Bass Speaker Wire issue |
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odc04r
Old Croc Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5483 |
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I agree with that. Maybe consider also you have a dodgy voice coil that could be bouncing around and making an intermittent connection that could upset some amplifiers? Just guessing tbh.
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taurusty
Registered User Joined: 09 January 2007 Location: Jamaica Status: Offline Points: 473 |
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Well, sh*t got real last night at a wedding when I lost an iTech 6000 in spectacular fashion (pop, pop, pop with fire flashes) after removing one of the cables I'd thot was good from a bass bin while amp played moderately (yeah, I know about the hot disconnect and Neutrik not being rated) and replugging it into the alternate Speakon jack in the same box.
30 + years and have now lost 2 amps in 2 weeks. The only difference in my setup is my recent introduction of Speckle -finished Ohm 18" BR due to their stated hi efficiency and top hats making for a more "corporate' look over my usual Fane XB loaded carpeted T 18's. Gutted! |
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taurusty
Registered User Joined: 09 January 2007 Location: Jamaica Status: Offline Points: 473 |
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I removed the load and the cable attached to the RAM caused a red 'Fault' LED on that channel. Amp refuses to pwr on,even with the channels unplugged. The line fuse is intact. |
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Djdarch
Old Croc Joined: 10 November 2005 Location: Newark, Notts Status: Online Points: 1989 |
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sounds to me like you have found your problem , i imagine that the ohm bins might have pins 1 wired to pins 2 aswell thus you using a 4 core cable have plugged one amp channel into another.
some of the old martin em series did this , and also some logic IS series have the pins linked .
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taurusty
Registered User Joined: 09 January 2007 Location: Jamaica Status: Offline Points: 473 |
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Think U've cracked it DJArch! Just confirmed that with the box. Arghh!!! What stupidity is that???
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10920 |
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Hardly stupid if you have amps that are setup to output the same channel on all four pins, like a K20 - it means you get double the cable surface area.
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shagnasty
Old Croc Joined: 30 July 2007 Location: Guildford, UK Status: Offline Points: 7685 |
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This is why amps should have panonas and Patch panels have Speakon.
Wiring 1&2 together in an amp is IMHO a really crap ideal, bye to passive wedges etc in a heartbeat, if a single channel of HD speakon can't take full power from the amp either fit Panomas of multiple speakons, lesson to be learned here plugging cabs stright into amps without a patch panel is 2 bob...
Edited by shagnasty - 26 February 2017 at 8:22am |
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Mark James
Old Croc Joined: 15 January 2006 Location: rig side Status: Offline Points: 5309 |
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me so horny me love you long throw
horn loaded for her pleasure |
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shagnasty
Old Croc Joined: 30 July 2007 Location: Guildford, UK Status: Offline Points: 7685 |
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Just makes it harder to wire up your rig wrong blow stuff up, not that any of use ever get caught in traffic causing us to arrive late, do gigs tired, in poor light, have to wedge the amp rack under the the stairs in the corner of the stage, have different crew, have a beer, wire stuff up while on the phone.......
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Mark James
Old Croc Joined: 15 January 2006 Location: rig side Status: Offline Points: 5309 |
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lol if i make my patch panel right the only thing i can realy get wrong is mixing up left and right [so reverse sterio, not realy an issue at a rave type situation, more to the point easy fix o lasting damage] or mix up which channel is connected to which bin, not an issue realy. well not a broken amp/driver situation, also means your not having to fish about inside a rack your looking at a clean flar panel
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me so horny me love you long throw
horn loaded for her pleasure |
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taurusty
Registered User Joined: 09 January 2007 Location: Jamaica Status: Offline Points: 473 |
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Have to disagree Shags, if I'd made a patch panel and had both channels in one NL4 there would be no functional difference from plugging str8 into the amp.
Reason I don't use a rack patch panel is this is my small sound (4 JBL Eons, and 4 single bass) so space/size is a premium. Would like to thank everyone for their help and comments. This just shows the value of this community & how costly a wrong/incomplete investigation/diagnosis can be. Cheers! Edited by taurusty - 26 February 2017 at 4:47pm |
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4D
Old Croc Joined: 13 November 2008 Location: Winchester Status: Offline Points: 4257 |
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Raw deal there seems someone has had a bright idea and not labelled it up correctly..
According to this should be on -1 +1 no mention of linked to -2+2 http://www.notape.net/files/eqs4/ohm-br18b/OHM-BR18B-cc43ee9.pdf Linking pins whilst it might allow reduce power loss it sure seems like a stupid idea with disaster waiting to happen to the unwary. I prefer the flexibility of Ponoma banana plugs and despite having to use them intensely dislike NL4 bring back the trusty ep4's of the good old days |
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DMZ. "The bass was intense. Girls were literally running up to stand next to the subs"
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