NTi PA3 amplifier for reverberation speaker DS3

The portable PA3 Power Amplifier contains a DSP-based signal generator with equalizer. In conjunction with the DS3 Dodecahedron Speaker, a pink noise with an acoustically flat frequency response is produced.
The equalization ensures that the ISO 16283-1 requirement of ≤ 8 dB difference between adjacent 1/3 octave bands in the emitted sound is met.

A test signal optimized for maximum volume is available along with an external audio input jack. All control components are located on the sloped sides of the amplifier and illuminated—thus easily recognizable and accessible from a standing position. For low-frequency measurements, an active subwoofer can also be connected. The test signal can be turned on and off from outside the measurement room with a press of a button on the included remote control.