RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while tying up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
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and text used on the RF Cafe website are hereby acknowledged.
Wax nostalgic about and learn from the history of early electronics.
See articles from Radio-Electronics,
published 1930-1988. All copyrights hereby acknowledged.
If I told you that
Lester William Polsfuss is
widely credited with being a major player in the pioneering of electric guitars
due to his solid-body (no acoustic resonance chamber) designs, you might wonder
where I came up with that claim. However, if you know that Mr. Polsfuss is the surname
of Les Paul, then you would quickly agree. As if being a popular musician and, along
with wife Mary Ford, selling
millions of records wasn't enough, Les Paul was also an experimenter and inventor
in the electronic music realm. This article entitled "Les Paul: Technician and Musician"
appeared in a 1958 article in Radio-Electronics magazine, and was at the
time a contemporary look inside his home-workshop-studio, when he was first gaining
popularity. Mr. Polsfuss designed and built the record cutter that he used in his
early days using scrounged automobile and aircraft parts. Pretty impressive, non?
Record cutting machines had been commercially available since the 1940s and were
often used by laymen to create platters containing home-spun music and spoken recordings
for sharing with friends and family.
Magnetic tape was a cheaper alternative and was reusable, but cutting a record
was cooler. Note the Les Paul trademark signature already established by 1958.
Les Paul: Technician and Musician
By Eric Leslie
A tour through. the popular guitarist's studio home reveals some of the equipment
and techniques he uses to blend the electronic and musical arts into his exciting
The scene on our cover might well have been photographed in a large metropolitan
broadcast studio - but it wasn't! This ultra-modern setup is in a conventional-looking
country home literally nestled in one of the mountain-hills of northern New Jersey.
It is part of the workshop-home of Les Paul and Mary Ford, that pair who enthrall
music lovers and enthuse audio technicians by using electronics to multiply their
The visitor's first impression is that of more mikes than he has ever seen in
a broadcast studio. Then he views to his left a large control room on the other
side of a plate-glass partition, several broadcast type tape recorders, an ancient
piano (obviously from an early movie theater), a couple of vintage phonographs (Edison
and Gem) and several guitars.
A small portion of the studio. At left are two standard Ampex
tape recorders; center is the Monster; at its right the Octopus, flanked by its
eight amplifiers and - at the extreme right - the power supplies for the equipment.
But the technician is struck chiefly by the big control console that dominates
the center of the photograph on this page, and even more by Les' attitude toward
it. Referring to it affectionately as "The Monster," he swings the panel up on its
hinges, props it with an old piece of board kept inside and points out the 19 low-level
amplifiers in its belly.
The console - a complete control for stereo with a third channel if needed -
has a complete set of filters to attenuate any part of the audio spectrum, and a
fantastically flexible switching and patching system. An audio oscillator (for checking)
forms part of the console, and a vibrato unit (built, incidentally, from the Radio-Electronics
article on page 57 of the March, 1957, issue) is built into one end of the console.
Les Paul is an artist who has made his way to success by making practical electronics
part of his art. His "New Sound" (sometimes called "the Les Paul effect" by audio
technicians) is, of course, an application of electronic techniques. What is not
so well known is that Les Paul has been a researcher and experimenter in the electronic
end of the recording field since early in his career - even before his career.
His first venture into electronic music was at the age of 13 in his boyhood home
in Waukesha, Wisconsin. Fascinated by the family's radio-phone combination - a Kolster
- and discontented with the volume level of his first guitar, he decided to combine
the two. The phono cartridge was taped to the body of the guitar, with the sharp
needle embedded in the wood and the output fed into the phonograph input. The experiment
was successful, and Les had a guitar that would play at any level he liked, to the
limit of the set's volume control.
From this crude contact pickup to home recording was just a step. A trip to Milwaukee
netted another pickup and a Western Electric double-button mike. An old spring-wound
console Victrola became the recorder. The 13-year-old experimenter placed the new
pickup in its tone arm and connected the new mike and old guitar pickup to the amplifier
input. The record blanks were, of course, the pre-grooved type available to experimenters
before World War II. Les was not too satisfied with the recordings, but remembers
that his mother used it later to record him over the air from WHAD in Milwaukee,
where he started to play in 1930, at the age of 14.
The first recording assignment for which he was actually paid, however, did not
come till 1931, when he made his first commercial record (Deep-Elm Blues on one
side and Just Because on the other) for Champion Records.
Close-up of Octopus shows width of tape and the eight-track heads.
Throughout his early recording career, Les always sensed something not quite
right in his recordings. Possibly the horrible quality of some of his own boyhood
efforts had revealed to him that - the engineers to the contrary - a recording setup
need not be automatically perfect.
Finally, in 1942, during a recording session with Bing Crosby, he declared his
opinion. The stuff just wasn't right, he said. A singer shouldn't sound as if he
had his head in a rain barrel. The recording engineer was too much amused at this
outbreak from a mere musician to be insulted, but his recording partner took the
matter seriously and invited Les to do something about it - if he was convinced
that something could be done.
And Les was. Forsaking the profitable side of recording, he set up in a Hollywood
garage a studio to be devoted to research. The recorder - still used occasionally
- was a home-built job, with a Cadillac flywheel for the turntable and airplane
surplus parts for much of the rotating machinery. The bed of 3/16-inch boiler plate
adds to its "built-like-a-battleship" appearance. Les says it's completely vibrationless,
and the idea seems plausible.
(In spite of its virtues, and even though some of his best records have been
made on it, Les is ordering one of the better commercial cutters for such records
as he may find it expeditious to cut himself. Most of his records, however, are
cut from tapes forwarded from the New Jersey studio.)
In this garage studio Les worked from 1944 to 1950, always searching for better
sound. At first the research represented a steady expenditure, but toward the end
of the period its reputation grew till it threatened to become a commercial success
and Les had to hire two other people to take care of the work.
Possibly the most successful result of the research period was that of multiple
sound on a record. After much experimenting with adding parts - the "Les Paul effect"
of decaying echo - and the expenditure of more than 500 recording blanks, Lover
and Brazil were produced. An auto accident at this time put Les in the hospital
for nearly 2 years and ended the garage period. During the latter part of his hospitalization
he had time to study his problems further, and one of the results was a switch to
tape as the recording medium for the New Sound.
The Les Paul cutter, plus a playback arm. The two flat slabs
under motor and cutter are iron plate.
Tape was a natural for the job. Les added an extra playback head just before
the erase head. Then he recorded one of the parts of the projected piece of music
on the tape. When the tape was rewound and played back, the pick-up head picked
up the signals from the tape just before it entered the erase head and re-recorded
them an inch or two down the tape, combined with the second part which Les, monitoring
with headphones, was playing. The tape would now have two parts on it, and the process
could be continued as long as desired so that the finished tape might have Les playing
a dozen or more guitars. (The maximum number of parts recorded on a single tape
was 24, and 21 parts were recorded on a disc in the pre-tape period.)
With the new tape machine, Les and Mary settled down temporarily in Jackson Heights,
N. Y., and with it recorded some of their greatest successes. Here for the first
time Les ran into a new technical difficulty - neighbor trouble. Their life in show
business had conditioned them to "getting up early in the evening" and doing most
of their serious work after the show closed. To avoid eviction, they had to modify
those hours somewhat. Even then, some work was done to the accompaniment of tenants
pounding the ceiling. One recording, Just One More Chance, was actually made with
Mary singing with her head under a blanket, apparently without adding any new effect
that could be noted.
Les Paul & Mary Ford: Alabamy Bound /Darktown Strutters Ball
The only disadvantage of the tape machine was that each recording was necessarily
erased in making the next, so that an accident in, say, the 11th part would make
it necessary to do the first 10 all over again. This was the reason for "The Octopus"
- it cured that weakness.
That instrument is another Ampex tape recorder, but with a tape 1 inch wide.
Eight parts can be recorded side by side on its eight tracks. They can be blended
as required, or one or more can be rejected and new parts substituted, without losing
recordings that may be useful. They can be mixed on the control console and a trial
tape made up. If the composite recording is not all that might be desired, it is
a simple matter to erase it and try another arrangement. The original eight tracks
can still be drawn on at will.
The Octopus sits at the right of the control console in the photograph. To the
left of the Monster are two conventional Ampexes, and to the right of the Octopus
are its eight amplifiers. The tall rack at the edge of the picture contains the
power supply for the whole equipment.
But this is not the whole story. Once the visitor has recovered somewhat from
the overwhelming effect of all this equipment, Les takes him out to the "new studio,"
which was apparently the old barn. The inside is a complete television studio, two
stories high, with a control room on the mezzanine at one end and garage doors at
one side wide enough to admit a fleet of trucks driving abreast.
One might wonder how - with all this electronic equipment to keep in order -
Les gets any serious work done without the help of a full-time engineer. But the
Les Paul and Mary Ford fan need not worry - even while this article was being written,
word of their new contract with Columbia Records came out, and we can expect soon
to hear a number of their records under the Columbia label.
Posted August 7, 2020(original
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