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Speaker Cable to TRS Jack on Wall Plate

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Speaker Cable to TRS Jack on Wall Plate

Postby Jack's Joy » Tue Jun 26, 2012 1:10 am

Can I hook up speaker cable to a TRS jack for a wallplate?

I bought 20 feet of Mogami speaker cable (#3082, 15AWG). I couldn't find any wall connectors that have a TS locking connector, so I ordered a double wallplate with TRS connectors from Redco(http://www.redco.com/shopexd.asp?id=473). I have two sets of wire so that I will run one set to one jack and the other set to another jack (on each end).

Can I attach my Mogami speaker cable to it? I assume I would only use the tip and sleeve connectors (tip for the speaker wire and sleeve for the ground) and leave the ring open. Will this work? Or, should I order a different wallplate? Thanks!
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Re: Speaker Cable to TRS Jack on Wall Plate

Postby ef37a » Tue Jun 26, 2012 5:08 am

Yes, basically just wire hot to tip "earth" to sleeve and leave the ring o/c.

Can I assume that this is going to carry the output of a guitar amp? If so and the amp has a valve op stage I would wire the remote jack as a short. Then if some clot fires up the amp forgetting to check that there is a speaker plugged in tother end, little immediate damage will be done...DON'T do this however if it is a transistorized amp!

Some will say it would be "safer" for other equipment to use other than jack. Speakons for example. My choice would be 4 pin XLR.

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Re: Speaker Cable to TRS Jack on Wall Plate

Postby Hugh Robjohns » Tue Jun 26, 2012 7:08 am

Neutron do latching trs chassis sockets, but to avoid accidents from plugging line sources into a power amp output I would strongly recommend using speakon connectors which are inherently latching. There is even a two pole version with centre ts socket for compatibility if that is important.

Make sure the two wires only connect the two sockets (in control room and studio) and don't connect to ground anywhere!
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Re: Speaker Cable to TRS Jack on Wall Plate

Postby grab » Tue Jun 26, 2012 8:46 am

Jacks are technically the worst connectors you're going to find. A well-designed connector should have hardware which holds it together so that the electrical connectors are unstressed. In a jack socket though, it's the electrical connectors which physically hold the plug in. Bad design, but that's the best they could do back in the day, and it's too late now to use anything else for guitars.

For speakers though, Speakons are the way to go, and all "serious" speakers use them instead of TS jacks. If you're making up anything which you want to last for a long time, go Speakon.
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Re: Speaker Cable to TRS Jack on Wall Plate

Postby Exalted Wombat » Tue Jun 26, 2012 11:20 am

grab wrote:Jacks are technically the worst connectors you're going to find. A well-designed connector should have hardware which holds it together so that the electrical connectors are unstressed. In a jack socket though, it's the electrical connectors which physically hold the plug in. Bad design, but that's the best they could do back in the day, and it's too late now to use anything else for guitars.


A strange criticism. There has to be some tightness between the electrical contacts, what matter if the same tightness holds things together? And if a guitar cable gets yanked would you rather it pulled out of the amplifier socket or brought the whole stack to the floor?

Looking for "technically worst" don't forget the old DIN speaker plugs :-) Or screw terminal speaker outputs without a barrier to block "whiskers" from shorting out. Or the plug-in effects box on the old H&H amps, with all that voltage on a DIN connector. Or anything Belkin, that broke if you looked at it.

But, yes, use Speakon. People tend to plug things into sockets that look "right". Jacks arent "right" for speakers, but they are for other equipment that could be harmed by a speaker output.

How COULD anyone think a microphone went into the speaker output of a H&H MA100? Ever lent a small PA to a jazz band? I have :-(
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Re: Speaker Cable to TRS Jack on Wall Plate

Postby grab » Tue Jun 26, 2012 12:01 pm

The tightness required to give a secure electrical connection is not the same tightness as required to hold the weight of a connector and a couple of yards of 4sqmm 2-core cable. Just by itself that'd be bad enough, but a jack cable compounds by making the sleeve connection a fulcrum to provide an inch or so of leverage to the tip connection. Hence the joy of regularly having to lever the tip connection back out again on a guitar jack.

Sure, DINs weren't any damn good either, but even they didn't have the leverage problem that jacks do.

And my experience is that if you trip over a guitar cable, it'll pull the whole rack onto the floor *and* then come out of the socket as well. Maybe I'm just lucky that way.
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