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

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

CONTENTS

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

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

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

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

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

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

ASK AX
box design

NEW CHIP ON THE BLOCK
AD1959 and Weber Copper Caps

GLASS SHARD
Mu-Stage Split-load Phase Inverter

  • 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

Price: £5.50 +p&p

 

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