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Overheating ?

Discussion in 'AV Receivers & Amplifiers' started by RichB14, Feb 14, 2003.

  1. RichB14

    RichB14
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    At the moment i have my dvd player positioned on top of my Amp but it seems that half way through a film the picture quality is reducing. At times the picture halts on the screen but the counter carries on the only way to stop this is to turn off the dvd player. Could the heat being produced from the amp be messing with the player ? and would i be better off stacking on top off the dvd player. One problem i have is lack of room so everything is stacked one on top of the other (Amp,Dvd,Vcr,Sky,Ps2)
    :rolleyes:
     
  2. nathan_silly

    nathan_silly
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    Arrange like this

    PS2
    Amp
    VCR
    DVD
    Sat

    or

    PS2
    SAT
    DVD
    VCR
    Amp

    Nathan
     
  3. RichB14

    RichB14
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    Do you think it would help to put a sort of spacing between the units to help with heat dispersal
     
  4. nathan_silly

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    Well since the VCR runs cool, that might help (my DVD and my processor gets warm so placing on top of each other isn't that smart)

    My Audiolab 8000S gets pretty warm, so I got some thick wood poles (3" diamter) and cut 4" long, so I've placed them ontop of my Audiolab- so there's a big gap between the component above it.

    my setup

    CD
    DAC
    : : wooden pole stumps
    8000S


    I would move them around ASAP as you could damage/shorten the life of the DVD player lens/LSI's and the amp.
     
  5. nathan_silly

    nathan_silly
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    find below pic. Should only cost a couple of quid, or ask carpenter's for cutoffs (I got mine free)
     
  6. nathan_silly

    nathan_silly
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    argh! try again!
     

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  7. alexs2

    alexs2
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    Basically if you have a problem with heat,put the amp at the top of the pile,or somewhere else that keeps its radiated/convected heat out of the way of the rest of the gear.

    Certainly the heat output of some amps can be troublesome....I know....several Krells to feed and keep cool!
     
  8. timothyw

    timothyw
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    heh that reminds me of my botched student solution to fitting everything on my desk when i had just got my amp:
    Put the telly on toilet roll inserts (x4) as stilts on top of my amp. No overheating there ;) TV was only a 15 incher :smashin:
    Thankfully i have a better desk now..... :D

    EDIT: I can't believe I just did that for my 100th post :rotfl:
     
  9. RichB14

    RichB14
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    Nice idea about the wooden pole i was thinking along the line of something like that
     
  10. RichB14

    RichB14
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    Also considering putting the sky box under the center speaker as that will give me more room below to space things out. Not sure if that would effect the sky box though
     

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  11. sounddog

    sounddog
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    Looking at the picture of your cabinet ...

    First off I would move the PS2 off the top of the pile and place is vertically to the side.

    Then ... leaving enough room to the left or right for the PS2, put in a vertical partition, or 2 vertical supports towards the front and rear ... now attach a horizonal shelf about the height of your AMP ... plus as much extra as possible but not cramping the stuff below ... down from the TOP of your cabinet. Now you have you amp on the top with air all round it.

    On the next shelf ... stack (from the bottom) DVD, VCR then Sky box (Sky boxes (certainly the Pace and Ferguson ones I've had) tend to get quite warm.

    It's not easy to tell from the photo, but are the front doors and the back solid? If so, consider replacing them with some form of perforated material ... also if you find the whole lot still gets hot ... consider cutting holes out of the top and/or bottom of the cabinet as (as you probably know) heat will move upwards and using a non-solid shelf below the amp.

    If possible to find it all new homes ... move all the rest of the stuff out of the cabinet so that you have better air flow.

    Of course ... all this relies on you having some DIY / wood working skills ...

    Victoria
     
  12. Squirrel God

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    TheBorg,

    I have had problems before with placing CD players on top of amps. The heat rising did all sorts to the players over time, including drying the lubricant on the laser spindle. I would not be surprised if it was doing the same to your DVD player, hence the symptoms you're experiencing.

    In your receiver manual, it should give the usual warning about leaving a certain amount of cms (10-30, depending on receiver) free for air circulation.

    By placing anything on top of a receiver, you are blocking the air vents and not allowing the heat to dissipate upwards.

    If you are going to stack items up, one on top of the other without shelving, then I would therefore put the receiver on top of everything else.

    I only have my DVD player and receiver in my cabinet and I had to take the shelving out as with the shelving the receiver would've only had 2cm of ventiliation room. I put the receiver on top of the DVD player.

    In your setup, I would definitely put the receiver on top of everything else.
     
  13. Nic Rhodes

    Nic Rhodes
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    Modern DSPs in amps get seriously hot, hotter even than the power amps now days, I would put the amp on the top for these reasons and make sure there is plenty of air around them. It won't be long before we have to put fans on these chips alone.
     
  14. ditton15

    ditton15
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    my temporary fix has been to use 4 small glass tumblers, right way up so as to fit under the feet. took family a while to catch on to why there were so few glass tumblers in the cupboard.

    ditton
     
  15. sounddog

    sounddog
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    ... and then you had to return the tumblers??
     
  16. ditton15

    ditton15
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    I did think of using two empty Bushmills bottles ...:zonked:
     
  17. RichB14

    RichB14
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    Well as a temporary measure i've put four stong shot glasses ontop of the amp so it has a two inch gap now.
    About the doors i always have them open when is use.
    Also thinking about installing a fan in the back of the cabinet to increase airflow.
     
  18. ditton15

    ditton15
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    forgot to mention that each glass should have one shot of whiskey. The general rule for this is the same as elsewhere in AV. The quality of 'interconnects' should match the quality of the components. For top end, use Lagavulan, perhaps with just a dash of Highland water. But generally a good blend, like Famous Grouse, will do.

    Avoid the Jonnie Walker like the Bose - all hype and advertising.

    Slainte

    ditton

    ** warning: if any of the above is taken internally it can drastically imporve sonic appreciation **
     
  19. mandlebrot

    mandlebrot
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    If you are thinking of fitting a fan in the back of the cabinet to increase air flow why not just remove the back altogether that should sort the air flow out nicely and won't cost anything or introduce more noise;)
     
  20. RichB14

    RichB14
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    Well after 5 hours useage no heat problems at all, just good playback.
    So a couple of inches do make a difference:smoke:
     
  21. Squirrel God

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    I'm sure the missus agrees with you ;) :devil:
     
  22. ditton15

    ditton15
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    Pleased to have helped. As Soundog suggests you may have to replenish the glasses cabinet, but otherwise perhaps the cheapest upgrade yet. :D

    ditton
     
  23. RichB14

    RichB14
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    Nah just drink from the bottle no washing up either:zonked:
     
  24. SystemBlack

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    I custom built a unit from MDF after measuring all the components. The top shelf slides on drawer runners so I can get to the back of the amp to connect/disconnect things as needed. I am considering cutting two 8 cm holes in it to fix a couple of computer case fans to extract the heat from the amp. I would also like to say that the hottest component, usually the amp, should have the best airflow to aid cooling although a certain amount of hotness is usually ok as the components have a vertain heat range for normal operation
     

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  25. ditton15

    ditton15
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    well, that would look really great in my front sitting room ...
     
  26. eviljohn2

    eviljohn2
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    Tagging onto the end of this (as always a bit late), I've got my DVD's stacked on my Tosh 420 which is nicely lifted away from my Denon 1802 on halves of squash balls. Not the ideal solution, but student solutions are always far more practical than pretty :cool:
     

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