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audioXpress audioXpress: November 2003, vol.34, No.11


audioXpress November 2003 issue

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CONTENTS - WEB REPRESENTATION OF CONTENTS PAGE

ADCOM`S GFP-565 PREAMPLIFIER, PART 1
This inveterate tweaker shares with us his modifications to a classic preamp. This first part focuses on replacing the power supply.. By Gary Galo

6
A SERVO DUAL VOICE COIL SUBWOOFER
Here`s a closed loop solution to the problem of bass reproduction. By D L Ferguson

18
FLARED PORTS
Here is a simple circuit to test the short-burst output capability of any solid state or tube amp. By John L Stewart

28
AMPLIFIER BURST TESTING
Here is a simple circuit to test the short-burst output capability of any solid state or tube amp. By John L Stewart

30
MORE ON HEATER PROBLEMS, TUBRE FLASH AND ELECTRON EMISSION
This tube designer, author, and Western Electric veteran provides a unique inside look at vacuum tube manufacturing. By Bernard Magers

34
RESTORATION OT PEAVEY TKO 80 BASS AMP, PART 2
Circuit modifications to this classic bass guitar amp complete this restoration projecct, resulting in a smooth-sounding unit. By Charles Hansen and G.R. Koonce

40
AN UNORTHODOX TWO-WAY, PART 3
In the final steps of this 8" 2 way project, the author focuses on crossover construction and evaluation. By Jon Mark Hancock

50
ASK AX
box design

68
NEW CHIP ON THE BLOCK
AD1959 and Weber Copper Caps

69
GLASS SHARD
Mu-Stage Split-load Phase Inverter

72
ALSO IN THIS ISSUE
Xpress mail (readers speak out), Classifieds, Ad index, Yard sale

 

"The above is reprinted, with permission, from Audio Amateur: audioXpress November 2003 issue. © Copyright 2003 by Audio Amateur Corporation. P.O. Box 876, Peterborough, NH 03458, USA. All rights reserved."

PRICE excluding carriage:   UK / EUROPE / REST of WORLD - £5.50
  • KEY TOPICS
  • Adcom`s GFP-565 upgrade
  • Servo dual coil subs
  • Flared ports
  • Valve heaters
  • Restoring TKO 80
  • Weird 2 way
  • BOOK SPECIFICATION
  • paperback
  • black and white print
  • 72 pages
  • 205mm x 267mm
  • 170g
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