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Junior Varsity
Best budget amp(s) for pair of secondhand 18" subs?
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<blockquote data-quote="Brian jojade" data-source="post: 206447" data-attributes="member: 211"><p>The type of music that you are planning to play will determine which configuration is safe to use. If you are playing highly dynamic music, running at the peak rating will give you the most headroom. However, if you run heavily compressed music, using an amplifier that is much over the RMS rating of the speaker will cause them to burn up.</p><p></p><p>The rules are that you don't want to exceed the peak rating, ever. (3000 watts in this case) Also, your overall average power should not exceed the RMS rating of the amp, or the speaker will burn over time. (750 watts)</p><p></p><p>So, for normal music playback, it's generally accepted that 2XRMS is a good rating for someone that is smart enough not to run the amp balls open all night. With 2XRMS you can run the amp until you see clip lights flicker and be pretty safe. (again, not with sustained EDM, but normal music)</p><p></p><p>The spec sheet says that they recommend the MA9.6K amplifier. They don't say how the recommend connecting it to the speakers. If they expect you to use it in dual channel mode, that would mean the amplifier is rated at 1500 watts per speaker at 8 ohms. If you run it bridged, that would be 6000 watts at 4 ohms, which would be 3000 watts per speaker. Either configuration in the hands of the wrong operator can blow up the speakers.</p><p></p><p>Running less power is never a problem, as long as you are not clipping the amplifiers. The difference in output between 1250 watts and 1500 watts is barely noticeable.</p><p></p><p>The other thing to consider is how 'real' the power ratings of the amps are. Especially on subs, all amps are not created equal. Even though they may have high ratings numbers, the true output that they can provide may not be sustained enough at low frequencies to do the job. The QSC GXD is a fine little amp, but on subs, with a long extension cord, not going to be your friend. The Behringers get mixed reviews, but are in the same class as the QSC GXD.</p></blockquote><p></p>
[QUOTE="Brian jojade, post: 206447, member: 211"] The type of music that you are planning to play will determine which configuration is safe to use. If you are playing highly dynamic music, running at the peak rating will give you the most headroom. However, if you run heavily compressed music, using an amplifier that is much over the RMS rating of the speaker will cause them to burn up. The rules are that you don't want to exceed the peak rating, ever. (3000 watts in this case) Also, your overall average power should not exceed the RMS rating of the amp, or the speaker will burn over time. (750 watts) So, for normal music playback, it's generally accepted that 2XRMS is a good rating for someone that is smart enough not to run the amp balls open all night. With 2XRMS you can run the amp until you see clip lights flicker and be pretty safe. (again, not with sustained EDM, but normal music) The spec sheet says that they recommend the MA9.6K amplifier. They don't say how the recommend connecting it to the speakers. If they expect you to use it in dual channel mode, that would mean the amplifier is rated at 1500 watts per speaker at 8 ohms. If you run it bridged, that would be 6000 watts at 4 ohms, which would be 3000 watts per speaker. Either configuration in the hands of the wrong operator can blow up the speakers. Running less power is never a problem, as long as you are not clipping the amplifiers. The difference in output between 1250 watts and 1500 watts is barely noticeable. The other thing to consider is how 'real' the power ratings of the amps are. Especially on subs, all amps are not created equal. Even though they may have high ratings numbers, the true output that they can provide may not be sustained enough at low frequencies to do the job. The QSC GXD is a fine little amp, but on subs, with a long extension cord, not going to be your friend. The Behringers get mixed reviews, but are in the same class as the QSC GXD. [/QUOTE]
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Best budget amp(s) for pair of secondhand 18" subs?
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