The short version
A record player plays music by spinning a vinyl record while a tiny tip, the stylus, rides in the record’s groove. The wiggles in the groove make the stylus vibrate. A cartridge turns that vibration into a very small electrical signal, which is boosted by a preamp and an amplifier and finally turned back into sound by speakers.
What is in the groove
A vinyl record has a single spiral groove running from the outer edge toward the center. The groove is not smooth. Its walls carry microscopic variations that are a physical copy of the original sound vibrations. Louder sounds and different pitches produce different shapes in the groove walls.
On a stereo record, the left and right channels are carried on the two walls of the same groove, so one groove holds both channels.
Spinning the record
The motor turns the platter at a set speed, most commonly 33 1/3 RPM for LPs and 45 RPM for many singles. Some players also offer 78 RPM for older records. The right speed matters: a record played too fast or slow will sound higher or lower in pitch than it should. For the hardware involved, see our guide to the parts of a record player.
From stylus to electrical signal
You lower the tonearm so the stylus sits in the groove. As the record turns, the stylus follows the groove walls and vibrates. Those vibrations move through the stylus’s supporting arm, called a cantilever, to the inside of the cartridge.
Inside the cartridge, a magnet and coil arrangement turns that motion into a tiny electrical signal. In the common designs, either a magnet or a coil moves relative to the other, and that movement generates the signal. The tip that does the touching is explained in what a stylus is.
Preamp, amplifier and speakers
The cartridge’s signal is very weak, and it is also shaped in a special way. Records are cut with a standard equalization curve that reduces bass and boosts treble during recording, to fit the groove and reduce noise. A phono preamp boosts the signal and reverses that equalization so the music sounds natural.
After the preamp, the signal goes to an amplifier, which strengthens it enough to drive speakers. The speakers move air and produce the sound you hear.
Some turntables have a phono preamp built in, some amplifiers include a phono input, and all-in-one record players often contain the preamp, amplifier and speakers in one box.
What a record player needs to play music
At minimum you need:
- A turntable with a working stylus and cartridge
- A phono preamp (built into the turntable, the amplifier, or a separate box)
- An amplifier or powered speakers
- Speakers or headphones
Can a record player play without speakers
Not audibly in a normal way. A record player on its own produces a faint acoustic sound from the stylus vibrating, but it is generally too quiet to enjoy. Electrical playback needs an amplifier and speakers, though some all-in-one units have these built in. Some turntables can also output to headphones or Bluetooth speakers depending on the model.
Very old mechanical gramophones worked differently. They used a horn to acoustically amplify the stylus vibrations, with no electricity at all. Today’s players are electric.
Playing a record step by step
- Place the player on a stable, level surface.
- Check the speed setting matches the record (commonly 33 1/3 or 45).
- Handle the record by its edges and label, and set it on the platter.
- Remove the stylus guard if there is one.
- Start the platter, then lower the tonearm gently using the cueing lever or by hand at the lead-in at the outer edge.
- At the end of the side, lift the arm and return it to its rest.
Follow your model’s manual, since automatic players behave differently.
Record player vs turntable
The two names are often used interchangeably. Many people use “turntable” for a deck that needs separate speakers, and “record player” for an all-in-one unit. The way the music is read is the same either way.