AL wrote on Sun, 18 April 2004 07:59 |
The Question lies on the subs. HE runs a CE2000 amp and jbl mpro 255s subs. When i speced them I saw they were a touch underpowered. (ce2000 660 stereo 4ohm, jbl 500rms 4ohm cab)
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For techno running full tilt -- yeah, it's underpowered. WAAY underpowered. You probably want more subs, too.
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He had some ce 1000 he was going to use for tops and monitors so I bridged the 1000's and gave each one to a sub witch sould have gave it 1100w. I have never used the ce1000 bridged or for subs(only on monitors) so I didn't know how they would preform. The 1000's did not do well, the 2000 stereo had more spl and a fuller bottom.
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Well, the 2000s are somewhat more powerful. You're right -- the CE1000 ain't an amp for subs.
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Ive heard power compression tossed around alot but I have not found anything to read up on it so I don't exactly know what it means. my questions is could it be power compression(any info you have on it would be nice). Or is the ce 1000 just not the amp for the job(sorry but i don't have much exp. with the 1000).
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As Square says, power compression occurs when the voice coils heat up, which causes their impedance to go up, which means the speakers get quieter, so you crank up the output, which heats 'em up more, which makes 'em get quieter. You see where this leads.
Power compression arises either when you have too much power going to a driver that's not adequately cooled, or if the amp is clipping. In the latter case, the harmonics that clipping produces can't be reproduced by the speaker, so that energy is dissipated as heat in the voice coil.
Having said all of that: the CE1000 ain't an amp you want to use for subs -- it's just tooooo small. You simply need a lot more power.
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The crown web site says there [sic] pretty much the same amp.
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yeah, 'cept as I said, the 2000 is somewhat bigger. The CE4000 is a different story.
--a