Product list

Precision sound calibrator Larson Davis CAL250 is a battery operated precision microphone calibrator for 1" microphones used for the calibration of sound level meters and other sound measurement equipment.

• Output level: 114 dB
• Output frequency: 251.2 Hz
• Standard: 1" microphone
• IEC 60942-1:2003 compliant
• Internal battery
• Output level independent of battery condition
• Adaptors: ¹⁄8", 1/4", 3⁄8", 1/2" microphones
• Array adaptor for 8 microphones simultaneously.

Precision sound level calibrator Larson Davis CAL200 is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment with 1/2" microphones.

• Output level: 94 or 114 dB
• Output frequency: 1 kHz
• 1/2" microphone opening
• IEC 60942-1:2003 compliant
• Internal battery
• Output level independent of battery condition
• Adaptors: ¹⁄8", 1/4", 3⁄8" microphones.

Handheld sound level calibrator Larson Davis CAL150 is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment.

It can provide an output level of either 94.0 or 114.0 dB (switch-selectable) at a frequency of 1 kHz. CAL150 includes an adaptor for 3⁄8" microphones. A 1/4" adaptor is also available as an optional accessory.

• Output level: 94 or 114 dB
• Output frequency: 1 kHz
• 1/2" microphone opening
• IEC 60942-1:2003 compliant
• Internal battery
• Output level independent of battery condition
• Adaptors: 1/4", 3⁄8" microphones.

Whether testing an earphone, hearing aid, or audiometer, there is Acoustic couplers and Ear simulators Larson Davis Series AEC & AMC to satisfy your requirements.

• Supra-aural earphones
• Circumaural headsets
• Bone vibrators
• Insert earphones
• Hearing aids.

Whether for performance venues, architectural measurements, or work-place acoustics, reverberation time is a key parameter for characterizing a room. Reverberation time data provides information about the quality of sound as perceived by the audience in a room. A long reverberation time can make speech less intelligible, and music more pleasing. Too short a reverberation time can muffle speech and make a room sound “thin.”  Reverberation time sound level meter Larson Davis 831C-RT with Room Acoustics Firmware 831C-RA offers reverberation time measurement and calculation.

• Calculates reverberation time (RT60)
• Ensures measurement reliability with ensemble averaging
• Serves as pink and white noise source
• Supports optional amplifiers and omni-directional or façade speakers
• Triggers measurement automatically
• 1/1 and 1/3 octave filters supported
• Offers measurement quality indicators and grading.

Impulsive sound source Larson Davis BAS006 is an innovative device used to create impulsive noise that includes low frequency energy and avoids problems like secondary bounce.

• Use for ISO 10140, ISO 140, DIN 52210,and BS 5821 Measurements
• Maintenance Free Design
• Simple, Easy-to-Use.