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Thread: Amp 9 it's a good amp for a DD?

  1. #1
    Constant Bitrate tibimakai's Avatar
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    Amp 9 it's a good amp for a DD?

    I'm building a DD PC and I would like to get some feedback from owners of this amp 9(basic mostly) before I order it.
    it heats up a lot? it needs a big heatsink?(pictures would not hurt) anti thump feature works well?
    there is another alternative out there? it has to fit in a DD case.
    I don't need crazy power, just like a car stereo or a bit better.

  2. #2
    MySQL Error soundman98's Avatar
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    this is about the only documented amp 9 dd install i know of...
    http://www.mp3car.com/worklogs/14566...n-project.html

  3. #3
    Constant Bitrate tibimakai's Avatar
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    thank you. I have folowed that thread, but I don't see a review or any real info about it.
    I don't remember the names but I remember that who makes those DD cases, made a pc to sombody with a motorhome and they couldn't figure out some noise issues and he was selling the amp. I have the same Intel Atom 230 board as him.

  4. #4
    MySQL Error scott_fx's Avatar
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    you'll have to double check the size, but these get decent ratings:

    http://www.parts-express.com/wizards...ge+Flash+Panel
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  5. #5
    Newbie elBradford's Avatar
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    Quote Originally Posted by scott_fx View Post
    you'll have to double check the size, but these get decent ratings:

    http://www.parts-express.com/wizards...ge+Flash+Panel
    That 4x100 Sure amp looks like it will be perfect for a project I'm throwing together (and maybe start selling as well) - does that look like it would put out good, clean power for a head unit replacement? Would 12V from the car battery be adequate to power it?
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  6. #6
    Constant Bitrate tibimakai's Avatar
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    I knew about that amp and asked on the forum about it and did not get an answer that I have expected and decided not to go with it.
    I have ordered today the Amp9.

  7. #7
    MySQL Error soundman98's Avatar
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    those parts-express amps use variations of the same tripath chipset that the amp9, and the bybyte amp are based on, so sound quality should be just as good.

    but the power supply specs say they will take dc voltage from 10-30v, but it is a little sketchy on weather dc input voltage affects overall output--like normal car audio amps, or weather the output power ratings were done at 30v power input..

  8. #8
    Newbie elBradford's Avatar
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    Quote Originally Posted by soundman98 View Post
    those parts-express amps use variations of the same tripath chipset that the amp9, and the bybyte amp are based on, so sound quality should be just as good.

    but the power supply specs say they will take dc voltage from 10-30v, but it is a little sketchy on weather dc input voltage affects overall output--like normal car audio amps, or weather the output power ratings were done at 30v power input..
    The Amp9 at 75 euros is quite a bit more than the bybyte and sure amps and if the performance is the same not worth it imo. All I need is one of these and a eq/pre-amp and a source and I should be good to do. Any tricks on eliminating pops when it's powered on?

    Edit: This pdf for the sure 4x100 amp states that it has pop protection built in, but that it shouldn't be used in conjunction with a preamp or with an unstable power supply - I'm guessing directly hooking up to the 11-14 volts of a car battery would be considered unstable?
    Last edited by elBradford; 03-06-2011 at 04:02 AM.
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  9. #9
    MySQL Error soundman98's Avatar
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    yes. so you would need a dc-dc power supply capable of delivering 12A max current to correctly supply the amp (it starting to get more expensive )

  10. #10
    Newbie elBradford's Avatar
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    Quote Originally Posted by soundman98 View Post
    yes. so you would need a dc-dc power supply capable of delivering 12A max current to correctly supply the amp (it starting to get more expensive )
    Except the Sure 4x100 will accept 6v-30v... In the thread about the Amp9 it appears that guy wired it up directly to the BAT line. It seems like hooking up this Sure amp to a relay controlled by ACC to the BAT line with an inline fuse should work but I'd really like to know if it wouldn't and why. Thanks soundman.
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