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The PianoMic™ System provides the following benefits:

      •  Excellent overall piano sound with uniform level from all strings

      •  Superb sound with the piano lid up or down

      •  Tremendous gain before feedback 

      •  Minimal leakage from other instruments surrounding the piano

          (with piano lid closed)

      •  Microphones are not visible from outside the piano

People are astonished when they hear the exceptional sound quality of 

the  PianoMic

  System  with  the  piano  lid  closed.  Conventional  microphones 

perform poorly in a piano as the sound inside the piano is coming from every 

direction and from multiple sound sources. Every string is a sound source. The 

sound  board  is  a  large  and  complex  sound  source.  In  addition,  sounds  are 

reflected off the piano sides, the sound board and the piano lid multiple times 

with little attenuation. Sounds inside a piano are randomly arriving from every 

possible direction at similar levels, all at the same time. This is a classic exam-

ple of a “diffuse sound field” which is defined as a confined area where there are 

multiple sound sources and multiple reflections arriving at the microphone from 

every angle at similar levels simultaneously. A microphone that is placed in such 

a diffuse sound field has to pickup all of the sound with a proper tonal balance. 

For optimum results, this task requires a High Definition Random-Incidence Mi-

crophone.

Conventional  microphones 

are  “Free  Field”  micro-

phones,  and  regardless 

of their pickup pattern are 

designed  to  only  pick  up 

sounds  accurately  in  front 

of the microphone 

(See Fig-

ure 2).  

Random-incidence    micro-

phones are designed to uni-

formly pick up sounds arriv-

ing  simultaneously  from 

all  angles  and  directions, 

rather  than  to  the  sound 

coming only from a primary 

source that is in front of the 

microphone.  Random-inci-

dence microphones have ex-

ceptional accuracy and tonal 

balance  in  a  diffuse  sound 

field,  where  sound  arrives 

from all directions randomly 

and  simultaneously 

(See Fig-

ure 3).

 

4

 

Figure 3. Random Incidence Microphones inside a piano pick 

 

up sound accurately from all directions 

Figure 2. Conventional “Free Field” Microphones inside a piano

only pick up sound accurately in front of the microphone

Any recording or live sound engineer will tell you that conventional microphones 

do a poor job inside a piano with the lid closed.  Sound engineers were amazed 

when they heard the exceptional sound quality of the PianoMic™ System used 

inside a piano with the lid open and at half-stick. But they were absolutely floored 

upon hearing the fantastic performance with the lid closed.

When using a PianoMic

 

System for live performance you will achieve the most 

gain before feedback with the piano lid fully closed. You will also have the least 

amount of leakage from sounds outside the piano with the piano lid closed.

We know you will be more than pleased with the performance of the PianoMic

 

System for both recording and live sound applications.

SETTING UP THE PIANOMIC

1. With the PianoMic

 assembled, 

loosen  the  two  clutches  on  either 

side of the two microphone goose-

necks (See Figure 4). 

When adjust-

ing the clutches, be sure to hold the 

larger diameter tube section with 

one hand while rotating the clutch 

with the other hand as indicated in 

figure 4.

 However, do not loosen the 

clutches all the way; just enough so 

the  bar  can  be  extended  and  still 

have a little friction. This will make 

it easier to adjust the length of the 

bar from both ends once it is placed 

inside the piano.

2.  Extend both sides of the bar so 

that it is wider than the piano.  

3.    Notice  that  on  each  end  of  the 

PianoMic

 bar there are support brack-

ets  that  will  be  placed  on  the  upper 

edge  of  the  piano  case  sides.  These 

support brackets have rounded edges 

and are covered with a soft Polyolefin 

coating to avoid scratching the piano. 

The support brackets are thin enough 

to allow the piano lid to be completely 

closed with the PianoMic

 System in-

side the piano. The PianoMic

 comes with felt pads installed on the top of each 

support arm. If you desire a more snug fit with the lid closed or if vibration be-

comes an issue, install one of the enclosed spare felt pads on the bottom side of 

the support brackets as shown in Figure 5. 

5

Figure 4. Loosening the Clutches

Figure 5. Support Arms and Installing Felt Pads 

Summary of Contents for PM40T

Page 1: ...Made in U S A Earthworks Inc 37 Wilton Rd Milford NH 03055 603 654 6427 www earthworksaudio com email sales earthworksaudio com Printed in U S A User s Guide PM40T Piano Microphone System for Touring...

Page 2: ...es for miking pianos have changed Conventional miking practices suggest that a piano must be miked from out side to achieve a good sound and that a good piano sound cannot be achieved with closely pla...

Page 3: ...ig 1 C Figure 1 C Rotate collar two turns to the left 3 4 Now take the two PianoMic telescoping sections and mate the connectors just like you would mate a standard XLR connector see Fig 1 D First mat...

Page 4: ...ely from all directions Figure 2 Conventional Free Field Microphones inside a piano only pick up sound accurately in front of the microphone Any recording or live sound engineer will tell you that con...

Page 5: ...Figure 8 Positioning the PianoMic Cable PianoMic multi conductor shielded cable that connects to electronics box via 5 pin XLR Figure 6 Facing the Mic Heads Towards the Dampers Figure 7 Facing the Mi...

Page 6: ...e electronics box 1 in a leather pouch strapped to the leg of the piano or 2 attached to a short mi crophone stand The PianoMic System comes equipped to install the electronics box in either of these...

Page 7: ...btle detail and a more pristine quality in the sound than with any other microphones regard less of price Since David s death in 2002 the Earthworks engineers have continued to develop new innovations...

Page 8: ...Notes 12...

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