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Thread: About Wiring Up Speakers To AMP!!!

  1. #1
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    About Wiring Up Speakers To AMP!!!

    Ok i have read over ALOT of articles explaining the whole ohms in car audios but still do not understand some places...I thought it might be easier asking here so any help would be greatly appreciated. Ive got a Blaupunkt GTA 450 (640watt 4 Channel) amp and am going to put components in front doors and 6x9 in rear, need to know what the best method for wiring it to the amp is. I have read about ohms etc and somewhere it says its better to bridge the rears to get lower impedancy (which is good)...Till before I was just thinking plug in rear and front preouts, then just wire each channel for each speaker? Or is there a more effective way to get better sound?

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    FLAC Jahntassa's Avatar
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    Firstly, this is a carPC forum. Unless you're installing a CarPC, this isn't really the place for you. You'd be better off finding a dedicated car audio forum.

    If you have a four channel amp, and two sets of speakers (front component, rear 6x9), and your components come with crossovers, your option is this.

    Connect the components to the crossovers, the crossovers to the amp. Connect the 6x9's to individual channels on the amplifier. You have four 'speakers' (as each crossover combines the components into an individual 'speaker') and a four channel amplifier. Therefore, one channel per speaker.

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    Quote Originally Posted by g_odagi
    I have read about ohms etc and somewhere it says its better to bridge the rears to get lower impedancy (which is good)
    Although this will give you more power to your 6x9's it will also sent them a mono output. So, unless your crossing your 6x9's over at 80-100hz I would say just wire each speaker up to its own channel. Bridging is usually something you do with subs to get more power.

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    Quote Originally Posted by blkwrx
    Although this will give you more power to your 6x9's it will also sent them a mono output. So, unless your crossing your 6x9's over at 80-100hz I would say just wire each speaker up to its own channel. Bridging is usually something you do with subs to get more power.
    Two 4 ohm speakers wired in parallel = 2 ohms. I'm willing to bet his amp can't handle that at all.

    What does the crossover frequency have to do with anything? Crossing over full-range speakers at that range is useless.

    Bridging doesn't "get more power." It changes the impedence of the output load on the amp allowing it to produce more power.

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    Quote Originally Posted by Shadow
    Two 4 ohm speakers wired in parallel = 2 ohms. I'm willing to bet his amp can't handle that at all.

    What does the crossover frequency have to do with anything? Crossing over full-range speakers at that range is useless.

    Bridging doesn't "get more power." It changes the impedence of the output load on the amp allowing it to produce more power.
    Apparently some people need it all spelled out for them.

    By bridging the rear outputs of a 4 channel amp he will only have one channel to hook up both rear speakers, which will result in a mono signal to the speakers, which isn't good SQ practice. So unless he is only going to be running under 80-100hz through his 6x9's (which as you stated would be useless) I would not recommend it.

    His amp is stable to 2ohms but I doubt it won't do 2ohm bridged mono (amp sees 1ohm). That's if his speakers are 4ohm in parallel. He could also wire them in series which would result in 8ohm bridged mono (amp sees 4ohm). Either way the SQ would suck and he should just wire one speaker to each channel.

    You said yourself the bridging the amp produces more power. Just because I didn't explain that it was through lowering the ohm load doesn't make it not true. The point is that more power is going to the speakers.

  6. #6
    FLAC
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    The amp's not magic. You don't get more power. It's always there, you're just not using it.

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    Duh, your arguing semantics. The word get vs produce Either way the point is that the speaker is seeing more power.

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