Earthworks PM40T

PianoMic System,Touring Model

OUR PART #: PM40T Write the First Review.

  • Touring Model PianoMic System in an airline carry-on case
  • The ultimate in piano micing
  • 40kHz High Definition, Random Incedence Microphones
  • Invisible from outside the piano
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Our Price: $3,199.00
List Price: $3,999.00
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To date, the numerous methods of micing a piano have all been less than ideal. Such conventional methods include placing a microphone inside the piano on a pillow, or mounting microphones on mic booms and extending them into the piano. Other approaches involve pressure-zone microphone mounted inside the piano, various type of electro-mechanical pickups in addition to mounting conventional microphones inside the piano with clamps on the piano frame or suction cups stuck to the piano lid. Not only are these mounting methods less than ideal, there are far more important issues affecting the sound. Contact pickup devices or other types of electromechanical pickup methods tyipcally sound muddy and have no real detail or transparency in the sound. When micing pianos for sound reinforcement systems, cardioid microphones are typically chosen in an effort to provide ample gain before feedback. However, the proximity effect of cardioid microphones will create an undesired low-frequency boost. When using conventional microphones there is always the problem with gain before feedback in addition to leakage from other instruments into the piano microphones.

PM40T - The Ultimate Solution in Micing Pianos for Live Performance and Touring - The original PM40 PianoMic System was designed for fixed installations in churches, recording studios and performing arts centers. The many benefits of the PM40 were quickly realized by musicians performing in concert venues and touring sound companies. The original PM40 was not collapsible and comes in a carrying case that is too long for an authorized airline carry-on. To provide a better solution for touring professionals, Earthworks engineers designed the PM40T (touring model) that is collapsible and fits in a smaller case that is ideal for airline carry-on.

The New Earthworks Approach - The PM40T and the original PM40 have been an instant success in churches, recording studios and for live performances. Touring musicians, recording studios and churches are able to get a piano sound that is far better than ever before, with an incredible amount of gain before feedback. The PianoMic microphones are not visible from outside the piano and there is virtually no leakage of other instruments into the piano microphones. Live sound and recording engineers were astounded - they could now record acoustic piano in the same room simultaneously with other instruments. They all said that the PianoMic System is incredible, hands down. When micing pianos in churches, live performance, performing arts centers or recording studios, you will be amazed when you hear the new Earthworks High Definition PianoMic System in action.

Random Incidence High Definition Microphones - The heart of the PianoMic System is two Random Incidence omnidirectional 40kHz High Definition Microphones with a frequency response from 4Hz to 40kHz, incredible impulse response and very short diaphragm settling time. When microphones are placed inside a piano they are within a sound field that has multiple sound sources: i.e. every string, the soundboard, multiple reflections of the sound from the sound board, the sides and the lid of the piano. All these sound sources and reflections produce sound waves that arrive at the microphones from all directions. This is called a diffused sound field, and the PianoMic System High Definition Random Incidence Microphones are designed to perform optimally within such a diffused sound field. In addition, these omni microphones have no proximity effect and the sound will remain the same (no increase or decrease in low frequency levels) no matter how close or how far the microphones are from the piano strings or soundboard. When these technologies are combined, you can enjoy exceptional sound quality with the piano lid either up or down.

Incredible Gain Before Feedback - The large amount of gain before feedback is achieved because the microphones are placed very close to the sound source and are within the sound field of the piano. When Earthworks first tested the PianoMic System in a church sound reinforcement system, they were able to make a piano sound louder than a loud pipe organ, and there was even more gain available before reaching feedback. These tests also showed that feeding the piano sound into choir monitor speakers would produce far more sound level than the choir members could stand without being anywhere near a level that would cause acoustic feedback.

Virtually No Leakage of Sounds from Outside the Piano - One might ask, "How can you use omni microphones and have essentially no leakage of sounds from outside the piano?" There are two important elements in the answer: (1) the microphones are placed inside the piano shell and are somewhat isolated from sounds outside the piano; (2) microphones are placed 3 to 6 inches above the piano strings, making the sound level of the piano picked up by the microphones phenomenally louder than sounds coming from outside the piano. Therefore any outside leakage picked up in the piano mics is dramatically lower in level than the sound of the piano itself.

Quick, Simple and Easy to Set Up - The PianoMic System works differently from any other microphone approach used on piano in that it uses an adjustable telescoping tube that is supported by the sides of the piano case. The telescoping tube can be adjusted to any length from 46 to 64 inches to easily accommodate any type of grand piano. The support arms that sit on the side of the piano case are smooth with a protective coating that will not harm the finish of the piano. They are less than 1/8" thick, so the piano lid can be easily closed on top of them with absolutely no danger of stressing the piano lid hinge. The telescoping tube spans across the piano over the strings and can be moved so the two microphones can be placed close to or further away from the dampers.

The telescoping tube can be placed on the piano with the microphones facing away from the keyboard. This flexibility allows a wide range of microphone placement options using the PianoMic System. As various makes and models of pianos differ in their size and construction, the highly adaptable PianoMic System will provide you with optimum results on any grand piano. The center section of the tube can be moved as much as eight inches to the left or the right if you desire to favor either the low or high strings of the piano. In addition, the flex arms allow the microphone heads to move approximately four inches to the left or right as well as up or down. This illustrates the versatility of the PianoMic System and the ease with which it can be adjusted.

The innovative PM40T PianoMic System incorporates all of the Earthworks High Definition Microphone proprietary technologies and some new ones. The PianoMic System is a dream come true for live sound and recording applications.


  • Touring Model PianoMic System in an airline carry-on case
  • The ultimate in piano micing
  • 40kHz High Definition, Random Incedence Microphones
  • Invisible from outside the piano
  • Incredible gain before feedback
  • Sounds amazing with piano lid up or down
  • Virtually no leakage from surrounding instruments
  • Quick, simple and easy setup


  • Frequency Response: 4Hz - 40kHz
  • Polar Pattern: Omnidirectional (random incidence)
  • Sensitivity: 15mV/Pa (-36 dBV/Pa)
  • Power Requirements: 48V phantom, 10mA
  • Peak Acoustic Output: 148 dB SPL
  • Output: XLR-3 (pin 2+)
  • Min. Output Load: 600 ohms (pins 2 & 3)
  • Noise: 22dBA
  • Mic Gooseneck Length: 4.875"
  • Rod Length Assembled: 64" fully extended; 46" fully collapsed
  • Rod Length Separated: 23" fully collapsed
  • Carrying Case: 24.5" x 12.5" x 4"
  • Product Weight: 6 lbs
  • Shipping Dimensions: 26" x 18" x 8"

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