How to Say "diaphragm" in Spanish
The Spanish word for “diaphragm” is “membrana” — B2 level.
English → SpanishB2
nounB2
mechanical or audio part

Examples
La membrana del altavoz está rota y el sonido es malo.
The speaker diaphragm is broken and the sound is bad.
Prefiero los teclados mecánicos a los de membrana.
I prefer mechanical keyboards over membrane ones.
La bomba utiliza una membrana flexible para mover el agua.
The pump uses a flexible membrane to move the water.
Describing Technology
When talking about tech, we often say 'de membrana' to describe the type of device, like 'un teclado de membrana'.
Don't confuse with 'parche'
Mistake: “Saying 'membrana de tambor' when you mean a drumhead.”
Correction: While technically a membrane, musicians usually call the top of a drum a 'parche'.
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