Agnew Analog Blog

J. I. Agnew (52)

The Reliable Stylus Heating System: Type 192

The Agnew Analog Reference Instrument Type 192 is a minimalist, industrial-grade stylus heater supply unit, designed and built to last forever.
It is a current-regulated design, set at the factory for 550 mA, in an ultra-ruggedized configuration, for maximum reliability in constant-duty environments, when downtime is not an option.

The Vacuum Tube Electrochemical Synthesizer: Type 8001

The Agnew Analog Research and Development laboratory makes a major breakthrough in the fight against the SARS-CoV-2 pandemic!



It is not a vaccine and it probably won’t do much against the virus itself (although it has been suggested that it could have an effect not unlike the yodeling of Slim Whitman upon the aliens in Tim Burton’s “Mars Attacks”, either on the virus or on humans, or both), but will at least give you something to do while you wait it out.

The Agnew Analog Reference Instrument Type 8001 is a unique electrochemical synthesizer, generating strange sounds through chemical reactions occurring in the built in reactor cell.

Westrex 2B Stylus Adapter

The Westrex 2B is a motional feedback cutter head, introduced in 1952 by the Western Electric Export Company. It followed hot on the heels of the Westrex 2A, dating from 1947, which was itself a lateral implementation of the principles first described by Wiebusch, Vieth and Yenzer in 1938, with a couple of relevant patents issued by 1939, for a vertical cutter head employing motional feedback.

Direct-Drive Conversion on a Fairchild Lathe

The Fairchild line of disk recording lathes, first appearing in the early 1930’s, featured a General Electric hysteresis synchronous AC motor, running at high speed, with a worm and gear reduction to drive the platter. While this system in its various permutations in their different models was impressively well made and performed well for its time (see here for a more detailed description and pictures), a direct-drive system with a floor mounted motor is clearly the way to go if the highest level of performance is to be attained.


Type 1501 Stylus Shank Adapter gets a Flat!

Our popular Agnew Analog Reference Instrument Type 1501 Stylus shank adapter was intended to make it possible to use the Neumann-style taper shank stylus (Transco 320, Adamant NSH-2, etc) with vintage mono heads such as the Presto 1-C and 1-D, which need a long shank stylus.

Up to now, customers would just install the adapter and leave it there, only occasionally replacing the stylus. One customer, however, wanted to be able to leave the stylii aligned in the adapter, and change them out without needing to realign.