From the Vault

THE BELL LABS STORY
Barry Fox looks at some historic work on sound reproduction carried out in the 1930s.

POWER SUPPLY PHASE-WANGLE
Ivor Humphreys advocates an advantageous amp alteration.

SEVENTEEN STEREO HEADSETS
Models by AKG, Audio-Technica, Beyer, Koss, Howland West, JVC, Pioneer, Sansui, Sennheiser, Sony, Stax and Technics assessed and measured by James Moir and Edward Hands.

CASSETTE VERSUS DISC
Angus McKenzie completes his survey of this topic.

ROBERT LLOYD
Edward Seckerson talks to a notable British bass.

QUALITY MONITOR
Our recently starred discs reassessed for sound quality.

MUSIC FOR WIND INSTRUMENTS
Tully Potter takes a wider look at the discography of what is an overlooked genre.

SIX BUDGET LOUDSPEAKERS
Alvin Gold listens subjectively to the KEF Coda, Acoustic Research AR8, Celestion SL6, Koss Kossfire 210, Dean Alto and Griffin Omega II.