Lorenz LZ-88DDA 8×8 Digital Audio Signal Processor

Lorenz LZ-88DDA 8×8 Digital Audio Signal Processor

Introduction

The Lorenz LZ-88DDA Digital Audio Signal Processor is a professional audio processing platform designed for conferencing, meeting rooms, and integrated AV communication systems. It features 8 microphone/line inputs and 8 line outputs, built-in Acoustic Echo Cancellation (AEC), and Dante/AES67 network audio connectivity for flexible audio distribution. Powered by a high-performance DSP engine, the processor provides advanced signal processing functions such as automatic mixing, matrix routing, parametric equalization, feedback suppression, and delay processing, ensuring clear and reliable audio performance in professional AV installations. 

Key Features

• Professional 8×8 digital audio signal processor for conferencing and AV applications
• Built-in Acoustic Echo Cancellation (AEC) with ≥200 ms tail length
• Dante network audio with AES67 interoperability for flexible audio networking
• 8 microphone/line inputs with selectable +48V phantom power
• 8 balanced line outputs for professional audio systems
• High-quality 24-bit / 48 kHz digital audio processing
• Advanced DSP features including automatic mixer, matrix mixer, parametric EQ, compressor, limiter, delay, and feedback suppression
• USB audio interface supporting multi-channel conferencing integration
• 8 configurable GPI/O ports for external device control
• Multiple control interfaces including Ethernet, RS-232, and RS-485
• High signal-to-noise ratio and ultra-low distortion for clear audio performance
• Front panel LED indicators for signal, clip, power, and network status
• Professional rack-mount metal chassis suitable for AV equipment racks 

Technical Specifications

General

• Model: LZ-88DDA
• Product Type: Digital Audio Signal Processor with Dante, USB, and AEC
• DSP Processor: ADI SHARC 21489 DSP

Audio Processing

• Audio Format: 24-bit / 48 kHz sampling
• System Latency: < 3 ms
• Frequency Response: 20 Hz – 20 kHz (±0.2 dB)
• Signal-to-Noise Ratio: ≥110 dB
• THD + Noise: < 0.003% (1 kHz, +4 dBu)
• Dynamic Range: Analog 113 dB / Dante 115 dB
• Channel Isolation: ≥108 dB (1 kHz)

Inputs

• 8 × Mic/Line inputs (balanced/unbalanced)
• Input Gain: 0 / 10 / 20 / 30 / 40 / 43 dB
• Input Level: +24 dBu
• Input Impedance: 9.4 kΩ balanced
• Phantom Power: +48V selectable

Outputs

• 8 × Balanced line outputs
• Output Level: +24 dBu
• Output Impedance: 102 Ω balanced

AEC (Acoustic Echo Cancellation)

• AEC Supported on mic/line inputs
• AEC Tail Length: ≥200 ms

DSP Processing Functions

• Automatic mixer
• Matrix mixer
• Parametric equalizer (EQ)
• High-pass filter (HPF) / Low-pass filter (LPF)
• Feedback suppression
• Compressor and limiter
• Delay processing
• Ducker and gain control
• Acoustic Echo Cancellation (AEC)

Networking & Control

• 2 × Dante RJ45 ports
• 1 × LAN RJ45 port
• Dante Channels: 8×8 network audio channels
• AES67 compatibility for network audio interoperability

• Supported Network Protocols:
– ARP
– ICMP
– IEEE 802.1x
– IP
– TCP
– DHCP
– HTTPS
– Telnet
– SSH

Control Interfaces

• 1 × USB audio interface (multi-channel)
• RS-232 control port
• RS-485 control port
• 8 × configurable GPI/O ports
• Ethernet control via management software

Conferencing Integration

• Compatible with Microsoft Teams Rooms and Zoom Rooms systems

Electrical

• Power Supply: 100 – 240V AC, 50 / 60 Hz
• Power Consumption: ≤ 25 W

Mechanical

• Chassis: Rack-mount metal enclosure
• Dimensions: 45 × 482 × 260 mm
• Weight: 3 kg

Environmental

• Operating Temperature: 0°C – 40°C
• Relative Humidity: 10% – 90% RH (non-condensing)

Compliance

• Certifications: CE, FCC, RoHS