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Silentium Knurr AcoustiRACK ACTIVE

AcoustiRACK ACTIVE Soundproof Rackmount Cabinets RangeThe AcoustiRACK ACTIVE range is the only soundproof rack to incorporate Silentium's proprietary Active Noise Control (ANC) technology.

By combining traditional soundproofing techniques with noise cancelling technology spatial noise reduction can be achieved across the entire noise frequency range.

The AcoustiRACK ACTIVE also provides highest levels of thermal dissipation.

Features Overview:

  • Useable Capacity: 15 & 33U rack spaces (physical 24U & 41U)
  • Maximum claimed thermal load: up to 8.0 kW (27,312 BTU/hr) - thermostatically controlled
  • Availability: USA, EU and ROW

The thermal performance of the AcoustiRACK ACTIVE is driven by two fan modules, one located at the top and one at the bottom of the cabinet. These fan modules provide forced air-flow into and out of the rack.

This high performance does come at a cost however. Each fan module populates 4U of height inside the rack, so a total of 8U of useable space is lost within each rack (for example, a 41U rated cabinet is reduced to 33U).


  • Good noise reduction
  • Very high thermal performance


  • Some loss of U space (8U) by fan trays
  • Higher than expected ambient noise

Feedback From Our Global Network:

Exciting high tech, with excellent noise reduction and thermals.

To obtain more information on the right quiet rack for your needs we can arrange for a local quiet rack specialist to contact youlink

Cable Entry Cables enter from the bottom rear of the cabinet. The cable entry aperture measures 255 x 50mm.
Cooling Fans 2 x Silentium Fan modules incorporating Active Noise Control Technology
Security Key lockable front & rear doors
Cabinet Finish Extruded aluminium frame
Doors & panels - heavy duty steel
Cabinet Color Dark Grey - RAL 7021
Cabinet Features 4 post rack - adjustable front and rear
Glass front door
4 x leveling feet
Earthing/grounding kit
Optional Accessories General 19" rackmount accessories
Useable Height Product Code External
15U MARA-15U-1000 47.24" x 23.62" x 39.37"
33U MARA-33U-1000 78.74" x 23.62" x 39.37"
15U MARA-15U-1200 47.24" x 23.62" x 47.24"
33U MARA-33U-1200 78.74" x 23.62" x 47.24"