Oddjob Posted December 12, 2009 Share Posted December 12, 2009 I used "load" in two different ways: a speaker is a load on the amplifier, and a speaker baffle can serve to load a speaker. First the speaker: the speaker's impedance tells you how much power the speaker will draw out of the amplifier. The lower the impedance, the closer it is to a short circuit (more heat), and the more power the amplifier will try to put in. The higher the impedance, the less power the amplifier will try to put in (less heat). It is sort of counter-intuitive. The actual calculations are a bit complex, but the amplifier manufacturer usually supplies the figures. Think of it this way: the connected load is drawing the power out of the amplifier, the amplifier isn't pushing it out. That's why no load produces no output. Here's a further complication: your amp is rated at 1000w @ 2 ohms. I would bet this is in bridged mode. In stereo mode, the amp could be rated at either 250w or 500w @ 4 ohms, each channel, both channels driven. It depends on the amplifier design. Best advice is to find the spec sheet. To return to the thread topic: The speaker baffle (whatever the speaker is mounted on/in), serves to acoustically load the speaker. This is a long discussion, but to simplify it for the sake of brevity, your speakers will work better mounted on a solid, airtight surface with some airspace behind. Quote Link to comment Share on other sites More sharing options...
XTCoX Posted January 2, 2010 Author Share Posted January 2, 2010 The speaker draws power.... hmmm. That never occurred to me, but it makes sense and clears up a lot of the logic gaps. And you guessed right, 2 ohms in bridged mode . Again, thanks Quote Link to comment Share on other sites More sharing options...
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