Audio Precision APx1701 Series, Installation Instructions Manual, Page: 37 / 44

Chapter : User’s Guide
APx1701 Transducer Test Interface: User’s Guide 19
Testing a loudspeaker (near field/far field)
Simplified diagram for acoustic
testing and impedance
measurement of a loudspeaker driver
using near- and far-field microphones.
Testing headphones
Simplified diagram for acoustic
testing of stereo headphones
using a headphone fixture.
Mount the headphones to a fixture, and connect the
APx1701 amplifier output channels to the headphones. Typ-
ically, headphones use a TRS (tip-ring-sleeve) plug, and
you should make an adapter cable to accommodate this. See
the illustration on page 15. Mount the measurement micro-