• FEATURES
  • BASS AND THE ROOM (4)
    We are pleased to feature the work of this distinguished British author, who shares his observations on how room and design considerations affect low-frequency acoustics.
  • A HIGH-PERFORMANCE MICROPHONE PREAMP (10)
    Here's a professionally designed mike preamp project that promises very low-noise results.
  • CREATIVE USES FOR "A UNIVERSAL DIGITAL OUT" (18)
    If your audio equipment lacks digital output capability, take heart. Here's a simple solution, which will open up a whole new world of convenience and entertainment excitement.
  • THE DR12A HORN (22)
    This author's latest offering in his folded horn series is specifically targeted for 12'' driver owners who want a smallish cabinet but still demand great performance.
  • UPDATING BORBELY'S LINE AMP (32)
    Check out this author's adaptation of a proven design to see whether it will fit your own preamp requirements.
  • THE EXTREME SUBWOOFER (36)
    This dad sure knows how to please his teenage audiophile son. Here's a good-looking, good-sounding deep bass subwoofer rated X (for eXtreme).
  • OCTAL TO 7-PIN TUBE ADAPTER (42)
    Try this clever socket solution to test 7-pin tubes.
  • REVIEWS
  • THE KAB PREAMP (44)
    A phono preamp for serious collectors of 78s, early LPs, and historic recordings.
  • DH LABS CABLES (54)
    We review the latest in this company's repertory of audio cables.
  • DEPARTMENTS
  • BOOK REVIEW (72)
    Handbook for Sound Engineers. Third Edition.
  • GLASS SHARD (58)
    A Grounded Grid Line Stage.
  • XPRESS MAIL (60)
    Readers speak out.
  • CLASSIC CIRCUITRY (72)
    Grommes Hi-Fi. Courtesy of Tom Tutay.
  • IN EVERY ISSUE
  • CLASSIFIELDS (70)
    Audio-related items for sale or wanted.
  • AD INDEX (70)
  • YARD SALE (70)
    Free classifields for subscribers.