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<blockquote data-quote="Andrew Prince" data-source="post: 82068" data-attributes="member: 1808">Re: JBL SRX / QSC PL236 underpowered?Interesting that. I remember when I was at Uni, we found out that a couple of the big PA hire companies in the UK had switched to using amps far bigger than their rated speaker output. In other words, they were using 4000W amps to drive 1000W speakers. The idea was that a 4000W amp performed much better in terms of sound quality, THD and noise at 1000W than it did at high power levels. I have no idea if PA companies still do this. Amp technology has probably vastly improved. This was 20 years ago.&nbsp;I&#039;ve noticed that. I end up thinning the lead vocals out using EQ to make them cut through a loud mix.&nbsp;&nbsp;This does seem to be the consensus. I&#039;m just wary of the fact that I&#039;ll have large amounts of bottom end compared to middle and top. But I guess it&#039;s something to experiment with in rehearsal.&nbsp;&nbsp;You would change the crossover from the published spec to your own? Interesting. I wonder if there would be any downside to that? I think the crossover point in the spec for the 718s is 31Hz which is freakishly low. Do you think the 718s would be able to handly up to 100Hz? I personally wouldn&#039;t have thought they were designed for this?</blockquote>

[QUOTE="Andrew Prince, post: 82068, member: 1808"] Re: JBL SRX / QSC PL236 underpowered? Interesting that. I remember when I was at Uni, we found out that a couple of the big PA hire companies in the UK had switched to using amps far bigger than their rated speaker output. In other words, they were using 4000W amps to drive 1000W speakers. The idea was that a 4000W amp performed much better in terms of sound quality, THD and noise at 1000W than it did at high power levels. I have no idea if PA companies still do this. Amp technology has probably vastly improved. This was 20 years ago. I've noticed that. I end up thinning the lead vocals out using EQ to make them cut through a loud mix. This does seem to be the consensus. I'm just wary of the fact that I'll have large amounts of bottom end compared to middle and top. But I guess it's something to experiment with in rehearsal. You would change the crossover from the published spec to your own? Interesting. I wonder if there would be any downside to that? I think the crossover point in the spec for the 718s is 31Hz which is freakishly low. Do you think the 718s would be able to handly up to 100Hz? I personally wouldn't have thought they were designed for this? [/QUOTE]

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