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Black vinyl cube subwoofer with front grille and app control

Elac

Elac Varro Premium PS250-BK 10" 250W subwoofer (2023)

SKU CH-5N1R-ZG6XB

A 10 inch subwoofer with 250W BASH amplification, 24Hz-150Hz response and app-based auto EQ for room correction

  • Sales unitSingle
  • Frequency range24 Hz-150 Hz
  • Connection typesRCA Line Level, Speaker Level, USB
  • Power supplyAC
  • Size and weight36.16
  • Product typeSubwoofer
  • Deep bass down to 24 Hz with 250 W continuous power
  • Automatic room EQ via Sub Control 3.0 app and smartphone mic
  • 28-bit DSP at 147 MHz clock for precise low-latency processing
  • Treated paper cone with 2-inch voice coil handles high excursion
  • BASH amplifier switches at 400,000 times per second for high efficiency

Varro Premium 10-inch subwoofer

The Elac PS250-BK is a powered subwoofer designed for home cinema and stereo systems that need deep bass extension down to 24Hz. It uses a 10-inch treated paper cone driver with a 2-inch voice coil and high-excursion surround inside a bass-reflex MDF cabinet. A 28-bit DSP running on a 147MHz master clock manages crossover and room EQ.

Sustained output with BASH amplification

The BASH amplifier tracks the audio signal at over 400,000 switching cycles per second, supplying the Class AB stage with only the voltage it needs plus headroom. This design maintains efficiency during long movie passages or music sessions, delivering 250W continuous and 500W peak power without thermal compression. The large voice coil and internal cross-bracing further support consistent high SPL at 107dB sensitivity.

App-guided setup with flexible inputs

The Sub Control 3.0 app uses your smartphone microphone to run automatic room EQ, letting you place the subwoofer where it fits rather than where it measures best. RCA line-level, speaker-level and USB connections cover most AV receivers and stereo amps. The grille, power cord and floor spikes are included; the only common issue is forgetting to enable the auto-on signal sensing after the first calibration.

How it compares

Measured against everything we stock in Home Speakers & Subwoofers, at today’s prices. Recalculated every night.

Price $1,021.99
Pricier than about 93% of the 1,147 comparable items (median $133.99).

Specifications

Product
Brand nameELAC
Product lineVarro Premium
Model namePS250-BK
Product typeSubwoofer
Product colorBlack
Audio & video
Frequency range24 Hz-150 Hz
Ports & slots
Connection typesRCA Line Level, Speaker Level, USB
Power
Power supplyAC
Size & build
Size and weight36.16
In the box
Sales unitSingle

Questions about this item

How much heat and power does the 250W BASH amplifier draw during long movie sessions?

The BASH supply switches at over 400000 times per second, delivering only the voltage the 250W Class AB amp needs plus headroom, which maximises efficiency and keeps heat low during extended use.

What source gear must I already have to connect the PS250-BK?

You need a receiver or preamp with either an RCA line-level sub output or speaker-level outputs; the sub also includes a USB port for the Sub Control 3.0 app.

Will the 28-bit DSP and auto-EQ integrate cleanly with my older stereo amplifier?

Yes, the 28-bit DSP running on a 147mHz clock processes the signal from RCA or speaker-level inputs, and the app-driven auto-EQ corrects room response regardless of the connected amplifier's age.

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