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Thread: Startup thud solution

  1. #11
    Variable Bitrate
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    I guess we'll find out if it works...I just ordered this one:


    http://www.nationalcontrols.com/timer1-9.htm

  2. #12
    Constant Bitrate P4_2.66GHz's Avatar
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    Here is an easy way to virtually eliminate "thud" from the amp. All that is needed is 2 relays.
    First relay would turn on when the car is on. It can be triggered via cigarette lighter wire.
    First relay would short a positive 12V wire coming out from your PC system to connect the coil of the second relay. Other end of the could would be the PC's power supply ground. The second relay, then would connect the car's 12V (could be from the same cig lighter wire) to the amp.

    Voila, you got yourself a delayed amp turn-on.

  3. #13
    Variable Bitrate Cherub211's Avatar
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    Two problems: One: your cigarette lighter works all the time, this is a minor oversight so we'll assume you meant the ACC wire. Second problem, the relays setup as you described arn't delayed at all. They would come on and off as the computer power supply does, not the computer itself.

  4. #14
    Constant Bitrate P4_2.66GHz's Avatar
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    Quote Originally Posted by Cherub211
    Two problems: One: your cigarette lighter works all the time, this is a minor oversight so we'll assume you meant the ACC wire. Second problem, the relays setup as you described arn't delayed at all. They would come on and off as the computer power supply does, not the computer itself.
    On the cig ligher wire, I did mean ACC. Sorry, never had a domestic vehicle.
    I am using opus power supply, it is 5 sec delayed when starting up. I used to have a "thud" when PC powered up, but used the 2 relays to solve the problem. I assume the thud happens when the PC/Sound adapter is powered up. If that is not the case, (thud happens during boot-up) then my solution would not work. The second relay is triggered by the PC's power supply, at the same time MB, HD and other accessories are powred up and only in the case if the vehicle is in ACC mode.

  5. #15
    Maximum Bitrate albysure's Avatar
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    if you guys searched you woulda found this delay that i use

    http://www.davidnavone.com/detail.asp?PRODUCT_ID=N-66A

    works nice!

  6. #16
    Variable Bitrate
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    Thanks Alby.

    Even after knowing it was you and what the device is I couldn't find the previous reference to it.

    Hopefully I can cancel the order for the one I ordered!

    Cheers,

  7. #17
    Variable Bitrate
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    Just an update. Installed the David Navone on-delay relay (N66A) and it works like a charm. I like the fact that I get a few seconds of silence after the system is on to adjust the volume depending on the passenger.

    Cheers,

  8. #18
    Maximum Bitrate albysure's Avatar
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    glad it worked for you

  9. #19
    Variable Bitrate ryuandwings's Avatar
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    Quote Originally Posted by Alric
    Just an update. Installed the David Navone on-delay relay (N66A) and it works like a charm. I like the fact that I get a few seconds of silence after the system is on to adjust the volume depending on the passenger.

    Cheers,
    That seems to be a simple solution and not that expensive
    One question, how exactly do you connect that?
    It has three wire? Where input coming from and output going to?

    Thanks

  10. #20
    Maximum Bitrate albysure's Avatar
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    ground, 12v positive in for the trigger and your output

    what i did was to use the yellow 12v wire from the ps to trigger the delay and wired the output delay side to the amp remote

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