What Is a dbx DriveRack?

The dbx DriveRack is a family of digital speaker management systems that combine multiple signal processing tools into a single rack unit. Designed for live sound, fixed installations, and touring rigs, it handles crossover, EQ, dynamics, delay, and limiting. Instead of carrying separate equalizers, crossovers, and compressors, you get all of these in one device.

Originally introduced in the late 1990s, the DriveRack line has become a staple in pro audio because it simplifies system tuning and protects loudspeakers. Models range from the compact DriveRack PA2 for smaller setups to the DriveRack 4800 for large-scale tours.

Key Features and Processing Blocks

A typical dbx DriveRack includes:

  • Crossover: Adjustable high-pass and low-pass filters to send the right frequencies to subs, tops, and monitors.
  • EQ: Parametric and graphic EQ to shape the room response or correct speaker anomalies.
  • Dynamics: Compressor, limiter, and gate to control levels and prevent distortion.
  • Delay: Align speakers in time, especially in distributed systems or when using delay towers.
  • Feedback Suppression: Automatic feedback elimination (available on some models) to keep the mix clean.
  • Presets: Factory and user presets for quick setup with popular speaker brands.

Many units also offer remote control via software, allowing you to tune the system from a laptop or tablet.

Popular Models and Their Use Cases

  • DriveRack PA2: Ideal for small bands, DJs, and houses of worship. It offers a simple interface and enough processing for a basic PA.
  • DriveRack 260: A workhorse for clubs and small touring rigs, with more I/O and flexibility.
  • DriveRack 4800: Designed for large concerts and installations, with advanced routing and network control.
  • DriveRack VENU360: Combines the ease of the PA series with more professional features, suitable for venues and rental companies.

Each model serves different needs, but all share the core goal: managing your speakers so they sound their best and last longer.

Why Buy a Used dbx DriveRack?

For venue owners and AV integrators, a used dbx DriveRack can be a cost-effective way to upgrade an existing sound system without sacrificing performance. These units are built to last, and many remain in service for decades. When buying second-hand, look for:

  • Cosmetic condition: Scratches are normal, but avoid units with bent chassis or damaged connectors.
  • Functional testing: Ensure all inputs and outputs work, and that the unit powers on and passes signal.
  • Presets and firmware: Check if the unit has the latest firmware and whether presets are intact.
  • Included accessories: Power cable, manual, and rack ears are often missing; factor that into the price.

Acoustrade offers tested used dbx DriveRack units and other pro audio gear. Browse our signal processing and live sound equipment categories to find reliable gear for your next project.

How to Set Up a dbx DriveRack

Setting up a DriveRack involves a few key steps:

1. Connect sources and amplifiers: Use balanced cables to connect your mixer to the DriveRack inputs, and outputs to your amplifiers.
2. Choose a preset: Select a preset that matches your speakers, or start from scratch.
3. Set crossovers: Adjust crossover points based on your speaker specifications.
4. Tune the room: Use the EQ and delay to compensate for room acoustics and speaker placement.
5. Set limiters: Protect your speakers by setting appropriate limiter thresholds.
6. Save and lock: Save your settings and lock the unit to prevent accidental changes.

Always test at low volume first and gradually increase to avoid damaging your system.

FAQ

Q: What is the difference between dbx DriveRack PA2 and 260?
A: The PA2 is aimed at beginners and small setups, with a simpler interface and fewer routing options. The 260 offers more inputs and outputs, more processing power, and is better suited for professional touring and complex installations.

Q: Can I use a dbx DriveRack with any speakers?
A: Yes, but you will need to set the crossover and EQ parameters according to your specific speakers. Many presets are available for popular brands, but custom tuning is often necessary for best results.

Q: Is a used dbx DriveRack reliable?
A: Generally, yes. dbx units are known for their durability. However, buying from a reputable seller who tests the unit is important. Acoustrade tests all used gear before sale.

Q: Do I need a DriveRack if my mixer has built-in processing?
A: It depends. If your mixer has sufficient outputs and processing, you might not need a separate DriveRack. But for systems with multiple speakers and complex routing, a dedicated unit provides more control and protection.

Q: How do I update firmware on a dbx DriveRack?
A: Firmware updates are typically done via a computer connected to the unit's USB or network port, using dbx's software. Check the dbx website for the latest firmware and instructions.