Description

Each pair of NPPA4 channels contains a complete 96kHz digital loudspeaker management and control subsystem. This is built up around an extremely powerful state of the art floating point SHARC based DSP engine. Critical components in the audio path, so important to the sound quality, have been selected with great care and after extensive listening tests. Our choices have resulted in performance that in independent assessment equals the finest stand alone processors. A simple PC connection allows customers to manipulate DSP parameters so as to optimise the performance and develop settings for particular applications. These settings are stored in the XiB so a PC is not necessary for operation. The NPPA4 also has the capability to recall up to four different sets of settings by the means of rear panel contact closure inputs. This can be particularly important in voice evacuation applications where, for example, it may be required to mute the current source of audio, switch to an alternate input carrying an evacuation message and broadcast it with different level and EQ settings.

Even without a PC connection, the amplifier will continuously record logs against time for the temperature readings, and the state of amplifier protection for up to 3 days into the past. These logs can be easily viewed at any time, the data logged can even be exported to a spreadsheet for further analysis. This makes it easy to assess how systems have been used when engineers have reported problems.