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Junior Varsity
Peavey SP4 speakers nackered, new baskets or magnets?
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<blockquote data-quote="Richard Stringer" data-source="post: 5821" data-attributes="member: 166"><p>Hey ya guys, erm, well, i've got two Peavey SP4 speaker cabinets and two drivers sound nackered. I power the SP4 cabs each with a bridged QSC RMX1450, I set gain structure using a 400hz sinewave and piezo tweeter before the event and used very thin red tape to mark exactly which vu meter levels on the dj mixer are at the clip point, where the dbx 223XL crossover knobs should set and amplifier attenuators should be set at the onset of clipping. Then left 2dbu of headroom on the dj mixer by putting the red tape marks 2dbu below the dj mixer clip point.</p><p></p><p>So technically the drivers shouldn't of blown seeing as not once all night did I run my system into clipping and I didn't even get to have my system on full (still leaving 2dbu headroom). So, two questions, what do you guys think about the SP4 cabs handling 1,450 watts per cab even with leaving 2dbu headroom, should I technically be able to power them with the bridged RMX1450 amps or are Peavey pretty weak speaker cabs which ideally you should never power with anything more than their continuous power rating?</p><p></p><p>Also, i'm not sure if I need new magnets or new baskets, here are two video demos, i've never once ever blown drivers before and i've been doing events for 17 years, albeit with different pa speakers and amps. One driver out of each SP4 cab failed so I put both working drivers in one cab and both failed drivers in the other cab so you can hear the difference. Anyway, if you can tell me if I need new magnets or baskets i'd really preciate it.</p><p></p><p>The SP4 with working drivers (the bass is rattling the camera microphone a little)</p><p><a href="http://www.youtube.com/watch?v=TyfR8-YE_0o&feature=plcp" target="_blank">Test video 2 (working drivers) - YouTube</a></p><p></p><p>The SP4 with failed drivers (the drivers themselves are rattling and sound awful)</p><p><a href="http://www.youtube.com/watch?v=1abJAXMshFE&feature=plcp" target="_blank">Test video 1 (broken drivers) - YouTube</a></p><p></p><p>I'm pretty sure myself that I need new baskets because of mechanical damage to the drivers but I wanted to make sure so I thought i'd ask you guys, thanks.</p></blockquote><p></p>
[QUOTE="Richard Stringer, post: 5821, member: 166"] Hey ya guys, erm, well, i've got two Peavey SP4 speaker cabinets and two drivers sound nackered. I power the SP4 cabs each with a bridged QSC RMX1450, I set gain structure using a 400hz sinewave and piezo tweeter before the event and used very thin red tape to mark exactly which vu meter levels on the dj mixer are at the clip point, where the dbx 223XL crossover knobs should set and amplifier attenuators should be set at the onset of clipping. Then left 2dbu of headroom on the dj mixer by putting the red tape marks 2dbu below the dj mixer clip point. So technically the drivers shouldn't of blown seeing as not once all night did I run my system into clipping and I didn't even get to have my system on full (still leaving 2dbu headroom). So, two questions, what do you guys think about the SP4 cabs handling 1,450 watts per cab even with leaving 2dbu headroom, should I technically be able to power them with the bridged RMX1450 amps or are Peavey pretty weak speaker cabs which ideally you should never power with anything more than their continuous power rating? Also, i'm not sure if I need new magnets or new baskets, here are two video demos, i've never once ever blown drivers before and i've been doing events for 17 years, albeit with different pa speakers and amps. One driver out of each SP4 cab failed so I put both working drivers in one cab and both failed drivers in the other cab so you can hear the difference. Anyway, if you can tell me if I need new magnets or baskets i'd really preciate it. The SP4 with working drivers (the bass is rattling the camera microphone a little) [url=http://www.youtube.com/watch?v=TyfR8-YE_0o&feature=plcp]Test video 2 (working drivers) - YouTube[/url] The SP4 with failed drivers (the drivers themselves are rattling and sound awful) [url=http://www.youtube.com/watch?v=1abJAXMshFE&feature=plcp]Test video 1 (broken drivers) - YouTube[/url] I'm pretty sure myself that I need new baskets because of mechanical damage to the drivers but I wanted to make sure so I thought i'd ask you guys, thanks. [/QUOTE]
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