Explore the GRAS 40PM microphone with EQset technology
The Most Cost-efficient Production Line microphone in the market
This new range of microphones is ideal for entry level test settings with focus on cost efficiencies while adhering to industry standards.
GRAS 40PM microphone with EQset technology
All those Production Line microphones currently in use waste too much time on setup and installation.
Reduced Risk
By using the GRAS 40PM, measurement uncertainties can be reduced to a minimum. Probably the most costly quality risk, is the inherent risk of false passes. With the GRAS 40PM, QA departments can increase confidence in product quality by completely eliminating this risk. EQset technology ensures that all GRAS 40PM microphones have a factory-set fixed gain and sensitivity across all frequencies.
High Stability
Historically, to keep cost low, Production Line microphones were not designed to be environmentally stable. This means that relative humidity changes in the production environment would translate into severe sensitivity drift. The new GRAS 40PM design solves this stability issue and makes its stability closer in comparison to measurement microphones than standard Production Line microphones while retaining a low price point.
Ease of Use
The GRAS 40PM works out of the box and is far superior to any comparable Production Line solution. Setting up, checking and replacing a microphone in the production setting can happen quickly and easily without any kind of individual microphone adjustment or calibration.
Cost Efficiency
The GRAS 40PM is a very price-competitive, userfriendly solution that allows the user to perform acoustic measurements without the hassles typically associated with setup time, validation, downtime or time for replacing microphones. The price point combined with the reduced time needed for operator training and handling as well as the longlife time of the microphone, makes it the by far most cost-efficient Production Line microphone available.
NEW EQset™ Technology
Learn how EQset with its fixed sensitivity and
flat response curve will simplify your Production
Line setup and data acquisition
EQset is the latest innovation landmark by GRAS. This new technology, never seen in Production Line or Measurement microphones before, enables a microphone with a preset gain, also referred to as fixed sensitivity, and a flat response. Providing engineers with high workflow efficiency as well as high measurement accuracy. Furthermore, all GRAS micophones with EQset technology are fully backwards compatible, and are rigorously tested according to GRAS standards.
Fixed Sensitivity
Sensitivity variation between individual microphones varies less than 0.2 dB from nominal sensitivity. Historically, microphone sensitivity have a ±2 dB spread.
Flat Frequency Response
Response variation across the full frequency range is less than 0.5 dB. Historically, microphone response variation across the full frequency is ±2 dB.
NEW ¼” Production Line Microphone
Explore the GRAS 40PM microphone with EQset technology
The Most Cost-efficient Production Line microphone in the market
TheGRAS 40PM is a short 20 kHz pressure microphone with a dynamic range from 30 dB (A) to 120 dB and the same dimensions (34 mm long) as traditional Production Line microphones.
This new range of microphones is ideal for entry level test settings with focus on cost efficiencies while adhering to industry standards.
Since the GRAS 40PM is a high-volume microphone, it can be delivered as individually or in packs of 12 or 24 units. The GRAS 40PM can be powered by CCP or by using phantom power (a convenient power source on an audio card).
Environmental Stability
The maximum sensitivity variation when used in a Production Line environmentis so small that compensation can be disregarded.
