Acoustic calibrators

• Pressure calibration at all third-octave centre frequencies 63 Hz - 8 kHz in half-inch configuration, levels 80 - 130 dB
• Certification of distortion levels, timing facilities and a.c. output voltage levels
• Prices from £75

Sound level meters, personal sound exposure meters

• Selected tests based on IEC 61672-1:2002, IEC 61651:1979 and IEC 60804:1985 for sound level meters, IEC 61252:1993 for sound exposure meters
• Testing of integral octave and third-octave band filters
• Testing of computer based systems as well as hand-held meters.
• Prices from £185

Microphones

• Frequency response using electrostatic actuator, with free-field equivalent response using manufacturers' data
• Visual inspection & cleaning of diaphragms; self-noise check
• Sensitivity at 1 kHz in half- and quarter-inch configuration
• Prices from £60

Filter sets

• Testing of octave and third-octave band filters to IEC 61260 or IEC 225, as appropriate, (AV Calibration Ltd in-house procedure) over frequency range 10 Hz - 25 kHz
• Other filter shapes and combinations by arrangement
• Prices from £135

DAT Recorders and Measuring Systems

• Tests of frequency response and dynamic range of DAT recorders.
• Tests of DAT recording systems either with a sound level meter or just a signal processing system
• Prices from £85.
  

Tapping Machines

• Full test £365
• Pre-test - £75
  If the machine passes the pretest, and is fully tested, there is no charge, if it fails, advice will be sought before proceeding. This charge will only be made if the machine fails the pre-test and is not tested any further.

Headset Monitors

• AVI H2 units £75

Prices exclude VAT & return carriage