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shagnasty View Drop Down
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Joined: 30 July 2007
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Points: 7683 		Post Options Post Options   Thanks (0) Thanks(0)   Quote shagnasty Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 12:44pm
Try primarc in reading for HO7 RN-f, they are cheap..... (also V cheap for stage lamps)
 
Just as an aside, if you planning on using powercans find out exactly how they should be wired..
 
Someone on ebay sold a panel with on white (outlet) and a load of blue (inlets) on, this is a death trap! You must always use the correct colour in the correct place. I may seem obvious, but in this very thread some one has wired up there amp racks with 32A PCons, this is fine if the amps have 32A Pcons on them but not allowed if you put the 32A connector on the amp cable and the socket on the distro as the 32a in only available in a chassis drain - line source configuratoration so reversing this could have very deadly results.
 
Also if mounting the things on a panel with audio connectors make sure the panel has a decent mains earth run to it and that the rear of the powercons is well insulated, tape is not good enough, the regs say that if elv (signal speaker) and LV (mains are in the same eclosure the ELV system should be insulated to mains standards (para-phrased there, not exact wording) but commonsense says we should have some kind of enclousure ove the mains wiring, I rivet a bit of 40x40 box section on with the ends welded up and cable glands in to let the power out.....
 
I am hoping this isn't news to anyone on here, but always worth being over cautous when it comes to the mains....
 
Smile
 
 
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mk2_ginger_biscuit69 View Drop Down
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Points: 7797 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mk2_ginger_biscuit69 Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 1:24pm
yeah was wondering that, i have power con in on a patch panel with signal speaker and the mains on. I have used electrical isolation rated heatshrink over the contacts on the powercons, then gaffa'd over the whole back of the unit. is there a 'proper' way of enclosing this? Seems wierd to have a chassis mount mains socket without some kind of isolation included with them.
 
on a side note, can you get blancing panels for unused slots (xlr sized). i dont like empty slots....
''Remember that the object of a subwoofer is to enhance the output of your main speakers, not overpower it''

''Dubstep - an elongated electronic fart''
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James Tengo View Drop Down
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Points: 2189 		Post Options Post Options   Thanks (0) Thanks(0)   Quote James Tengo Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 1:31pm
http://www.neutrik.com/uk/en/audio/210_1237834228/DBA-BL_detail.aspx
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James Tengo View Drop Down
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Points: 2189 		Post Options Post Options   Thanks (0) Thanks(0)   Quote James Tengo Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 1:35pm
And as for a solution to the isolation issue how about this
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mk2_ginger_biscuit69 View Drop Down
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Points: 7797 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mk2_ginger_biscuit69 Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 3:30pm
next question... where can i get 2x SCDR's?
''Remember that the object of a subwoofer is to enhance the output of your main speakers, not overpower it''

''Dubstep - an elongated electronic fart''
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gwarntek View Drop Down
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Joined: 17 November 2008
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Points: 766 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gwarntek Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 3:42pm
Originally posted by James Tengo James Tengo wrote:

And as for a solution to the isolation issue how about this

does this insulate electrically or just physcially??

can you even get electrical interference between powercons and speakons or xlrs in the same patch panel?? XLRs are balanced though so this means no interference?

peace
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gwarntek View Drop Down
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Points: 766 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gwarntek Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 3:44pm
Originally posted by mk2_ginger_biscuit69 mk2_ginger_biscuit69 wrote:

next question... where can i get 2x SCDR's?

thomann??

http://www.thomann.de/gb/neutrik_scdr.htm
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mk2_ginger_biscuit69 View Drop Down
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Points: 7797 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mk2_ginger_biscuit69 Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 3:54pm
speakons i guess cant get interferance as they are plastic, XLR's could i guess as the earth is attached to the chassis which in turn is attached to the patch panel, and powercons are plastic. Ive already earthed my patch panel just in case.
''Remember that the object of a subwoofer is to enhance the output of your main speakers, not overpower it''

''Dubstep - an elongated electronic fart''
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Peter Moller View Drop Down
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Points: 2531 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter Moller Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 4:06pm
Originally posted by shagnasty shagnasty wrote:

I may seem obvious, but in this very thread some one has wired up there amp racks with 32A PCons, this is fine if the amps have 32A Pcons on them but not allowed if you put the 32A connector on the amp cable and the socket on the distro as the 32a in only available in a chassis drain - line source configuratoration so reversing this could have very deadly results.
  
 
That'd be me!
 
I am not sure what you mean the issue is?..
The 32A powercons are just like the 20A ones a 3 pin connector.. Yes, they are the wrong gender, but given the tight pack of my amprack and the fact that the connectors are inaccessible during setup and normal use, its not an issue - and these felt a lot safer than other compact, 32A rated options on the market..
 
/p
 
 
 
real phone no: +45 four zero six two four four nine eight ( using obvious anti phone spam encryption )
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James Tengo View Drop Down
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Points: 2189 		Post Options Post Options   Thanks (0) Thanks(0)   Quote James Tengo Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 4:30pm
Neither gender 20a powercons or the 32a versions have easily accessible live terminals, the differing keyways on the 20a powercon are to avoid cross patching a live feed to another live feed. The sockets are virtually identicle apart from the keying so (unlike a ceeform with exposed pins if reversed) how could there be potentially dangerous results? I'll agree that if the rack was to be sub-hired or dry-hired sticking with the standards would be prudent, but if it's only Peter using his rack, and there isn't the plug/socket avalible as a "B" version as the 20a powercons have, I would deem suitable for use and safe when operated with awareness.
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gwarntek View Drop Down
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Joined: 17 November 2008
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Points: 766 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gwarntek Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 4:35pm
Originally posted by mk2_ginger_biscuit69 mk2_ginger_biscuit69 wrote:

speakons i guess cant get interferance as they are plastic, XLR's could i guess as the earth is attached to the chassis which in turn is attached to the patch panel, and powercons are plastic. Ive already earthed my patch panel just in case.

can a speakon cable laying next to a power cable pick up any mains hum though?
peace
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tallmike View Drop Down
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Points: 2684 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tallmike Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2009 at 4:39pm
nope...
 
our copper multicores have 1.5mm mains cable taped to them - that's at least 16 cores of signal cable right next to the mains over a minimim 50m run, and there's never a slight hint of mains hum!
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