dbx DriveRack PA2

A compact processor with AutoEQ, feedback suppression, and smartphone control for taming unruly PA systems -

Overview

The dbx DriveRack PA2 is a loudspeaker management system. It sits between a mixer and the power amplifiers and applies real-time optimization and protection to a live sound system. It belongs to dbx’s flagship DriveRack series and targets touring bands, mobile DJs, and small venue operators who need consistent, professional-grade PA tuning without deep technical expertise. The unit is a 2x6 design - two inputs and six outputs - so it can route and condition signals for mains, monitors, and subwoofers. Inputs are two line-level inputs and a dedicated RTA mic input. The mic input works with the included DBX RTA-M measurement microphone for room analysis and automated equalization.

Add Android and iOS remote control through a dedicated app, and it becomes a practical tool for engineers who move gear often or have no full-time sound technician. The unit is rack-mountable. It favors easy deployment over modular expandability or studio-grade precision. Detailed electrical specs like frequency response, THD, or output impedance are not documented in available sources. The design appears aimed at reliability, integration, and real-world use in live rooms.

Key Features

AutoEQ™ with Improved Room Correction Algorithm

The DriveRack PA2 has an updated AutoEQ algorithm that analyzes the acoustic response of a venue through the included RTA-M measurement microphone. According to dbxpro.com, this revised algorithm ensures “an extremely…” - the claim is cut off in the source. User-facing materials suggest it gives faster, more accurate room correction than its predecessor. The system walks the user step by step through placing the mic and capturing response data. It then applies a corrective 8-band parametric EQ across the output channels. This automation helps most in temporary installations, where manual tuning is impractical.

Advanced Feedback Suppression (AFS)

Feedback control comes from dbx’s AFS (Advanced Feedback Suppression) system. It reportedly listens for feedback frequencies and anticipates them before they become audible. According to dbxpro.com, engineers revisited the algorithm from the original DriveRack PA and improved its responsiveness and accuracy. The system monitors the output signals continuously and engages narrow-band notch filters only when needed, which preserves overall tonal balance. This matters most for vocal-heavy performances in reflective spaces, where feedback can derail a set.

Integrated EQ and Compression

Processing includes a graphic EQ and an 8-band parametric EQ, for broad tonal shaping or surgical corrections. The parametric EQ can be adjusted by hand or driven by AutoEQ results. dbx Compression is also built in. It gives dynamic control on input or output channels to prevent amplifier clipping and protect speakers. Together with the real-time analyzer (RTA) function, these tools line up with Grokipedia’s description of the DriveRack series as tools for “advanced speaker optimization and auto-EQ,” praised for reliability in live venues.

Remote Control via Mobile App

The unit has full control from Android and iOS devices over a local connection. Users can adjust EQ, engage AFS, toggle presets, and monitor system status from the stage or the audience area without walking back to the rack. That helps in distributed sound setups where the processor is installed out of reach.

Historical Context

The DriveRack PA2 succeeds the original DriveRack PA, which Sound On Sound described as already “cost-effective” at its launch. According to the same source, the DriveRack range has been a strong seller since its introduction “a few years” before the PA2’s release. As part of dbx’s flagship product families, the series helped popularize automated loudspeaker management in mid-tier live sound. No production years are documented, but the model appears in period trade publications like Pro-Sound by 2013. Pro-Sound (December 2013, p.41) notes the PA2’s expanded footswitch options and improved marker functionality over earlier versions.

Collectibility & Value

No original MSRP is confirmed. A ProAudioStar open-box listing shows a previous price of $655.00, which may reflect an earlier retail or MSRP value. Current eBay listings as of the research period show new or unused units selling between $189.99 and $209.99, which suggests significant depreciation or clearance pricing. No data is available on common failures, maintenance issues, or spare parts availability. Collectibility appears low, with no enthusiast subculture or restoration guides documented. The unit is valued as functional gear rather than a vintage artifact.