Tired of floor-ceiling reflections and vertical resonant modes wreaking havoc with your monitor response? You can achieve broadband acoustic improvement using this specially adapted set of TubeTraps designed just for monitors.

The MonitorStand is a broadband absorptive product, built without diffusers unless they are specifically requested.

Our mentality is: “launch a clean wave, and half the acoustic battle is won.”  The MonitorStand arrangement is a quintessential demonstration of this concept.


  • Control Rooms
  • Home Studios
  • Mastering Suites
  • Post Production Facilities
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Studio monitors are nested into a Monitor Stack, comprised of specially built TubeTraps. A typical monitor on a stand is located about half way between the floor and the ceiling. The floor/ceiling bounce returns back to the monitor in a phase. This imposes a phase cancel effect on the speaker’s efficiency, typically, the first cut is 74 Hz for 8’ ceilings, then, the engineer boosts 74 Hz in the mix unnecessarily.

The Monitor Stack upsets the vertical symmetry in the room.

The lower Trap absorbs bass, the upper Trap is short of the ceiling and vents bass. The combination eliminates the phase cancel effect and the engineer works in a linear environment.Whether part of an ASC ATTACK Wall system or in a stand-alone configuration, ASC MonitorStands give you more than just simple support for the physical placement of your monitoring system. The ASC MonitorStand dramatically improves the monitor and room accuracy.

Additional information


11, 13, 16, 20, 24


Quartz, Silver Papier, Gray Mix, Medium Grey, Black


Custom, 30, 42


Base, Top, Monitor Stand Kit

Two types of MonitorStands are used in the construction of your “Monitor Stack”: Tops and Bases.


These are large, structurally reinforced units designed to withstand the weight of today’s self amplified reference loudspeakers.  The absorptive properties are also optimized for the function of eliminating floor-to-ceiling resonance: individually sealed pressure chambers contained within each unit allow for maximized absorption, independent of proximity to the loudspeaker.  Combined with the complimentary IsoThermal upgrade, this provides for extremely rapid damping of vertical energy in the plane of the speaker.


Tops are smaller, and allow the bass wavefront to be mildly absorbed and then rapidly weakened through expansion and diffusion over the top of the stack.  As of 2016, MonitorStand Tops are equipped with an IsoThermal upgrade, nearly doubling their absorbing power below 200 Hz.



  • Base: 30″ and 42″ (42″ is our most common)
    • Note: This is the edge-to-edge dimension, unlike our standard TubeTraps which are 1/2″ longer
  • Top: 18″

This combination works well for the majority of mixing setups, elevating the acoustic center of the reference monitor loudspeaker to be level with the ears of the engineer.


Customizing the height of the Base unit is frequently done to accommodate unusual loudspeaker shapes and sizes.

  • Base max height: 48″
  • Top max height: 24″


Custom Fabric Colors

Any product using our Guilford Stock Fabrics can have one of our 70+ custom fabrics ordered.

Custom Fabric Pricing is 10% additional, minimum $175/order.

  • If your selection is 499.00, the total cost for custom fabric is 499.00+50.00=549.00

Custom fabric does not impact shipping costs or product weight.

We carry many custom colors in our factory, but this is not guaranteed.  Orders requesting custom fabric will require 1-2 weeks lead time based on availability.  Contact us for details and availability.

TubeTrap Endcaps

These are painted gloss black with texture lacquer.



TubeTraps (all variations)


  • Standard TubeTraps products are built taller than the nominal listed height by 1/2″ to 3/4″
  • Maximum available single height for any full-round product is 48 1/2″
  • Custom Sizes under 4′ available


  • All of our TubeTrap products are also ~3/8″ oversize in diameter.

Custom Sizes

These are built within 1/8″ tolerance.

  • A 13 x 3ft TubeTrap will have a diameter of 13 3/8″ and a length of approximately 36 5/8″
  • A 16 x 46″ Custom made TubeTrap, which will have a diameter of 16 3/8″ and a length of 46″ +/- 1/8″

This includes but is not limited to:

  • TubeTraps
  • IsoThermal TubeTraps
  • Quarter Rounds
  • Half Rounds
  • TowerTraps (all variants)

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