Innovative PSB CSIR SUB Is Now Shipping

in-room passive subwoofer

ISE 2020, AMSTERDAM, NL, FEBRUARY 10, 2020  – PSB Speakers, long renowned for affordable excellence in loudspeaker design, announced the immediate availability of its flexible CSIR SUB ($1299 U.S MSRP). The CSIR SUB In-Room Passive Subwoofer, previewed at CEDIA 2019 in Denver, is now available in both Black and White finishes. The clever sub offers several highly versatile and elegant mounting solutions to satisfy most any application. Moreover, It can disappear into the décor of any room yet is stylish enough to be a design feature on its own. 

Measuring a mere 15 3/4” x 15 3/4” x 4 3/4”, the CSIR SUB can be used in 3 distinct ways – standing up on its narrow, low profile plinth and placed upright, set on its back allowing it to be tucked out of the way, behind or under furniture or wall-mounted (bracket included) to maximize floor space. The 10“, high-performance shallow driver offers deep and resonant bass, well beyond what one would expect. The CSIR SUB is ideally matched with PSB’s new CS 500W subwoofer amplifier. 


To make implementation even easier, PSB has developed a complementary subwoofer amplifier (CS 500W) to power up to two subwoofers simultaneously. All three subwoofer models are voiced to deliver tight, detailed bass response and are comfortable reproducing the most demanding home theatre and music tracks.

This digital 500 watt subwoofer amplifier delivers ample power for up to two PSB subwoofers in parallel. The DSP is capable of being calibrated to several selectable eq settings as well as containing profiles tailored for the PSB subwoofers. A built-in limiter circuit filters the incoming information and keeps it from driving the subwoofer beyond safe operating parameters. It can be powered up by several means including signal sensing and 12volt trigger. A rack mount kit enables the subwoofer amp to be mounted into a 1U rack space.

An important enhancement has just been added to the CSIR. IsoAcoustics Isolators. The integrated IsoAcoustics isolators are based on the award-winning GAIA series to manage energy and provide a high level of isolation for audio speakers over the entire audio spectrum. The isolators significantly reduce the transfer of resonant energy from the speaker to the supporting surface and prevents them from reflecting off the surface below and being conducted back up into the speaker enclosure. The isolators are directional and are aligned with the speaker’s drivers to provide greater clarity and focus. IsoAcoustics innovative isolation design enhances the listener’s overall experience by allowing speakers to perform at their best.

“Along with our other CS Subs, the new PSB CSIR SUB and its dedicated Amplifier, offer the professional system designer multiple design and application options for serious low frequency performance.” commented Joe de Jesus, Lenbrook’s Product Manager for Custom Installation. “Our goal has been to create a powerful sub amplifier that can drive up to two of the new models at a time and, with a set of pre-calibrations for each of our subwoofers, ensure a much more seamless blend. The subwoofer application will inherently take less time to deploy and be considerably tighter and more precise. Tremendous synergy at work here with our new subs and amplifier.”

Like all PSB speakers, final voicing is performed by Founder and Chief Designer, Paul Barton, at Canada’s famed National Research Council. PSB’s research has discovered how listener preferences can be integrated into a wide range of speaker designs for many different applications, yet all featuring consistent sound quality that is natural and lifelike.

All the new PSB Architectural Subs and CS 500W amplifier will be on display at ISE Amsterdam February 11-14 in the Lenbrook Booth 5T140. Lenbrook’s other fine brands, NAD and Bluesound, will also be on display with company personnel on hand to provide demonstrations and answer questions.

Key Features of the PSB CS IR Sub:

  • Differentiated designs to cover a wide range of applications 
  • 3 Placement Options –  On-Wall with supplied mounting bracket 
  • On-Floor with supplied base 
  • Laid on its back for under or behind furniture placement 
  • Slim 10” Passive woofer with Glass fibre / PMI foam sandwich cone, dual rubber surround 
  • IsoAcoustics Isolators for reducing unwanted resonance and vibration 
  • Dedicated amplifier CS 500that can easily drive two of new models simultaneously 
  • CS 500W is only 1U rack space high  
  • Designed and voiced by the growing PSB design team mentored by PSB founder and speaker industry icon, Paul Barton

About PSB Speakers

Founded in 1972, by renowned speaker designer Paul Barton, PSB is a leading global speaker brand, now celebrating more than 40 years. Currently sold in more than 70 countries around the world, for music or movie listening, the company has set the standard for high-performance, high-value speakers. PSB products are distributed in the U.S. by Lenbrook America.  

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Mark Stone
Manager, Distributor and Dealer Relations
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U.K. Media Relations: 

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