Do-it-Yourself (DIY) Electronics -- modification and review pages...
A Beginner 6BQ5 SE Amplifier
Articles / Guides:
Home Theater and Video
Phono (turntable, cartridge, vinyl, record care)
Vacuum tubes (valves) and related equipment
Solid state (transistor)
Radio and wireless
Music and Recordings
"Gammelectronics.com" is now Gammelectronics.xyz -- please update your links accordingly ... thx!
above: Weird "audio art" from the late 1970s, as used in the long-out-of-print U.S.-based Audio magazine ... read more.
Below: Classic ad from audio magazines ca. mid 1970...like this image from a BIC turntable ad ...
Below: Micro-Seiki goodness ...
Below: Some classic hi-fi cartoons by Charles Rodrigues (September 29, 1926 - June 14, 2004) -- a contributor to Stereo Review (and other magazines)
QUICK DIY AUDIO PROJECTS
Audio magazine (1947-2000)
Building a Legacy--Interview with Bill Dudleston by Tom Nousaine (Dec. 1998)
Interview with Andy Kotsatos of Boston Acoustics (Aug. 1998)
Advertisements (ADs, etc.):
ADC cartridges (Oct. 1977)
Allison Acoustics loudspeakers (Oct. 1977)
Dynaco STEREO 416 amplifier (Oct. 1977)
Keith Monks Record Sweeper (Oct. 1977)
Koss Auditor headphones (Oct. 1977)
Scotch Master Series cassette tape (Oct. 1977)
SME 3009 Series III tonearm (Oct. 1977)
Superex dynamic headphones (Oct. 1977)
Thorens IsoTrack turntables (Oct. 1977)
Yamaha receivers (Oct. 1977)
Equipment Profiles (Reviews):
HISTORY of AUDIO
(based on Audio1 magazine 100th anniv. issue articles, May 1997)
 Classic Audio and Audio Engineering magazine issues are available for free download at the Internet Archive (archive.org, aka The Wayback Machine); they are also avail. at americanradiohistory.com
Stereo Review (American hi-fi audio magazine, published 1958-1999)
Here are selected articles/reviews/features and ads from classic Stereo Review issues...
ARTICLES (Departments, Features, etc.):
Hot Tip!!! DIY audio (RCA/phono) interconnects
What to use:
WIRE: I use JSC Wire--Multi-Conductor
Overall Foil Shield 75°C, 300 V, PE Insulation (the version shown here is more than two conductors)...
PHONO (RCA) CONNECTORS: Neutrik, Switchcraft, Canare, etc.
OTHER: Heatshink tubing; high-quality (silver) solder
How to wire: Blue is signal - tip on plug; Screen (shield) is return (ground) - outer on plug. So, how about white? Wire it to the outer at the signal (source) end only, making the cable "directional".
References: audioasylum.com article/thread
Shown below: inexpensive but effective Switchcraft 3502 RCA plug...
Classic review: Sony DVP-S7000 DVD/CD player
Classic review: Jamo Concert 8 and Concert Center Speakers
Classic review: Carver A-760x amplifier
Classic review: Mark Levinson No. 31.5 CD Transport
21st-Century Cinema Design--Viewing and listening requirements for a THX-quality theater design.
DIY DAP—A Do-It-Yourself Digital Audio Player: Build an embedded hardware/software system for 16-bit digital audio.
The Willowhill Pre-amp -- A high slew-rate JFET pre-amplifier
Rebuild an Old Turntable -- A simple circuit and some tinkering allow clean analog sound.
All About Speaker Cones -- Let's examine loudspeaker materials, fabrication, and quality
Ultra Low-Noise Phono Preamp [theory, concept, design and DIY project]
Wadia 27 D/A converter [review]
Theta Digital Casablanca [review]
Anthem Pre-1 Preamplifier [review]
Parasound HCA-2200-II Amplifier [review]
PS Audio Ultralink D/A Converter [review]
Benchmark DAC1 USB [review]
Teac V8000S Cassette Deck [review]
Audio Engineering Guide: Playback of Analog (vinyl) Records
Sound Ecology: environmental and health factors affecting your hi-fi equipment, your listening, and the planet
Low-Level Analog Effects Switching project (for electric guitars)
CD player round-up (early 1989): A subjective review -- players—from Magnavox, Adcom, Yamaha, and Onkyo—are in four different price ranges.
Understanding Tube Electronics (adapted from New York Audio Labs 1984 booklet, by Harvey Rosenberg): The State of Audio Technology; Tubes Versus Transistors -- Is There an Audible Difference?; A Vacuum Tube Audio Primer
The Cathode Follower and Its Weaker Siblings (Test results confirm that cathode followers are even more capable of driving capacitive loads than equivalent common-cathode amplifiers.)
Decca Stereo and the Los Angeles Philharmonic (1960s and 1970s sound engineering)
Yamaha CD-X1 Compact Disc Player -- vintage second-generation CD player; review from Audio magazine, Aug. 1984.
Mark Levinson Reference Digital Processor No.30 [adapted from Audio magazine profile, Jan. 1993, by Anthony H. Cordesman]
Optimus DCT-2000 DCC Recorder (lossy=good???) [adapted from Audio magazine profile, Jan. 1993]
Dynamic Bias Control with HX Professional (analog tape at its best!)
"Audio Talk" from audio-technica (info-ads series on phono cartridges)
The Cartridge Chronicles: Part II [two fixed-coil pickups—of the moving-magnet variety—and a single moving-coil]
Digital Up-manship (an article from Audio magazine, Jan. 1994)
Computing audio's future (an article from Audio magazine, Jan. 1994)
The Audio Bookshelf (missing some titles on your Kindle or bookshelf? read more ...)
CD (optical disc) longevity -- How durable and reliable are they? (read more...)
Old / vintage gear reviews -- WHY they are important
QUESTION: Why resurrect old equipment reviews?
ONE SIMPLE ANSWER: To keep the industry in check.
Old-is-new trends are common in all eras, gadget genres, and formats.
Gear "collectors" may be motivated by nostalgia or boredom or re-sale value (eBay stores)... but let's set these excuses aside, and simply ask this fundamental question:
How much technical progress has really been made in audio science and engineering -- that is, does modern equipment really sound better?
Is there such a thing as "timeless high-fidelity?" Perhaps, yes, if one is talking about: vinyl on classic Thorens turntables, played on decades-old electrostatic and horn loudspeakers, and (of course) through vintage vacuum-tube gear. This old stuff, when functioning properly and reliably (and maybe restored), can directly compete with many contemporary models.
Much old gear can be found on eBay and Craig’s List for considerably less money than band new (or even used-but-modern equipment, as in the overpriced used/2nd hand/trade-in section of hi-fi shops).
Knowing when to invest in old gear takes practice and skill (sometimes literally: as in using a soldering iron!). But the economic and self-accomplishment rewards are well worth it! You many never buy new gear again!
Electrodynamic / Orthodynamic:(aka planar magnetic, like Audeze brand)
This type of headphone is essentially in the same family as the moving-coil type, except that the coil has, in effect, been unwound and fixed to a thin, light, plastics diaphragm.
The annular magnetic gap has been replaced by opposing bar magnets, which cause the magnetic field to be squashed more or less parallel to the diaphragm. The " coil " is in fact now a thin conductor zig-zagging or spiraling its way across the surface of the diaphragm, oriented at right angles to the magnetic field so that sending a constant direct current through the conductor results in a more or less equal unidirectional force, which displaces the diaphragm from its rest position. An alternating music signal therefore causes the diaphragm to vibrate in sympathy with it, creating a sound-wave analogue of the music. (read more...)
Links and references for audio/video and related electronics:
Here are some other sites that contain products or information that may be of interest:
There are affiliate ads and product links on this web site. I earn income by ad-link clicks (e.g. "Ads by Google") and product sales (e.g. Amazon). If you are genuinely motivated to click a link or purchase a linked product, by all means do so. However, please realize that I obviously have financial interests here and while I try to be objective and fair in product reviews and recommendations, some personal bias may leak through. Also realize that it takes dozens to hundreds of ad-link clicks and/or product sales to affect income generation on this site. So, as an individual, your support or non-support of affiliate-linked products or ads is only a drop in a large body of water.
Updated: Thursday, 2016-12-08 18:44 PST
- A Scientific-Singularity network