Harmonic Design Qi5004 | DSP system Amplifier

The hd Qi series is a modular, flexible hardware and software solution for operating Harmonic Design loudspeaker systems. The 2U, 19 "rack hardware includes four balanced inputs and up to four power outputs that can be processed through a high performance DSP with IIR and FIR filtering technology. The associated user software hd LevelZ allows clear access to all parameters through a Windows-based computer or directly on the amplifier via the 3.2 "LCD display with navigation buttons.

2- or 4-channel Class-D amplifiers provide 500W for each power output. They are designed to meet the highest audio quality and reliability requirements in fixed installations and mobile applications. Due to the extreme efficiency, the heat generation of the output stage is absolutely minimized compared to conventional analogue output stages. The power amp needs less cooling and works permanently in the safe area. An intelligent temperature management system ensures the lowest possible noise emission and activates the fans only when required by the operating situation. Up to two independent SMPS switching power supplies with Power Factor Correction (PFC) ensure reliable operation even in unfavorable network conditions, such as

The integrated digital system controller hd MultiDSP has a comprehensive equalizer section consisting of 16 IIR filters in double precision with freely selectable frequency, quality, gain and slope as well as a FIR filter per input / output with a multi-level limiter architecture each Exit exists. This allows the system engineer to create a custom FIR for the installation, using the same approach as conventional multiband equalizers, but without the inherent phase shifts.

• High-end hd MultiDSP with 4In / 4Out
• 4x 500 W Class D power amp with PFC
• two separate power supplies
• FIR & IIR filters
• maximum operational safety and unlimited flexibility
• multi-level limiter architecture