The hd P18 is a bass-reflex subwoofer with a 18” speaker that is acoustically identical to the hd Sub18, except that it houses the high-end hd MultiDSP and the powerful Class-D power stages in the same cabinet and is therefore the basic component for any mobile Plug & Play system.
The custom 18" long-throw woofer with a 5" voice coil on a glass fiber support allows an excursion of ±30 mm. Through ventilation on the magnetic pole piece and the spider, the heat of the voice coil is optimally dissipated, thus an extremely high continuous power handling capacity of 1800 WRMS and 7200 W peak is possible. The lower heat development also means higher reliability and reduced thermal stress on the voice coil. The result is excellent dynamics and dry bass reproduction at an incredible sound pressure.
The integrated digital power amplifier operates in Class-D. It is designed to meet the highest demands on audio quality and reliability in fixed installations and touring. Thanks to the extreme efficiency, heat generation is absolutely reduced to a minimum compared to conventional analogue amplifiers; the power amplifier requires less cooling and operates permanently in the safety area. The power stages incorporate a highly efficient switching power supply that can deliver high performance even under difficult mains conditions, such as undervoltage or during live events due to long power lines, and is far superior to conventional power supplies with universal operating ranges from 95 to 265 V.
On the rear panel there are VU meters for each input and output channel as well as a USB interface for setting and managing all audio parameters via PC. The powerful DSP offers FIR and IIR filters to adapt the PA system to the respective application. This new DSP platform enables all processing and control functions of large audio systems in an easy-to-use Plug & Play active system.
The input section includes a routing matrix, a noise and sine generator and a freely configurable equalizer per input channel with 16 IIR filters and a 384-tap FIR filter. Each output channel has 16 IIR filters, 384 tap FIR filters, a 100 ms delay, 180° phase inversion, peak limiters, RMS limiters, gain and muting. There are 20 factory presets for all Harmonic Design loudspeaker system configurations stored for direct recall on the device so that it can always be restored to a predefined system state. This ensures maximum reliability of the connected speakers and ensures a very dynamic and linear sound.
An easy-to-read 3.2" 4-line LCD display and 5 navigation buttons enable the hd P15 to be operated simply and intuitively, as well as loading factory or user presets directly onto the device without a PC.
All functions are clearly arranged via the USB interface and the hd LevelZ remote control software: this allows you to adapt the PA system to changing daily requirements in the shortest possible time and makes the usual complete system change unnecessary, whether for a small or large event. In addition, the new (and easy-to-use) hd LevelZ PC remote software provides even more detailed information on individual requirements and an unlimited number of presets and user configurations.
With just one hd P18, you can drive two or four satellite or column speakers, as well as another passive hd Sub18. And there's more: the powerful amplifier allows you to adapt the active system to constantly changing sound requirements. Depending on the size of the room and visual requirements, you can connect small, medium or large mid / high speakers to the active subwoofers and, if necessary, use two hd P18 for a complete PA system. The DSP always ensures optimal sound at all levels and maximum operational reliability. The internal amplification saves a lot of weight, loading space and installation time. In addition, the Plug & Play system minimizes wiring and therefore potential sources of error.
Main features
Technical characteristics
English 
French
