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Thread: Startup thud solution

  1. #1
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    Startup thud solution

    I found this time delay relays:

    http://www.macromatic.com/literature...imeranger.html

    They could be connected to the switched power of the amplifier and have it start a few seconds after the PC, thus eliminating startup thuds.

    What do you guys think?

  2. #2
    Maximum Bitrate jusatry's Avatar
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    Quote Originally Posted by Alric
    I found this time delay relays:

    http://www.macromatic.com/literature...imeranger.html

    They could be connected to the switched power of the amplifier and have it start a few seconds after the PC, thus eliminating startup thuds.

    What do you guys think?

    Great find! how much are they/where can we get em? (i suspect this would work as a very rudeimentary shutdown contoller, that is, cut power if necessary after x amouont of minutes)

    EDIT: i jsut found them online, the delay turn on ones cost about $50 w/out shipping.....

  3. #3
    Variable Bitrate ryuandwings's Avatar
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    Quote Originally Posted by Alric
    I found this time delay relays:

    http://www.macromatic.com/literature...imeranger.html

    They could be connected to the switched power of the amplifier and have it start a few seconds after the PC, thus eliminating startup thuds.

    What do you guys think?
    Hey guys, how about this thing?
    Listed for $30. It is not cheap, but for people like me who has no elec knowledge, it can be very simple.

  4. #4
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    I think for our purposes this one seems better:

    http://www.nationalcontrols.com/timer1-14.htm

  5. #5
    Variable Bitrate ryuandwings's Avatar
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    Quote Originally Posted by Alric
    I think for our purposes this one seems better:

    http://www.nationalcontrols.com/timer1-14.htm
    So these things work for eliminating startup thuds?
    Is it just the cost issue?

  6. #6
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    In my case it would prevent the amp power on. My idea is to turn on the amp about 15 sec after the PC.

  7. #7
    Raw Wave Rob Withey's Avatar
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    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

  8. #8
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    Looks pretty cool. But wouldn't the time delay relay be simpler?

  9. #9
    Raw Wave Rob Withey's Avatar
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    Quote Originally Posted by Alric
    Looks pretty cool. But wouldn't the time delay relay be simpler?
    Yes, simpler, but more expensive.

    Also, how you gonna solve the thump when you switch off?
    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

  10. #10
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    With my set-up I don't have a switch-off thump. In my case the Opus power supply sets the PC to standby a few seconds after the amp is off.

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