System Processor

Lab.gruppen / Lake LM 44 Loudspeaker Processor

The Lake LM 44 is the touring-grade loudspeaker system processor — the box that sits between FOH and the amplifier rows, doing crossover, limiting, EQ, alignment delay, and Lake's signature mesh-networked control. Used on top-tier touring rigs (Coachella main stages, arena tours, system tech worlds) where reliability and remote control of dozens of LM units from a single laptop is the gig. Iso-Float ground isolation eliminates loops between FOH and the stage.

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Documented outputs: 44 destination connections
Documented inputs: 7Based on documented inputs
Rack space: 1UBuilder checks available rail space
Power draw: 30W50W documented maximum
Catalog estimate: ~$5,499Use 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 Lake LM 44 is the box that sits between your console outputs and your amplifier inputs and makes the entire loudspeaker system behave like a single engineered thing. Four analog inputs, four analog outputs, AES/EBU digital input, and Lake's mesh networking over dual RJ45 ports — this is a crossover, limiter, FIR/IIR EQ engine, alignment delay, and remote control node all in one 1U chassis. On arena tours and festival main stages, system techs will chain a dozen or more of these across FOH, delays, fills, and stage systems, managing the entire network from one laptop running Lake Controller. That's the world this processor was built for.

Documented outputs: 44 destination connections
Documented inputs: 7Based on documented inputs
Rack space: 1UBuilder checks available rail space

Lab.gruppen / Lake product panel1U · 30W

Function

How it works in the path

In practice at load-in, the dual network ports let you daisy-chain units or build redundant ring topologies without adding a separate managed switch for smaller rigs — that saves real time and real rack space. The Iso-Float ground isolation is not a marketing feature: it actively breaks ground loops between the FOH console and stage amplifier racks, and if you've ever chased a hum through a festival compound at 2am you understand exactly what that's worth. At 30W idle draw and a max of 50W, the LM 44 is thermally gentle, which matters when it's sitting between hot power amps in a packed amp rack. The 360mm depth is substantial, so measure your rack before you commit.

Best fit

Where it earns its place in the rack

If you're running a Lab.gruppen or other Lake-compatible amp ecosystem, or inheriting a rig that already speaks Lake, the LM 44 is the natural and correct answer — it integrates tightly, the processing headroom is real, and remote recall of presets mid-tour is genuinely useful when venues vary. If your rig is smaller, analog-only, and you're not managing multiple zones remotely, the $5,499 price tag is hard to justify against capable alternatives from BSS, Xilica, or Linea Research's own processing options. This is professional touring infrastructure, not a utility processor for a club install or a modest IEM rack.

In the rack

Details worth deciding before load-in.

Use Network Port A for the primary Lake mesh chain and leave Network Port B for a direct laptop connection during system check — you can pull up Lake Controller without interrupting the live network path.
Map Analog Inputs 1–2 to your main PA outputs and Inputs 3–4 to fills or delays from the start; keeping that assignment consistent across dates means any sub covering your show can patch and verify in minutes.
At 360mm deep, confirm your rack's usable internal depth before packing — shallow road cases will require a rear-mount shelf or the unit will hang unsupported past the rack ears.
Save a 'flat' baseline preset on every unit before the first show; if a limiter threshold or delay value gets changed during a panicked line-check, you can restore the vetted system tune in one recall rather than rebuilding from notes.

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

7 documented inputs

XLR female + aes3 xlr

Arrives as: 7 documented inputs
Connector: XLR female + aes3 xlr
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 360 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, aes3 xlr, XLR male, RJ45. 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 Lab.gruppen / Lake LM 44 Loudspeaker Processor
Port	Panel	Connector	Direction	Signal	Channels
Analog In 1 (XLR)	rear	XLR female	input	analog audio	—
Analog In 2 (XLR)	rear	XLR female	input	analog audio	—
Analog In 3 (XLR)	rear	XLR female	input	analog audio	—
Analog In 4 (XLR)	rear	XLR female	input	analog audio	—
AES/EBU In 1	rear	aes3 xlr	input	digital audio	—
AES/EBU In 2	rear	aes3 xlr	input	digital audio	—
Analog Out 1 (XLR)	rear	XLR male	output	analog audio	—
Analog Out 2 (XLR)	rear	XLR male	output	analog audio	—
Analog Out 3 (XLR)	rear	XLR male	output	analog audio	—
Analog Out 4 (XLR)	rear	XLR male	output	analog audio	—
Lake Network A (RJ45)	rear	RJ45	bidirectional	data	—
Lake Network B (RJ45)	rear	RJ45	bidirectional	data	—
Power (IEC)	rear	IEC C14	input	power	—

Showing 13 of 13 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	Lab.gruppen / Lake LM 44 Loudspeaker ProcessorThis gear	dbx DriveRack PA2
Fit	📐 1U	📐 1U
Power	⚡ 30W	⚡ 22W
Weight	⚖️ 11.0 lb	⚖️ 5.3 lb
I/O	🔌 13	🔌 12
Estimate	💵 ~$5,499	💵 ~$599
Deep dive	Current selection	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 Lab.gruppen / Lake LM 44 Loudspeaker Processor affect rack fit and case depth?

It occupies 1U. Its documented depth is 360 mm.

How much power does the Lab.gruppen / Lake LM 44 Loudspeaker Processor draw?

Typical draw is 30W and documented maximum draw is 50W.

What connections does the Lab.gruppen / Lake LM 44 Loudspeaker Processor have?

13 documented physical ports, including Analog In 1 (XLR), Analog In 2 (XLR), Analog In 3 (XLR), Analog In 4 (XLR), AES/EBU In 1, AES/EBU In 2.

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

dbx DriveRack PA2

1U · 12 ports · ~$599