Apr. 11, 2008:
Added several excerpts from interviews with Ross Snyder
and revised his biography.
Aug. 26, 2006:
Added
Beau three-speed motor installation.
Aug. 26, 2006:
Updated Dave
Dintenfass's list of Ampex parts sources and the
Ampex Repair Technicians.
Added Dave Dintenfass's modification to
achieve flat NAB recording equalization.
June 23, 2006:
Updated the list charter.
Mar. 27, 2006:
Updated List of repair
technicians.
Jan. 20, 2006:
Added
Setting up a headblock using gage blocks by Kurt Greske.
Jan. 2, 2006:
Added N20B power supply parts list
and
N20B power supply schematic.
Nov. 18, 2005:
Added
AG-440 identification guide by Tom Fine.
Sept. 20, 2004:
Added a listing of Ampex Repair Technicians.
Sept. 13, 2004:
Updated Dave Dintenfass's
Parts Sources for Ampex Buffs.
Apr. 27, 2003:
Added more exerpts from interviews with Ross Snyder,
this time about Ampex's experimental recordings in three channel stereo.
Apr. 16, 2003:
Revised the Ampex Mailing List charter.
Apr. 14, 2003:
Added more exerpts from interviews with Ross Snyder.
Mar. 14, 2003:
AddedObituaries page, unfortunately.
Feb. 11, 2003:
Added
Guide to parts and prices.
Jan. 24, 2003:
Added
Michael Guthrie's 440 Play mod.
Jan. 7 2003:
Added some audio clips of interviews
with Ross Snyder.
Jan. 7 2003:
Split pictures page into two parts, one of (mostly) machines,
the other of various list get togethers.
Dec. 27, 2002:
Added
Novice's Guide to Electronics Troubleshooting by
Rick Chinn and Jay McKnight.
Nov. 17, 2002:
Added
John Hughes's 351 restoration.
Nov. 11, 2002:
Added AG-440-8
transport control schematic, AG-500 schematic,
AG-600B master electronics schematic, and
AG-600B slave electronics schematic.
Nov. 2, 2002:
Added complete 351 manual (51 MB) and
link to site search.
Oct. 13, 2002:
Added Ampex Ultra High
Fidelity Tape Recorders in Acrobat (PDF) format and AG-300
brochure in Acrobat (PDF) format.
Oct. 6, 2002:
Revised Dave Dintenfass's parts sources document;
added link to instructions for oscilloscope usage;
various other fixes and tweaks.
July 5, 2002:
Added several new schematics,
most in Acrobat format. Replaced GIF and JPG files of some schematics with Acrobat files.
May 1, 2002:
Added 354 equalizer schematics in Acrobat format.
Apr. 10, 2002:
Fixed link to Electro-Voice. Fixed
typo on this page.
Mar. 25, 2002:
Added rev. ed. of Scott Dorsey's canonical list of Ampex tape
types. Added link to MDI Precision Motorworks. Added
Illustration of track widths in Acrobat format and
Illustration of track widths in GIF format. Added link to
Technician's Filing Cabinet
(links to schematics for consumer and professional audio, ham radio, transformers,
military electronics, test equipment, and old radios).
Feb. 1, 2002:
Added David Sarser's story of the first Ampex
three-track machines.
Nov. 19, 2001:
Added Stanford's press release regarding
their acquisition of the collection of the former Ampex Museum of
Magnetic Recording and other material from Ampex.
Sept. 18, 2001:
Added rare or unique material from
the Jack Mullin collection to Ampex
Literature and Ampex Manuals,
Schematics, and Service Bulletins pages. My thanks to Eve
Mullin Collier for providing this material and for granting
permission to make it available here.
Aug. 5, 2001:
Added JPGs of ads from Audio
Electronics for
Model 200A and
prototype of Model 300, production version
of Model 300,
Model 300 and Model
400,
Model 400,
Model 350, and
Model 450.
Added
Explanation of analog tape technology, including alignment instructions from Deutsche Welle.
Added
Art Shifrin's AG-440 wire playback machine.
May 28, 2001:
Added Ampex Magnetic Tape Trends nos.
2, 4, and 7 in low-resolution and
high-
resolution PDF files.
Added Added Ampex Professional Audio
Spare Parts Catalog, effective June 1, 1968, in high-resolution scan in landscape
orientation, low-resolution
scan in landscape orientation, high-resolution scan in portrait
orientation, and low-resolution
scan in portrait orientation.
May 16, 2001:
Added Minneapolis Magnetics's
instructions for installing heads on the 300, 350 series, 400, 450, and 3100.
Added MR-70 manual in PDF format, both
low-resolution (23MB) and
high-resolution (36MB) scans.
Added AG-440-8 brochure.
Added AG-440 price list effective Feb. 20, 1967.
Added Ampex Ultra High Fidelity Tape Recorders brochure.
May 13, 2001:
Added John French's post about
how to determine remaining head life and two links to
the JRF web site about head wear.
Added Jay McKnight's post explaining
how to determine the
maximum flux level a recorder can produce.
Added AM-10 mixer brochure to
Ampex Literature page.
May 12, 2001:
Added AG-440 (i.e., "AG-440A") schematics.
Added AG-300 brochure.
Added Jerry Hertel's
additions to Alastair Heaslett's MM1100 reliability modifications.
Added link to
Reel-to-Reel Mailing List.
Mar. 11, 2001:
Added AG-350, AG-440, MR-70 brochures and
instrumentation recorder technical document to the
Ampex literature page.
Mar. 5, 2001:
Revamped the look.
Created 5 Mar 2001; revised 26 Aug 2006.
