The DR15A Horn- by Bill Fitzmaurice

Direct Heaters - A guided tour by Mark Kelly

The Zero Autoformer - by Paul Speltz

High Gm smart power tubes - Third Part: Practical Applications by Stefano Perugini

Norm Thagard continues with the second part of his article on a 100W/Channel AB differential input amplifier.

Build an "against the wall" speaker by John Mattern.

Learn to design second-order crossovers by John Kerskovsky.

Tom Perazella examines Thagard's power supply design.

Revisit the 6C33C-B push-pull power amplifier as Daniel David improves on his original design.

A second look at High Gm smart power tubes.

Capacitorless Inductive RIAA/IEC Network Introduced!!

Go to the Magnetics Section Under TLR and LR Folder

An easy-to-build low-voltage tube hybird headphone/line amp--it's a good introduction to tubes.

A speaker-restoration project brings new life to a drum-head midrange.

Cornelius Morton helps take the guesswork out of complicated network crossover design.

Speaker expert, Dick Pierce, examines the best approach to take in connecting two speakers in his article, "Damping Loudspeakers in Series"

A look at the future in audio amplification with "Vacuum Tubes Again in Nanotube MEMS."

Working with TODAY's High  gm Tubes by PERUGINI Part 1

All-New collection of never before published articles on vacuum tube audio equipment. 12 construction articles including modifications and new designs of tube equipment. These articles contain parts lists, sources, construction details-everything you need to be able to construct these projects. An extensive resource section of advertisers provides sourcing for everything you need to build these and any other vacuum tube audio projects. Articles from some of your favorites including John Stewart, Joseph Norwood Still, Stefano Perugini, and others.

2002, 8" × 10½", softbound,
ISBN 1-882580-39-7. Shipping Wt: 1 lb.