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Amplifiers
noob to ohms!!!
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<blockquote data-quote="dB-SPL" data-source="post: 3333619" data-attributes="member: 579631"><p>Okay.. You can't just take any amp and wire it up to a lower impediance and expect to get more power. Therefore, they set limits at lower impediances so that it can still be stable at 2 AND 4-ohms without harming the amp. I don't see amps with such low numbers fry as often as 1000+W amps, but it can happen. So.. Your amp was made to produce 500W to one channel @ 4-ohms. If you use this channel to power your subs, you're just sending more heat than the amps heatsink is suppose to see at 4-ohms and your subs won't see the full 500W because they're wired for a 2-ohm load. Lower impediance = more current = more heat. This is why your amp is limited to 250W into each channel @ 2-ohms. So, if you want to do this the right way, Wire your subs to the amp for a 2-ohm load. They will be SEVERLY underpowered, but you're not going to overheat the amp.</p><p></p><p>OR look for an amp that says "1 x 800Watts RMS @ 2-ohms" so they'll see enough power at the right impediance. Hope that helps you understand a bit better. Otherwise, you'll have to ask someone else how to explain impediance wiring and stability...</p><p></p><p>-Bill-</p></blockquote><p></p>
[QUOTE="dB-SPL, post: 3333619, member: 579631"] Okay.. You can't just take any amp and wire it up to a lower impediance and expect to get more power. Therefore, they set limits at lower impediances so that it can still be stable at 2 AND 4-ohms without harming the amp. I don't see amps with such low numbers fry as often as 1000+W amps, but it can happen. So.. Your amp was made to produce 500W to one channel @ 4-ohms. If you use this channel to power your subs, you're just sending more heat than the amps heatsink is suppose to see at 4-ohms and your subs won't see the full 500W because they're wired for a 2-ohm load. Lower impediance = more current = more heat. This is why your amp is limited to 250W into each channel @ 2-ohms. So, if you want to do this the right way, Wire your subs to the amp for a 2-ohm load. They will be SEVERLY underpowered, but you're not going to overheat the amp. OR look for an amp that says "1 x 800Watts RMS @ 2-ohms" so they'll see enough power at the right impediance. Hope that helps you understand a bit better. Otherwise, you'll have to ask someone else how to explain impediance wiring and stability... -Bill- [/QUOTE]
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