APEQ Hardware Equalizers: Redefining Acoustic Power Correction
APEQ hardware equalizers are stand-alone, professional-grade rack-mount processors designed to calibrate speaker systems using Acoustic Power Frequency Response (APFR) technology. Manufactured originally by Real Sound Lab, the APEQ series represents a departure from traditional graphic or parametric equalizers. Instead of relying strictly on sound pressure level (SPL) measurements taken from a single point in a room, the Real Sound Lab APEQ System evaluates the total acoustic energy emitted by an electro-acoustic transducer. This approach resolves spatial anomalies and delivers an exceptionally flat, natural frequency response without introducing unwanted artificial audio artifacts. How APEQ Hardware Operates
The APEQ system splits the correction workload between dedicated external hardware and computer software to maintain optimal efficiency and high sonic transparency:
Software Measurement: Users utilize the proprietary CONEQ Workshop measurement software on a PC to analyze their speaker setup and synthesize a highly accurate, multi-tap correction filter.
Hardware Execution: The generated correction filter is uploaded via a USB connection into the non-volatile memory of the APEQ hardware processor. Once uploaded, the 1U rack-mount unit functions entirely as a standalone system—no computer connection is needed during active playback.
Fail-Safe Processing: To ensure uninterrupted workflow in critical live sound or studio installations, the units feature hardwired safety relays. If a total power failure occurs, the device immediately drops into a hard-bypass state, passing the unaltered analog input signal directly to the outputs. Core Hardware Configurations
The APEQ lineup caters to different signal-routing architectures across pro audio, broadcast, and fixed installation environments: Analog Channels Digital I/O (AES/EBU) Form Factor Primary Target Application Go to product viewer dialog for this item. 2 Channels (Balanced XLR) 1U Rack-mount Stereo monitoring, mastering chains APEQ 2pro DIO Go to product viewer dialog for this item. 2 Channels (Balanced XLR) 1U Rack-mount Hybrid digital/analog control rooms APEQ 8pro DIO Go to product viewer dialog for this item. 8 Channels (Balanced) 1U Rack-mount Surround sound, 7.1 arrays, live sound zoning Key Performance Specifications
Engineered for transparent integration within high-end mixing and mastering environments, the hardware processors boast pristine audio specifications:
Filter Complexity: Supports long filter configurations up to 4096 taps per channel via CONEQ technology, allowing for granular adjustments across low-end and high-end problem frequencies.
Dynamic Range: Operates at an ultra-low noise floor with a 115 dBA dynamic range, ensuring no noticeable hiss is injected into the monitoring path.
Harmonic Distortion: Total Harmonic Distortion (THD) remains below 0.01% (at -0.3 dBFS), preserving the uncolored integrity of your source audio.
Common-Mode Rejection: Employs a 90 dB CMRR to reject electromagnetic interference over long balanced cable runs. APEQ vs. Traditional Hardware Equalizers Top 10 Analog Equalizers: Mixing and Mastering – Sage Audio
Leave a Reply