Piano and Grand Piano Microphones

Grand and upright pianos need different placement

A grand piano has horizontal strings and a lid that affects the direction of its sound. An upright uses a vertical construction, so the same microphone coordinates cannot simply be transferred from one to the other. Establish the instrument type, room position, access to strings and whether relevant panels may be opened. Any handling of the case must suit its construction and the owner's conditions. Microphones cannot compensate for poor tuning or mechanical faults, so check the instrument before recording.

Define the genre and role: a solo classical work, jazz trio or keyboard accompaniment in a pop arrangement. One task may need a coherent concert perspective, while another calls for clear attack and a part that fits between other instruments. Describe the intended result in these practical terms before comparing models solely by diaphragm size or price. This also helps identify an appropriate working distance.

Register balance matters more than one impressive chord

Ask the pianist to play a bass line, middle register and high notes with a consistent musical intention, followed by a complete passage with pedal. A position that flatters a low chord may leave the melody unclear or overly sharp. At close distances, small capsule movements change the contribution of individual string groups and action noise. Seek a musically even balance before applying equalisation and compression.

Do not judge the result only from an isolated note without pedal. Resonances, long decays and harmonic transitions belong to the actual performance. Record both a quiet introduction and the strongest climax while leaving level headroom. Check that the character remains convincing in both. If a change of register produces an abrupt shift in image or volume, investigate pair geometry rather than only channel settings. Repeatable musical phrases make comparisons more useful.

Close detail and natural room perspective

Close microphones offer more direct sound and control in an ensemble but can emphasise hammer attack and local differences. A distant pair includes the instrument and room together, which is helpful only when the room contribution suits the production. Long or uneven decay does not become desirable merely because it is recorded in stereo. Listen from the proposed microphone area and compare several distances using short passages.

The grand piano lid position is part of the sound setup, not simply a visual decision. Reassess direction and level after changing it. A stage with other loud sources may favour compact internal arrangements, but these require appropriate mounts. Do not trap cables under the lid or leave loose objects near moving parts. Before the performance, confirm that the complete installation remains clear of the player and instrument action.

Stereo width, centre image and mono compatibility

Stereo can represent the physical breadth of the instrument, but maximum width is not always appropriate for the arrangement. Decide which perspective the listener should hear and how much space the piano should occupy. Placing two microphones over bass and treble strings does not automatically create a natural image. Check that notes move smoothly through the middle register rather than sounding like two separate instruments at opposite sides.

Listen to the channels individually, together and summed to mono. If summing substantially changes the core tone, adjust position and distance. A matched pair helps provide similar channel characteristics but does not replace suitable geometry. Introduce extra room microphones gradually because their timing relative to the close pair affects the result. Separate tracks preserve the option to find useful proportions after the session, when comparisons can be made calmly.

Mechanical noises, mounting and input headroom

Pedals, keys, the bench and performer movement may become noticeable in quiet sections. Some of these sounds are natural, but an avoidable squeak or knock is best addressed at its source when that can be done without interfering with the mechanism. Filters alone may remove useful bass along with noise. Changing microphone direction or moving away from a noisy component can sometimes produce a cleaner result without elaborate processing.

Check mount stability and whether its contact surfaces are appropriate for the instrument. A magnetic holder should be used only where its design permits, not attached arbitrarily to any part of the case. Condenser models require the specified power, and a pair needs two suitable inputs. Set gain from the strongest accents and retain headroom while preserving quiet passages. Check cables before recording a complete take rather than discovering an intermittent connection afterwards.

Questions about piano microphone setups

Can I begin with one microphone? Yes, if a mono part is suitable or only one input is available; check coverage across every register. Does a digital piano need microphones? Its electronic sound is normally recorded through provided audio outputs or supported USB audio. MIDI alone is not an audio signal. Must the lid be fully open? No. The intended sound and operating conditions determine the useful lid position.

Why are the hammers too prominent? Try another direction or distance while comparing a complete musical passage. Will an expensive pair fix a small room? It will not remove unsuitable room acoustics; placement and preparation still matter. What information helps with selection? Provide instrument type and size, genre, room conditions, permitted mounting methods, input count and whether other musicians will perform simultaneously. Include the recording or reinforcement objective so that the setup can be assessed as a whole.