The FX100 Audio Analyzer allows to acquire the impedance response of virtually all loudspeaker types, ranging from small mobile phone transducers, mid-range drivers, tweeters, woofers and large Pro-Audio stacks to distributed audio 70 V / 100 V loudspeaker systems.
The tests are executed with a logarithmically swept GlideSweep. This technology ensures very fast, yet precise measurement results. The FX-SIP module with its built-in power amplifier supports the simplest possible wiring. In order to prevent systematic measurement errors such as cable impedance, a 4-wire connection cable with sense lines is provided.
In addition to the impedance response, a wide range of derived or separate results can be calculated or measured, too. Thus, the complete electrical characterization of the device under test (DUT) can be acquired in only one test cycle.
Low to medium power devices (mobile phone transducers, consumer audio, multimedia, automotive etc.) are covered by the FX-SIP module. Besides the impedance measurement functionality, it also provides a built-in audio amplifier, thus featuring a very compact and easy-to-use test solution. The FX-SIP module is suitable for speakers up to 30 W into 2 Ω or 4 Ω, or up to 20 W into 8 Ω.
Medium to high power loudspeakers (e.g. Pro-Audio, HiFi) are covered by the FX-SIH module, which can test loudspeakers from 1 W up to >1 kW. The FX-SIH requires an external power amplifier in the test setup.
Example of a mid-range driver impedance response:
Together with the 100 V RT-IB Impedance box, the FX100 can also measure the impedance response of distributed audio 70 V / 100 V loudspeaker systems.
Example of a 100 V loudspeaker impedance response: