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  1. #1

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    Default electricity, the static kind

    Hello guys,
    This question always bounched around and now this seems to be the place to answer it. It being static electricity and what effects if any does it pose to ones gear. We've already discussed that there is no need for 3 prong plugs
    to help w/ ground but most people don't ground their systems to begin with.So for me as cross my carpet to turn on my 2-ch gear I do usually get a
    shock and sometimes a visable arc. Nothing indurious happens and everything turns on and works fine. So can this lead to problem or am I just getting a little paranoid.Also if in fact there is a problem here what are the reamadies barring taking out the carpet.......LW

  2. #2

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    We have extremely low humidty is S Az, so static is a constant problem. I get zapped everytime I touch my Benchmark's volume knob. I don't think it's a hazard of any kind, more of a minor PITA.

    Source: Squeezebox Touch/CIA Power Supply
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    It's gotta do SOME damage if your gear isn't well-designed, but I would hope the higher-end stuff you guys all use would be smart enough to handle it.

    I"ve had computers SHUT OFF before from static shock through the keyboard (PS/2... USB is a lot smarter). That's always fun.
    If you will it, dude, it is no dream.

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    Static electricity of the kind mentioned here WILL take out delicate electronics as in microprocessors, etc. My brother had it happen to the volume control on his BAT pre-amp.

    I'd find a way to minimize it such as discharging on your rack, etc rather than the equipment.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

  5. #5

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    Quote Originally Posted by bobman1235 View Post
    It's gotta do SOME damage if your gear isn't well-designed, but I would hope the higher-end stuff you guys all use would be smart enough to handle it.

    I"ve had computers SHUT OFF before from static shock through the keyboard (PS/2... USB is a lot smarter). That's always fun.

    You could always install a grounding strap and wristband next to your rig - ground it to a chassis screw someplace. Then when you go to operate your rig - put the grounding wristband on first :tongue:

    We are required to have these at work anytime we work on computers or other electronic devices in the labs.

    H9: If you don't trust what you are hearing, then maybe you need to be less invested in a hobby which all the pleasure comes from listening to music.

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    I had a BAT VK-3i pre amp that I blew the volume control out with a static shock on the volume knob (after handling a vinyl record). BAT implemented static discharge protection upon repair, which I presume was better internal grounding of the front panel. I never took the chance to find out and got in the habit of grounding myself before touching any gear. A wall switch cover screw did that for me, or part of the chassis (not a control).

    We use a built in furnace humidifier in winter. I can still get static charged handling/dry brushing vinyl. I read that wiping softener sheets on things prevents shock, but never tried it. Nor do I know what you are rubbing 'on' or possibly 'off' using them. They might scratch gear though.

    EDIT: No, I am not Brock's (heiney9) brother.:tongue: Just a friend.
    Last edited by SCompRacer; 03-09-2011 at 12:03 PM.
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    Quote Originally Posted by Erik Tracy View Post
    You could always install a grounding strap and wristband next to your rig - ground it to a chassis screw someplace. Then when you go to operate your rig - put the grounding wristband on first :tongue:

    We are required to have these at work anytime we work on computers or other electronic devices in the labs.
    Ditto, though we had the grounded floors put in a few years back so we can wear footstraps too, which is nice.
    If you will it, dude, it is no dream.

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    Quote Originally Posted by SCompRacer View Post

    EDIT: No, I am not Brock's (heiney9) brother.:tongue: Just a friend.
    Come on Rich...........would that be so bad?

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

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    Quote Originally Posted by heiney9 View Post
    Come on Rich...........would that be so bad?

    H9
    Just kidding. Couldn't resist the chance to be a smart ass.
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    nice response, Yes in most electrical assemply lines people are grouned and all are discharged before touching the pcb . But in a home audio case it seems not to much can be done and it also appears that damage has accurred on certain gear so this is a potential threat not a blind post to which I'm happy,learning on the go seems the way here. Sometimes you get an answer and then others just either rants w/ no help at all. Thanks for the response, it can be a PROBLEM......LW

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    I get it all the time,, it has never seemed to harm my gear,, usually when i turn up the volume knob,, a small shock,, good post, cause i often wondered the same thing,,
    Not an Audiophile, just a dude who loves music, and decent gear to hear it with.

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    Great reason for remote controls...
    More later,
    Tour...
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    Yes, TOUR2A it does seem to be the way to go here. but my pre-Onkyo P301 has no
    remote and dos limit it'a fun typ3 .N

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    Somebody buy me the "HDR" version Benchmark, will ya?

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  15. #15

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    Quote Originally Posted by heiney9 View Post
    I'd find a way to minimize it such as discharging on your rack, etc rather than the equipment.
    Discharge on a rack, eh?

    (How did you guys let this one slip by?)

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    Quote Originally Posted by unc2701 View Post
    Discharge on a rack, eh?

    (How did you guys let this one slip by?)
    Ok, rack wasn't a great choice of words. I don't have a rack per se, but a wooden lowboy type unit. I discharge on the wooden lowboy unit when conditions are really dry in the Winter. Generally I don't have static issues.

    Is that better?

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

  17. #17

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    Put your mind in the gutter and read that again.
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  18. #18

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    Quote Originally Posted by unc2701 View Post
    Put your mind in the gutter and read that again.
    :tongue::tongue::tongue:

    I just now got that!

    Freakin' hilarious.........we should all discharge on the rack.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

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    Back to the subject....I freaked when I recently zapped my new receiver and the sound cut out for a split secondAll seems to be good but now I always make sure to ground to something else before touching it.

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    I hate static.

    I learned to touch my rack years ago in the summertime when the A/C makes it drier in the house or man-cave.
    This photo was emailed to me this morn.. How coincidental.

    The expresion on the left guy is awsome!!
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  21. #21

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    Back to the OP, the electricity will always take the shortest path to ground. It's good to get in the habit of touching the chassis or rack for your gear before any buttons or knobs, but it's pretty rare that you'll actually cook anything. The popping you hear through a system when the static goes off is usually from EMI from the discharge, not electricity going through it. I used to be able to touch the door knob to the room and get the speakers to pop when my system was on phono.
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    Quote Originally Posted by unc2701 View Post
    I used to be able to touch the door knob to the room and get the speakers to pop when my system was on phono.
    LOL.... Now that's what I call static...
    More later,
    Tour...
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    Quote Originally Posted by heiney9 View Post
    Static electricity of the kind mentioned here WILL take out delicate electronics as in microprocessors, etc. My brother had it happen to the volume control on his BAT pre-amp.

    I'd find a way to minimize it such as discharging on your rack, etc rather than the equipment.

    H9
    In telecommunications and server rooms static elimination busbar systems are installed. These can be quite elaborate. This company is where I have bought supplies to run static elimination systems at my work.

    http://www.stormcopper.com/busbar.htm

    One or two of the smaller bars wired to a separate ground rod would do the job. It is best to get at least 10-15 feet away from the foundation to get a good ground. In dry or alkali soils like we have sometimes it takes two ground rods tied together in series. This will suck the static right out of the air and would work excellent for equipment racks.

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    Last year was worse then this year for me, last year the static shock shutdown my volume. I had to unplug then plug it back in to reset it..

    This year just a couple of small bites. But my rig has changes as well, all the cables and new amps.
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    Yes,a reply to my own thread w/ a direct action and after effects.After going on on how I usually charge myself along the carpet and do then touch my gear nothing usually happens.Well I no longer know that to be true and a static charge can definitely be
    injurious to ones gear to varying degrees.A few minutes ago coming in from a really cold few minutes outside dropped the coat and went to turn on my 2-chl.As I approached my Onkyo and turned it on a very clear arc of electricity passed through me and into the
    Onkyo.It instantly shut down and I thought I fried it. I let it settle w/ it unplugged and after a few I plugged it back in ,turned it on and it works. A very scary scenario indeed .No longer will take static charges lightly and somehow find a way not to be so turned on.
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