System Processor

dbx DriveRack PA2

The dbx DriveRack PA2 is the budget loudspeaker management workhorse — stereo input, six outputs, AutoEQ for room tuning, AFS (Advanced Feedback Suppression) for taming wedges, plus crossover and alignment delay for sub/top systems. Lives between a small console and the amp racks at houses of worship, regional touring, and bar bands. Not a Lake LM, but at one-tenth the price it gets the job done for thousands of small-and-mid-size shows a year.

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Photos

Manufacturer product photography — the drawn faceplate stays true to panel layout; these show the hardware itself.

dbx DriveRack PA2 — Photo: dbxClick to zoom

Documented outputs: 66 destination connections
Documented inputs: 4Based on documented inputs
Rack space: 1UBuilder checks available rail space
Power draw: 22WDocumented typical draw
Catalog estimate: ~$599Use retailer rows for current price and stock

01 · What it does—and what that changes in your rig.

Product overview

Start with the payoff, then work through how it functions, where it fits, and the details that change a real build.

The payoff

System Processor decisions, organized around the whole rig.

The DriveRack PA2 sits between your console outputs and your amp rack, doing the work that separates a tuned system from a pile of boxes pointed at an audience. Two XLR inputs split to six XLR outputs, which gives you enough legs for a typical two-way main system plus subwoofers — or a simple three-way if you're running mono. It handles crossover duties, alignment delay so your subs don't smear the low end of your tops, and system-level EQ so you're shaping the room rather than fighting it at the mix position. For houses of worship, regional touring, and bar-gig rigs where a dedicated system tech and a Lake processor aren't in the budget, this is the unit thousands of engineers reach for.

Documented outputs: 66 destination connections
Documented inputs: 4Based on documented inputs
Rack space: 1UBuilder checks available rail space

dbx product panel1U · 22W

Function

How it works in the path

At load-in, the RTA mic input and AutoEQ wizard are the practical headline. You're not getting a full acoustic measurement platform here — it's a pink-noise sweep with a built-in correction curve — but it gives you a faster starting point than walking in blind, especially in rooms you've never touched before. AFS feedback suppression is genuinely useful if your rig doubles as a front-fill or floor-monitor source, where ring buildup is a real threat before doors. Ethernet control via the dbx Drive app means you can walk the room and trim the system from your phone without running back to the rack. Power draw is 14 watts nominal, topping at 18, so it's nearly invisible on any conditioner's budget.

Best fit

Where it earns its place in the rack

If you're running a straightforward two-way or 2.1 system in a fixed or semi-fixed install, a regional club rig, or a portable church setup, the PA2 earns its rack space comfortably. If you're running a more complex system — multiple amplifier zones, line arrays with per-cabinet drive requirements, or a rig where the system engineer and mix engineer are different people with network recall expectations — you'll outgrow it quickly and should be looking at dedicated DSP platforms with more robust software ecosystems. This is not a knock on the unit; it's an honest description of where its ceiling is.

In the rack

Details worth deciding before load-in.

Map your six outputs on paper before you plug anything in — crossover point, polarity, and delay for each zone — so the wizard setup reflects your actual system topology rather than a generic preset you'll regret at soundcheck.
Use the alignment delay on outputs feeding your subwoofers to time-align them to your tops before you do any EQ work; chasing low-end problems with EQ when the real issue is phase is the most common mistake on rigs like this.
The Ethernet port is worth using even if you don't need remote control day-to-day — save a named snapshot of your tuned system before every show so you have a clean restore point if the unit gets bumped or reset.
If AFS is on and you're using any outputs as front-fill or near-fill feeds rather than pure FOH, keep the AFS filter count conservative; let it catch the obvious rings rather than maxing out the filters and letting it reshape your frequency response mid-show.

02 · Know the whole path before you buy.

Signal path

Learn the route as a block diagram: source, product function, transport, and destination. Select any block to see what enters, what changes, and what leaves.

Interactive block diagramAuto-looping · hover, focus, or tap to hold a stage

Port-type signalProduct functionSystem boundary

Follow one signal from source to destination

Each block answers the same three questions: what arrives, what changes here, and what leaves.

01 · Source · selected

01 · Source

4 documented inputs

XLR female + IEC C14

Arrives as: 4 documented inputs
Connector: XLR female + IEC C14
Signal: analog audio

03 · What this product asks of the rest of the system.

Compatibility

Treat connector names as the start of the check—not the answer. These are the boundaries that determine a complete working path.

Best fit · System Processor

Use it when 1U and 146 mm of depth fit the case.

Plan the companion path

Complete the path with upstream and downstream gear that matches connector, direction, signal type, protocol, and wiring standard.

Connector boundary

Documented connectors: XLR female, XLR male, RJ45, IEC C14. Match connector, direction, and signal type—not shape alone.

04 · Every connector, grouped by job.

I/O ports

Switch the product view and the documented port inventory updates with it—hardware and data stay side by side.

Every connector, grouped by job.

Switch panels to keep the hardware view and the documented port list in sync.

Panel view

Front panel

Rear panel

All documented ports for dbx DriveRack PA2
Port	Panel	Connector	Direction	Signal	Channels
INPUT LEFT/MONO	rear	XLR female	input	analog audio	—
INPUT RIGHT	rear	XLR female	input	analog audio	—
OUTPUT LOW LEFT/MONO	rear	XLR male	output	analog audio	—
OUTPUT LOW RIGHT	rear	XLR male	output	analog audio	—
OUTPUT MID LEFT	rear	XLR male	output	analog audio	—
OUTPUT MID RIGHT	rear	XLR male	output	analog audio	—
OUTPUT HIGH LEFT	rear	XLR male	output	analog audio	—
OUTPUT HIGH RIGHT	rear	XLR male	output	analog audio	—
RTA MIC INPUT	front	XLR female	input	analog audio	—
ETHERNET	rear	RJ45	bidirectional	data	—
IEC AC power inlet	rear	IEC C14	input	power	—
USB	rear	usb b	bidirectional	data	—

Showing 12 of 12 documented physical ports. Scroll to review the remaining rows.

05 · Compare the decision, not just the price.

Alternatives

The rows are organized around fit, power, I/O, and system role so a cheaper unit cannot hide a more expensive workflow.

Compare	dbx DriveRack PA2This gear	Lab.gruppen / Lake LM 44 Loudspeaker Processor	dbx 160A	dbx 266xs Compressor/Gate
Fit	📐 1U	📐 1U	📐 1U · half-rack	📐 1U
Power	⚡ 22W	⚡ 30W	⚡ 12W	⚡ 15W
Weight	⚖️ 5.3 lb	⚖️ 11.0 lb	⚖️ 6.0 lb	⚖️ 4.8 lb
I/O	🔌 12	🔌 13	🔌 4	🔌 11
Estimate	💵 ~$599	💵 ~$5,499	💵 ~$769	💵 ~$280
Deep dive	Current selection	Full comparison →	Full comparison →	Full comparison →

06 · Resolve the questions that can change the purchase or build plan.

Planning questions

Short, source-backed answers surface rack fit, power, cabling, and connection details before they become surprises.

How will the dbx DriveRack PA2 affect rack fit and case depth?

It occupies 1U. Its documented depth is 146 mm.

How much power does the dbx DriveRack PA2 draw?

Typical draw is 22W and documented maximum draw is 22W.

What connections does the dbx DriveRack PA2 have?

12 documented physical ports, including INPUT LEFT/MONO, INPUT RIGHT, OUTPUT LOW LEFT/MONO, OUTPUT LOW RIGHT, OUTPUT MID LEFT, OUTPUT MID RIGHT.

07 · See this unit inside a real rack plan.

Builder preview

Placement is only the start. Builder checks space · depth · weight, power headroom, dependencies, and compatible signal paths around this exact catalog item.Open in Builder

08 · Related gear, in the order you may need it.

System Processor

Lab.gruppen / Lake LM 44 Loudspeaker Processor

1U · 13 ports · ~$5,499

Compressor

dbx 160A

1U · half-rack · 4 ports · ~$769

Compressor

dbx 266xs Compressor/Gate

1U · 11 ports · ~$280

Equalizer

dbx 231s Graphic EQ

2U · 5 ports · ~$300