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Thread: 1000w Rms Amp On 2000w Rms Sub

  1. #1
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    1000w Rms Amp On 2000w Rms Sub

    Will it be possible to run a 2000w RMS SUB Ie the AUDIOBAHN-AWIS12P with a 1000w rms amp ie the Alpine Pdx 1.1000

  2. #2
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    yes, just need to set the gains correctly.

    you can match any sub with any amp as long as the signal isn't clipped.

  3. #3
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    so it wont pull extra power from the amp and damage it?? and what do you mean as long as the signal isn't clipped

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    Meaning, to optimize the signal with the amp to produce it's full power with out sending any distortion at all to the subwoofer.

    Bottom line, distortion is what kills the sub-woofer.

    Heres a quick link i've found. Hope it helps:

    http://en.wikipedia.org/wiki/Clipping_(audio)

  5. #5
    Variable Bitrate brucedog's Avatar
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    I'm a new guy, too, but here's how I set outputs and gains:

    It's usually recommended to put on some music that has a full-range sound and is a good recording.

    Start with the power turned OFF to your music amplifier.

    Set the output of your carpc or head unit or mp3 player - or whatever you're using as music source...to about 75%. That is, if it's a pc, turn up your media player volume to full, then adjust the pc's master volume to 75. If it is a mp3 player that ranges 0-25, then set the volume to about 19... Figure it out.

    Ok, you have the music volume level to the INPUT of your amplifier set. Now, turn the GAIN control on your amp all the way DOWN (counter clockwise).

    Now, with the music playing, turn the amp ON and slowly begin adjusting the GAIN of your amp higher and higher, until you hear the sound of distortion. If you have trouble determining what sounds like distortion, get a friend or two to help...

    Once the music sounds distorted, turn the GAIN control down a bit, so that it sounds awesome, but not distorted.

    Even though your speakers are rated at 2000 watts and your amp at 1000 watts, the speakers will not draw more from the amp than it can handle. If anything, you won't be able to blow up your speakers very easily with an underpowered amp!

    It's important to look at the book for the amp and see how many OHMS it is designed to work with, minimum. Meaning, if your amp book says it will work on 4 ohms, but your speakers are 2 ohms, there could be too much power flowing, and could overheat or damage the amp. At this stage, it would be beneficial for you to begin to learn something about OHMS LAW calculations, as they pertain to amps and speakers. Google it.

    About the most common mistake is conecting too many speaker to the amp, which can result in too low ohms, which can overpower the amp. It's not complicated to learn how to calculate, and once you know how to figret, no one can ever take that knowlege away from you...

    Are you planning a carpc install?
    Happy CarPC'ing!

  6. #6
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    Quote Originally Posted by brucedog View Post

    Are you planning a carpc install?
    Hey thanks for the Info. I have already got every thing for the carpc just need time to install it all in the car. the only worry i had was abt the sub and amp. now hopefully thats sorted too. Hopefully will post pictures of the car pc by this comming weekend.

    Regards
    A

  7. #7
    Constant Bitrate ronjon228's Avatar
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    Quote Originally Posted by brucedog View Post
    I'm a new guy, too, but here's how I set outputs and gains:

    It's usually recommended to put on some music that has a full-range sound and is a good recording.

    Start with the power turned OFF to your music amplifier.

    Set the output of your carpc or head unit or mp3 player - or whatever you're using as music source...to about 75%. That is, if it's a pc, turn up your media player volume to full, then adjust the pc's master volume to 75. If it is a mp3 player that ranges 0-25, then set the volume to about 19... Figure it out.

    Ok, you have the music volume level to the INPUT of your amplifier set. Now, turn the GAIN control on your amp all the way DOWN (counter clockwise).

    Now, with the music playing, turn the amp ON and slowly begin adjusting the GAIN of your amp higher and higher, until you hear the sound of distortion. If you have trouble determining what sounds like distortion, get a friend or two to help...

    Once the music sounds distorted, turn the GAIN control down a bit, so that it sounds awesome, but not distorted.

    It's important to look at the book for the amp and see how many OHMS it is designed to work with, minimum. Meaning, if your amp book says it will work on 4 ohms, but your speakers are 2 ohms, there could be too much power flowing, and could overheat or damage the amp. At this stage, it would be beneficial for you to begin to learn something about OHMS LAW calculations, as they pertain to amps and speakers. Google it.

    About the most common mistake is conecting too many speaker to the amp, which can result in too low ohms, which can overpower the amp. It's not complicated to learn how to calculate, and once you know how to figret, no one can ever take that knowlege away from you...

    Are you planning a carpc install?
    Good advice right here.

    Quote Originally Posted by brucedog View Post
    Even though your speakers are rated at 2000 watts and your amp at 1000 watts, the speakers will not draw more from the amp than it can handle. If anything, you won't be able to blow up your speakers very easily with an underpowered amp!
    Not true. To be honest, this is what "blows" most subs. Running a sub with an underpowered amp and then adjusting the bass or gain control to make it "louder" is what will ultimately lead to the subs demise. This causes massive distortion with makes the sub woofer meet or exceed it's xmax (travel) and then it heats up or just rips itself apart.

    If you follow the good advice about setting your gain right, you'll be fine. Just don't think that an underpowered amp won't blow the subwoofer, because it is in fact the easiest way to blow a sub.
    CarPC:
    1.8GHz Northwood, Intel 845 Mobo, 512MB DDR, 1x20GB + 1x160GB, Intel GPU, SB Live 5.1

    Sound System:
    Phoenix Gold RSD 65cs 6.5" Drivers, Infinity Tweets, Pioneer 305DVC 12", PPI Sedona 630IX, Alpine MRP-M500

  8. #8
    Maximum Bitrate Woofnstuff's Avatar
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    what he said... its called under powering for a reason, its better to over power than under power..

  9. #9
    Maximum Bitrate bes51659's Avatar
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    Clearification:

    Any amp can deliver a lot of power at high rate of distorsion. A clipped signal contains more energi than the pure signal.

    The clipped signal also contains a lot more energi at higher frequencies, as you can understand from the sharp edges. A tweeter of a 75W system is typically 1W. This is because the distribution of power in music is that way.

    This is why I think a lot of people say weak poweramps are worse than the more powerfull one. Unfortunately it is not entirely true.

    My best advice:

    Buy an amp that cannot kill speaker at normal conditions. Overpowering is always what kills the speaker.

    Never drive system untill it sounds bad.

    Do not fall far the "but my marshall amp goes to 11, man!" reasoning.

    Never crank the system up to max when drunk :-)

  10. #10
    Variable Bitrate brucedog's Avatar
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    ronjon:

    Thx for clarification on what blows spkrs. True, once gains are set and even turning HU or carpc up loud won't necessarily overpower or send clip'd to spkrs, the operator COULD either play highly bassy music, or turn bass up too high.

    rudeboy: remember to set amp gain initially and leave it. If it won't go loud enuf for you, you'll need a louder amp...

    best of luck.
    Happy CarPC'ing!

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