PSW350 doesn't auto off?

wjbertrand
wjbertrand Posts: 11
edited January 2002 in Technical/Setup
I just bought and installed a PSW350 yesterday for my home theater system. I have the power switch set to automatic so that the amplifier inside the
unit would turn off autimatically when my system is turned off. I used option #2 connecting the subwoofer out line on my receiver to the LFE input
on the PSW350.

This morning, after my system had been off for about 8 hours, I could hear a low 60Hz hum coming from the PSW350's speaker when I put my ear right up to it. This hum stopped when I shut off the surge protector that I have the
unit plugged into.

Why didn't my unit turn itself off by itself like it is supposed to? Is that 60Hz hum creating enough of a signal to keep the unit turned on? I will try re-routing the RCA cord that goes into the LFE input but my options are limited. Is there a recommended cable that I should be using? Right now I'm using a standard audio/video type RCA cable and I don't know if it's shielded
or not. Would sheilding help?

Could there be something wrong with my new unit? Thanks.

Jeff Bertrand
-Jeff
Post edited by wjbertrand on
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Comments

  • TroyD
    TroyD Posts: 13,077
    edited January 2002
    I would try a shielded subwoofer cable, that could be the problem.

    Troy
    I plan for the future. - F1Nut
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  • ntculenuff
    ntculenuff Posts: 1,146
    edited January 2002
    sounds like it might be a bad cable
    i second the shielded
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  • danger boy
    danger boy Posts: 15,722
    edited January 2002
    I would go sheilded too.. buy a cable designed for subwoofers... I bought one sheilded for about $40, it's 6 meters long.
    PolkFest 2012, who's going>?
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  • wjbertrand
    wjbertrand Posts: 11
    edited January 2002
    Well, sorry to post a reply to my own post but I have an update. I discovered the reason that my SW didn't power down was because the selector switch was in the wrong position. I didn't realize it was a 3 position switch, the center position being the auto on/off one I think - the instructions aren't clear on this. With the switch in the center position the power LED glows gree when a signal is present, and turns red after a few minutes with no signal. I think this is the correct behavior.

    I also took everyone's advice (thanks!) and ran a super duper "Gold Series" shielded audio cable between my receiver and the LFE input on the SW. I swear it sounds better when playing music now but I can still hear a low hum with my ear right in front of the driver after the auto off fuction presumably kicks in and the rear panel LED has turned red. If I flip the switch into the "off" position the hum stops even as the LED remains lit red. Is this normal? Thanks,

    -Jeff
    -Jeff
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  • ntculenuff
    ntculenuff Posts: 1,146
    edited January 2002
    maybe try a diff outlet. you might be getting some wierd feed back from your power source ??
    turn the sub volume down thru the rcvr if you have that turned up ??
    definitly not normal
    Speakers:
    Definitive BP7001sc mains
    Definitive C/L/R 3000 center
    Polk RT800i's rears
    Definitive supercube I Sub
    Audio:
    Onkyo TX-NR3010
    Emotiva XPA five Gen 3
    OPPO BDP-103 CD, SACD, DVD-A
    Video:
    Panasonic TC-P65ZT60
    OPPO BDP-103 Bluray
    Directv x's 2
    · Share on FacebookShare on Twitter