Portable Acoustic Recording Studio



StudioTrap Assembly Video
Assembly Troubleshooting Video

What Exactly are StudioTraps?

StudioTraps are cylindrical broadband passive sound absorbers with a built-in treble range diffuser covering half the cylinder. Used by renowned music producers, mixing engineers, and artists in the studio. Standing on a tripod, StudioTraps are height adjustable from 4 feet to 6 feet tall. You can quickly modify the diffusion characteristics in order to create the exact soundspace you need at that time. The fact that these are so light in weight makes them easy to move around the room, down the hall, or around the world. These innovative acoustic columns provide a multitude of uses in the recording studio.

All You Need is 8 and You Are on Your Way to Create!

With a starter pack of 8 StudioTraps, you do not need to build a recording studio or halt production because of ongoing construction. With StudioTraps you do not need to construct a vocal booth either.

Simply surround the talent with 8 StudioTraps to form a Quick Sound Field, an acoustic chamber free of room resonance and early reflections.  Mic up the talent, hit record and begin tracking your vocals, guitars, drums, violins, sax, trombone, harmonica, tambourine, accordion, you name it-even a hurdy-gurdy!

An Integral Part of the Organic Recording Process

From recording to mixdown, the StudioTrap is an integral part of the organic recording process

When you are done tracking you can move the StudioTraps beside your monitors to build a AttackWall, to form a clear and balanced mixing environment free of early reflections. With a set of 8 studio traps placed behind your digital audio workstation, making choices and making adjustments to levels behind the mixing board is simplified.

StudioTraps are fundamental components of the AttackWall and the Quick Sound Field, two world-class mixing and recording environments championed by recording legend Bruce Swedien.

StudioTraps are fully fiber-sealed in acoustically transparent micromesh. Their unique characteristics make them powerful and versatile tools for use throughout all aspects of the recording process. Your ears will certainly tell you that the traps are working. StudioTraps are not only broadband sound absorbers, but also provide the broadest band of diffusion of any TubeTrap product.

The result is a more defined and natural sound delivered to your ears. StudioTraps ship 2 in a box with built-in stands to adjust height as needed, and color can be chosen to match nearly any room decor.

New StudioTraps Interactive Website!

We have built a new interactive website, complete with before and after recordings, to help people in the music recording industry get a better idea of how StudioTraps can be used in all facets of recording to achieve the perfect mix!

Visit StudioTraps Interactive Website »
(Link opens a new window)

Or You Can Read It All Here...Eight Is Great!

You don’t have to build a studio to achieve professional sounding tracks and mixes. All you need is a set of 8 StudioTraps to cover all the acoustic aspects of your recording and production process.


Portable Drum Studio Acoustic Recording Products

“Before, the dynamics were buried in room bleed. Now my drum tracks sound tight and clear as if they were recorded in a real live room”

Capture the true character of your instrument's sound anywhere, eliminate early reflections interfering with your creative workflow, without the use of a live room.


Portable Acoustic Vocal Booth Recording Studio Traps

“The mic used to sound like it was trapped inside the vocal booth, nasally and dead. Now the tracks are loaded with vocal texture, open, clear, and concise!”

Capture the vocalist in a perfectly clear sonic space so you can achieve vocal clarity to match your vision...without the construction of a vocal booth!


Portable Mixing Studio Acoustic Studio Products

“Before I was struggling, I could not get the mixes to sound right. Now I get focused, palpable sonic image right in front of me, stable volume levels and crystal clear dynamics”

Mix down your music in a perfectly clear mixing environment...without a control room!


  • Vocal Recording
  • Instrument Recording
  • Live show stage isolation
  • Mixing
  • Mastering
  • Room tuning

New Travel Bag Now Available

After all these years, ASC has finally come up with a nifty nylon carrying bag for our famous StudioTrap. For folks with the Quick Sound Field setup or anyone with StudioTraps, this bag makes portability a snap. It's also a great way to store your Traps and keep dust and dirt out.

It's a slipcover with a convenient carry handle, placed to perfectly balance the StudioTrap when lifted into a horizontal position. We used durable 240 oz. black coated Cordura nylon fabric and super tough nylon webbing for the handles. Plus it comes with a drawstring at the base to keep the cover from slipping off during transport.

If you do a lot of travel and don't want to leave your StudioTraps at home, consider picking up some travel bags, bargain priced. Contact us for details. Made in the USA.

How It Works

Half of the StudioTrap body is treble diffusive which provides a a bright backscatter for frequencies above approx 800 Hz. The other half of the body is broadband absorptive, maintaining 50% efficiency all the way down to 110 Hz.  As with all TubeTrap products, the bass trapping occurs through the action of an acoustic RC circuit which operates nearly instantaneously, providing control of sonic events all the way through the ADSR envelope without coloring the timbre or tone.

As used in an AttackWall, the characteristic impedance of the StudioTrap's inner material allows it to partially absorb and partially vent low frequency energy emanating from the loudspeakers.  The "impedance walls" created by several StudioTraps arrayed together allow the operating frequency to extend well into the subwoofer range, where energy dissipation and diffusion both occur.

When arranged in a QuickSoundField layout, each StudioTrap is oriented with its diffusive face (indicated by the bright shiny button) toward the microphone and talent.  The most common QSF size (8 StudioTraps in a horseshoe pattern) provides an extraordinarily dense sequence of early reflections in the "presence" tonal range.  Thousands of reflections arrive at the microphone within the Haas window, strengthening the direct signal, while the absorptive outer faces of the StudioTraps reduce the reverberant noise.  This improved S/N ratio allows greater mobility of the performer during recording (such as a singer dancing, or a saxophonist reeling up and down) without compromising the quality of the track.


Each unit measures 9 1/2" diameter and can extend from a height of 54” to 74”.  For the engineer on-the-go, StudioTrap carrying bags are available by special order (800) ASC TUBE.



Information Coming Soon.


Related Articles And Reviews

ASC StudioTrap Review
- By Mitch Malloy for Performing Songwriter (PDF)

Follow Up Report
-By Fett for Performing Songwriter (PDF)

The Trappings Of Success?
Reprinted from the original Sound on Sound review from February 1999. (PDF)

Acoustic Sciences Corporation Studio Traps
Stereophile Magazine - Reprinted from December 1998. (PDF)



StudioTrap 9" x 54" (height adjustable to 74")      $589 each

StudioTraps are shipped 2 per box.