Polk psw505 tweaking

Polk psw505 port noise!
So I have a decent theater room all setup. Room size is 16 x 25. I am currently running Polk monitor 60s for my fronts , Polk monitor cs2 as my center , Polk monitor 40s for front height , Polk monitor 40s for rears , and two Polk psw505 subs all powerd by a Denon avr s920w. I love it . But my issue is I watched mad Max fury road last night which was amazing but there were times where my subs port noise made me feel like I had cheap subs. Was curious how i can fix this without loosing performance. My subs are roughly 2 feet from the back wall. Which made a difference in performance but I need that noise to stop. Any ideas? Should I set fronts to large and adjust the crossover differently so I can turn the volume down a tad on the sub?

My subs are currently set up with the following.
Crossover set to 120 because of lfe (lfe+main on amp) volume is set right in the middle.

Comments

  • F1nutF1nut Posts: 40,192
    Crossover to subs set at 80Hz, all speakers set to small.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • F1nutF1nut Posts: 40,192
    You also have to consider the PSW505 has a -3dB point of 35 Hz, which means you are missing a lot of the LFE track in movies. It also means the sub cannot handle those low frequencies, so what you describe as port noise is likely to have been the woofers bottoming out.

    Bottom line, you need better subs.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • polk4liffepolk4liffe Posts: 3
    Please explain the -3db point @ 35hz .
  • F1nutF1nut Posts: 40,192
    It means the sub has no worthwhile output below 35Hz. Ideally, for a HT sub you'd like to be close to 20Hz.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • MilitoMilito Posts: 79
    edited July 1
    I have a psw505 and like F1nut said above, it leaves a lot to be desired as far as HT. I also run my crossover set to 80Hz like he recommends. I use to have Monitor S60's and a cs2 center also, but didn't have a surround setup. I tried higher crossover settings up to 100Hz and it didn't sound as good as it did at 80Hz.

    I hopefully plan to upgrade my sub by the end of the year and sell my psw505.
  • polk4liffepolk4liffe Posts: 3
    It sounds amazing set at 120hz until it drops and the port noise is awful. Sadly I just purchased a second psw505 . I was debating between a second one 505 or buying the Bic pl200-ii. Now I'm left wondering if I should just return this sub and look for something that will hit the lows properly. I did however set the sub to 80hz and watched mad Max fury road again and there was a huge difference. The port noise was non existent however the punch I had before just wasn't there.
  • honestaquarianhonestaquarian Posts: 1,971
    Living room Home theater: Upgrade Company modified Onkyo PR-SC5509,Sunfire Cinema grand Signature 5 channel amp(1st gen),Carver TFM-45,Carver M-400a,Panasonic TC-P50ST60 50" Plasma(last gen before Plasma production stopped)Pioneer Elite DVL-91,Meridian 519 Dolby AC-3 RF Demodulator,Oppo Digital UDP-205,TiVo Bolt VOX,Nakamich BX-300,Technics SL-1200MKII,Shure V15 Type VxMR cartridge,Polk SDA-SRS 3.1 TL(with RD-0198 tweeters, upgraded with Larry's rings, black hole5,an Avel-Lindberg 1000VA isolation transformer, VR3 customer crossovers and internal wiring),Polk CS-1000P(with SL-6506 tweeter),Polk Monitor 5jr(with RD-0194 tweeters),Polk RT-35i (1),Polk Mini Monitors,Polk PSW150(4)Monster Power HTPS 7000 MKII Signature series,Monster Power AVS 2000 Signature Series,Various MIT,Monster,Upgrade Company and Belden interconnect,power,HDMI,Coax and Toslink Digital and speaker cables.

    Bedroom 2 channel system:Integra DTM 40.4,Nakamichi BX-100,TiVo mini,Musical Fidelity X-LPS,X-PSU,Carver TFM-25,Sony KV-34XBR970(last of the widescreen tube sets before production stopped)Technics SL-1200MKII,Shure V15 Type V MR cartridge,Polk RT-55(with SL-6506 tweeters),Polk PSW-200 in plexiglass(2),Sony Playstation 3 slim.Monster Power HTPS-7000,Monster AVS-2000, PowerVarious Kimber,Audioquest and MIT interconnects and speaker cables.
  • tonybtonyb Posts: 29,554
    polk4liffe wrote: »
    It sounds amazing set at 120hz until it drops and the port noise is awful. Sadly I just purchased a second psw505 . I was debating between a second one 505 or buying the Bic pl200-ii. Now I'm left wondering if I should just return this sub and look for something that will hit the lows properly. I did however set the sub to 80hz and watched mad Max fury road again and there was a huge difference. The port noise was non existent however the punch I had before just wasn't there.

    As already stated, the port noise was because you were asking the sub to do more than what it's capable of.

    Also, make sure your either using the crossover on the back of the sub, or the one in the receiver, not both. If your using the one in the receiver, turn the one on the back of the sub to it's highest value.
    HT SYSTEM-
    Pioneer elite vhx 21
    Sony 4k BRP
    Tad 803 bookies
    Polk 500 surrounds
    Polk s35 center
    SVS SB-2000
    Sonos

    Music-

    Joule la-100 pre
    B&k 1403 amp
    Cary xciter dac
    Cullen modded Sonos
    ERA D5 bookies

    Cables-
    Acoustic zen Satori speaker cables
    Analysis plus crystal oval ic's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable
  • rooftop59rooftop59 Posts: 4,454
    https://hometheaterhifi.com/volume_12_2/polk-psw-505-subwoofer-4-2005.html

    Test bench measurements has in [email protected], but in room basically flat to 25hz. Obviously ones room will make a bi difference, but two should give you decent output in the mid 20s. But crossing over at 120 is asking way too much, and the lfe in that movie is intense and low. The combination equals bad sounds...

    If you can return it, do so and save up for an SVS or HSU.
    HT Rig:
    Denon AVR-X4200w; Parasound HCA-1205A; Arcam rDac; Mains: Dynaudio Emit 10 + MartinLogan Dynamo (original) sub; Center - Def Tech Procenter 1000; Heights, Center Surround - Klipsch KHC - 6 In-Ceiling; Surrounds - Monoprice in-ceiling; Sub - SVS PB10-ISD; Sony BDP-S390, FireTV gen 2

    Master Bedroom
    Marantz SR-5007; Audiosource Amp Two, PSB Imagine Mini, Boston VR-10 center, NHT Super One CI surrounds, ACI Titan subwoofer, FireTV, Arcam rDac; Bryson BPD-1
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