks

No longer available - Widely widened pickup from the mid 90s. Purchased from several manufacturers and installed under their own labels, Was also listed under different names with different needle colors by Audio Technica: AT 90, AT 91, AT 2001, AT 2002, AT 2003, AT 2004, AT 2005, AT 2006, AT 3000, AT 3600, AT 3600 C, AT 3600 L, AT 3601, AT 3650, AT 3650 C, AT 3650 L, AT 3651, AT 3652, Sanyo MG 40, Yamaha CG 7700,CG 7800,CG 7900 - Denon DN 82, Dual DN 239, DN 235, Sony, Kenwood.

There are also needle shapes available for this system with an elliptical cut (AT91E) but they are very rare. They appear among other things on Ebay under the designation "ATN 3652E" as a reproduction needle. In addition, Thakker offers a replacement elliptical needle as "Thakker Epo E".

Other models in the same series:

• Audio Technica AT 90
• Audio Technica AT 93
• Audio Technica AT 94 E
• Audio Technica AT 95 E

Pictures

Links

• Audio-Creativ: Audio Technica pickups 2015, retrieved 22 October 2019