Beatles Recording Technology, 1966

 
A Better Bass Sound
The ever competitive Beatles — and in particular, Paul McCartney — were unhappy with the bass sound on their discs. Their models were still American and they wondered why soul discs (for example Wilson Pickett’s recordings or especially the sound James Jamerson got on Motown releases) had more bass sound.
In part, Paul’s trademark violin-shaped semi-hollow Hofner bass contributed to the problem in that it was prone to feedback and the intonation of its upper frets was erratic.
The solution was a new bass and a new recording technique. McCartney chose the bass version of the Rickenbacker guitars that Lennon and Harrison had been playing. The new bass and its unique pickuup arrangement allowed for a cleaner bass sound on recordings.
They also took to finding a better microphone to capture the bass sound. One attempt had them rewire a speaker so that it acted as a microphone. The larger diameter of the speaker was more sympathetic to the low frequencies of the bass. Consequently, the bass sound on recordings from 1966 have a warmer timbre.
They also found a device that would help them cut a deeper LP groove, allowing the large vibrations produced by the bass to resonate without throwing the needle off the disk.

Rickenbacker
Playing with Tape
One of the fundamental techniques of electronic music, and particularly musique concrete, is to manipulate the very medium of the genre: tape. The sound of the Beatles in the mid 1960s evolved in large part because of their discovery of tape effects. Two of the most obvious ways to manipulate tape is (a) to change its speed and (b) direction; moreover, as we have already seen, you can cut tape and move it.
Geoff Emerick (Lewisohn 1988: 74): With "Rain" the Beatles played the rhythm track really fast so that when the tape was played back at normal speed everything would be so much slower, changing the texture. If we’d recorded it at normal speed and then had to slow the tape down whenever we wanted to hear a playback it would have been much more work.
Technology invented for one recording effect often has applications elsewhere.
Geoff Emerick (Lewisohn 1988:74): An offshoot of ADT was that we had a big audio oscillator to alter the frequency of the tape machines . . . . We would drive it through a power amp and the power amp would drive the capstan wheel and enable you to speed up or slow down the machine at will. John — or George if it was his song — used to sit in the control room on mixes and actually play the oscillator.
Emerick (Lewisohn 1988: 74): Revolver very rapidly became the album where the Beatles would say, "OK, that sounds great, now let's play it backwards or speeded up or slowed down." They tried everything backwards, just to see what things sounded like.
One additional striking feature of "Rain" is the gibberish line at the end of the song.
George Martin (Lewisohn 1988:74): I was always playing around with tapes and I thought it might be fun to do something extra with John’s voice. So I lifted a bit of his main vocal off the four-track, put onto another spool, turned it around and then slid it back and forth until it fitted. John was out at the time but when he came back he was amazed. Again, it was backward forever after that.
Lennon also claims to have discovered the sound on his own by accidentally threading his tape deck backwards while in a drugged stupor at home.
 
Tape Loops
One of the most fundamental techniques of musique concrete is cutting and splicing tape. Composers in this medium discovered early on that by splicing the end of a piece of tape to it's beginning you created a loop. They used these loops often to create rhythmic and hypnotic patterns. As the Beatles became increasingly aware of the techniques of musique concrete, they applied them in their music.
Emerick (Lewisohn 1988:72): The tape loop idea started because they all had Brennell machines.... Paul in particular used to make his own loops at home and walk into the studio with bags full of little reels saying "listen to this!" The seagull-like noise on "Tomorrow Never Knows" is really a distorted guitar.
Martin (Lewisohn 1988:72): We did a live mix of all the loops.... All over the studios we had people spooling them onto machines with pencils while Geoff did the balancing. There were many other hands controlling the panning.
Phil McDonald (ibid): We had five machines running.... Geoff would say "OK, let’s lift that fader, that sounds good." It was done totally off the cuff. The control room was as full of loops as it was people.
Emerick (ibid): I laid all of the loops onto the multi-track and played the faders like a modern day synthesizer.
 
Voice/Sound Electronic Modulation
One innovation that the Beatles found particularly interesting was to put their voices (and anything else) through a speaker designed for Hammond organs. The creators of the Leslie had in mind an amplifier-speaker combination that would give the electronic organ's sound more space, literally throwing the sound around the room. They accomplished this by a combination of a revolving pair of horns and rotating curvalinear drum underneath the woofer.
Emerick (Lewisohn 1988:72) [on putting Lennon’s voice through a Leslie speaker]: It meant actually breaking into the circuitry. . . . I remember the surprise on our faces when the voice came out of the speaker. It was just one of sheer amazement. After that they wanted everything shoved through the Leslie: pianos, guitars, drums, vocals, you name it!
Martin (Lewisohn 1988:72): John said to me "I want to sound as though I’m the Dalai Lama singing from the highest mountain top. And yet I still want to hear the words I’m singing."
Recording the Drums
Emerick (Lewisohn 1988:72): I moved the bass drum microphone much closer to the drum than had been done before.... There’s an early picture of the Beatles wearing a woolen jumper with four necks. I stuffed that inside the drum to deaden the sound. Then we put the sound through Fairchild 660 valve limiters and compressors. It became the sound of Revolver and Pepper really. Drums had never been heard like that before.
 


End of Beatlemania Outline Beatles in the Studio
  30-mar-10