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Thread: Psi avaa c20

  1. #1
    Senior Member
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    Jan 2014
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    Psi avaa c20

    My room is square - 20' X 20' X 9'. Those that understand acoustics, room setup principles and bass resonance, will immediately understand the difficulty I have in getting the low end 'right'. On the suggestion of Jim Smith, I moved to a 45 degree offset setup which helped greatly. GIK and Vicoustic bass traps have also helped some. However, there remains an emphasis in the low end that finds it way into the upper bass regions. Enter the PSI AVAA C20.

    The technology makes all the sense in the world to me and has recently been given the stamp of approval by Tom Martin. https://youtu.be/p2AgRNUdp7E?si=sX1kVXcEzKuwyPLF

    I also spoke to a few other long time and respected audio hobbyists who could not speak highly enough about these products. While not cheap, I decided to jump in and purchase two.

    Given my room setup, I put one each in the corners behind and between the speakers and my listening position. By my months of measuring and listening, I knew they were both areas of high bass pressure.

    Setup is no more difficult than finding those areas of high bass pressure plugging them in and turning them on. They are set to a calibrated level from the factory but you can adjust if needed. I did not.

    Doing A/B is as easy as turning them on and off. Their effect is immediate and in my case, highly beneficial. I could hear and 'feel' the effect using my reference recordings. Those that have substantial low end, sounded better. Those that didn't (think Eva Cassidy type music) were not affected in any way.

    After convincing myself I could hear a positive impact I then set about testing the system with and without them using REW.

    Here are my results.

    Averaging the left and right speakers measurements there is a 2 dB reduction in the 25 Hz to 32 Hz region.

    The water fall graphs clearly show the beneficial impact of the PSI AVAA C20s.
    Attached Files Attached Files
    Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2, Block Audio Line & Mono SE Amplification, Bricasti M21 DAC, Antipodes Kala K-50 Server, ClearAudio Performance SE, Satisfy Arm & Maestro Wood MM Cartridge
    Power: 3 x 20 Amp Lines, Shunyata Everest 8000, Sigma XC v2, Shunyata Sigma v2 NR, Block Audio Power Cords, Defender, ADDPowr Wizard
    Grounding: Shunyata Altaira CGS - Alpha CGS cables
    Network : Supra Cat 8+, Twin (Nenon Modified) Buffalo GS2016 Switches powered with Keces P3 LPSU,
    Cables: Wireworld Platinum Starlight 8 USB, Wireworld Platinum Eclipse 8 SCs, 1M & 6M Tubulus Concentus ICs,
    Other: Twin PSI Audio AVAA C20, Isoacoustics GAIA I footers on Kharmas, GIK/Vicoustics/Stillpoint Apertures, Stillpoint Ultra SS, Furutech GTX - Gold outlets, Adona Rack

  2. #2
    Audioshark
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    Apr 2013
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    Re: Psi avaa c20

    Active bass traps like AVAA’s are great,


    Sent from my iPhone using Tapatalk Pro
    My Systems: http://www.audioshark.org/showthread...481#post158481

    "We can hear everything we measure, but we can't measure everything we hear. Let your ears be your guide."

    Dealer for: Aqua Hi-Fi, Aurender, AudioQuest Cables & Power Products, Berkeley Audio, Block Audio (distributor), Boulder Amplifiers, Bowers & Wilkins (B&W), Bryston, Clarisys Audio Loudspeakers (distributor), Classe’ Audio, Degritter Record Cleaning Machines, Esoteric, Finite Elemente, FirstWatt, Focal Loudspeakers and Headphones, GigaFoil, Harbeth Loudspeakers, Hegel, HiFi Man, Innuos, ISO Acoustics, Keces Power Supplies, Kharma Loudspeakers and Electronics, Kuzma Turntables, Lumin, Luxman, Magico Loudspeakers, MBL Speakers & Electronics, MSB Technologies, MySonicLabs Phono Cartridges, Nordost Cables, Ortofon, Pass Labs, Quadraspire, Rega Turntables and Electronics, Shunyata Research, STAX, Stein Music Products, Stillpoints, Soulution, VAC, Vicoustics, Viva Audio, VPI Industries, WireWorld Cables.

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  3. #3
    Senior Member
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    Nov 2017
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    Greenville SC
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    Re: Psi avaa c20

    Congratulations, Craig!

    Sent from my SM-G998U using Tapatalk
    Legacy Audio Valor+Wavelet v2, Esoteric S-02 Amps HDPlex 300W, RevAudio Labs DC Umbilical, Esoteric Grandioso P1, P1PSU & dual D1 DACs, Cybershaft Prem Ltd OP21A 10 MHz Clock, Esoteric C-02X, Shunyata Everest 8000, Typhon T2_30amp, Altaira SG-NR hubs, Sigma SGC/CGC ground cables, VTX-Ag ground tails, AfterBurner8 duplexes, CSP Inc Q4B, S2B IEC plates, Shunyata Omega CLOCK-50 cables, Tubulus Concentus HDMI, Elrod Master Series Diamond SE & Masters Series Gold Power cords and Statement Gold XLRs, Diamond XLRs & Master Series Diamond XLRs, AudioArts eStatement pcs, Anaconda Z-tron XLR, Elrod Statement Gold speaker cables, Adona Zero GX Racks Composite Audio CF-2010, Townshend Audio Podiums, HRS DPX Damping Plates, Stillpoints Ultra SS w/Ultra Bases, pArtScience 64-well, 2D QRD 3-inch SpaceArray Diffusors

    Travel/Rip: Apple MacBook Pro 16” 2023 M2 Max, 12-core CPU, 38-core GPU, 32 GB RAM, 1 TB SSD for Audirvana+ v3, iTunes, REW Audio Analyzer, dbPowerAmp, DVD Audio Extractor

  4. #4
    Senior Member
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    Jul 2019
    Location
    Israel
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    Re: Psi avaa c20

    Quote Originally Posted by Mike View Post
    Active bass traps like AVAA’s are great,


    Sent from my iPhone using Tapatalk Pro
    Exactly 👍

  5. #5
    Senior Member
    Join Date
    Jul 2013
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    Florida
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    3,862

    Re: Psi avaa c20

    Glad they are making a positive difference.
    _______________

    Mike

    Amplification: MBL 6010D, MBL 9008A Monos
    Analog: Kuzma R, Kuzma 4Point (11”), MSL Ultra Eminent EX
    Phono Pre: Pass XP-27
    Digital: Esoteric N01XD Esoteric K05
    Speakers: MBL 101E MKII
    Subwoofers: REL Carbon Specials
    Conditioner: Shunyata Triton 3
    Power Cables: AQ Dragon, Shunyata Alpha NR V2, Delta and Venom
    ICs and SCs: Wireworld Platinum 8
    Rack: Artesania Exoteryc

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Psi avaa c20

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