4x v1000 and proline 3000 |
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king david
Young Croc Joined: 17 January 2007 Location: italy Status: Offline Points: 1324 |
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I've seen them destroy entire sections of sound systems a few times, and while most of those times they were run well into clipping, I've seen them killing drivers without actually being driven to clip, but with good limiting with a nice DSP. It may have been that the drivers were quite old, but still, they're widely used in the amateur scene and I can't say many good things about them. I tested them vs my Crests and then the FFAs, the latter cost much more but old used Crests aren't more expensive than a Proline. If you don't want to risk catastrophic consequences you better stay well out of clip (I think the actual clipping starts a little before the red lights go on, definitely Crest limiting is so much better). Most important, they don't sound that good, neither are so powerful, it was like night and day vs Crests and FFAs.
Edited by king david - 13 December 2018 at 8:56pm |
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just passing thru
New Member Joined: 13 December 2018 Location: sweden Status: Offline Points: 1 |
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sorry to interfere with your conversation. but need to know your thoughts. i got 2 crown 5002 amps and 4 void 18-1000 loaded in scoops and thinking to run 2 v18-1000 on each amp bridge mode. one amp is to weak to run all 4
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king david
Young Croc Joined: 17 January 2007 Location: italy Status: Offline Points: 1324 |
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do it, but don't get carried away too much when you play your scoops! You'll probably hear when you get close to the limit. Still, I remember 8 scoops driven by two crown 5000vz as very heavy sounding, drivers couldn't take much more
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10920 |
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Define ‘good limiting’ for me?
Did the user actually measure the RMS voltage or current required to cause heat buildup in the magnet or coil of the driver once in the box and set the limiter to that value? Or did they just take the AES rating and stick it in a calculator? |
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gen0me
Young Croc Joined: 20 February 2016 Location: UK Status: Offline Points: 999 |
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If clip is a problem you can try to find its bigger brother A-One 4400.
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Jack_The_Ripper
Registered User Joined: 04 March 2018 Status: Offline Points: 214 |
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This kind of backs up my theory because I thought they did clip before they actually clip, I mean the sound quality degradation about 3db before clipping I heard backs this up. I never clipped the two I had but the sound quality loss about 3db from clipping and the horror stories I read a lot of places of people destroying drivers made me sell mine. I too do believe the clip lights are inaccurate and do think clipping occurs before the clip lights come on so this would lead owners to believe they're only just clipping the amp when in fact clipping occured a while ago at lower level and now they're BADLY clipping the amp regardless of the clip lights only just being tickled.
Edited by Jack_The_Ripper - 14 December 2018 at 8:32am |
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concept-10
Young Croc Joined: 17 May 2016 Status: Offline Points: 1292 |
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Three CA copies (OHM badged) on rig resale at the moment, all ment to be immaculate, £400 each is a good price.
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Timebomb
Old Croc Joined: 11 October 2004 Location: Lancaster Status: Offline Points: 2716 |
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Could well be the front panel clip indicators on these amps are not always calibrated correctly, ive seen it on several other amps, and not just Chinease amps...
I think the fact that they have huge supply capable of delivering very high currents will have something to do with it, as has been said many other amps will limit current if you push them to the edge with lot crest factor / clipped signal, the inf8 V2 had a bit of a rep for blowing drivers and i put that down to the very high current delivery , and the confusing limiter...
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James Secker facebook.com/soundgearuk
James@soundgear.co.uk www.soundgear.co.uk |
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7199 |
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+100 You really have to check exactly where these amps start to distort with a proper meter - or scope - not rely on the clip LEDs! And a lot of people/amps will get away with it because of a weak PSU. It sounds like the 3000 does what it says, so will blow drivers unless properly limited. And you have to understand exactly what the AES specs mean, as well as compensating for the type of muzak and dynamics (crest factor). I can still remember the first acid house dj thing I did - after a 'normal´gig. The highly compressed signal - and continuous redlining by the dj´s cost me 2 x Gauss 4583´s. An expensive lesson. |
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10920 |
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Clipping is a symptom however. The CAUSE of the failure is still too much long term average current. |
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king david
Young Croc Joined: 17 January 2007 Location: italy Status: Offline Points: 1324 |
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Cant remember how the limiter was set, but the amp was kept below clip. The people who do like you suggest most probably use other amps. Cant see proline amps in professional rigs
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Dub Specialist Sound
Old Croc Joined: 15 November 2013 Location: Smethwick Status: Offline Points: 4873 |
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Pretty sure them ohm amps are Chinese too arnt tha?
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Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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