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speaker wires to short.
#155938 01/16/07 10:29 PM
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Ok, I am reorganizing my AV equipment with the addition of new Emotiva amp. The amp weighs so much I need to place it lower in my DIY AV rack so it does not break the shelfs.

Anyway when I wired my surrounds, stupid me did not allow for a lot of extra slack. The speaker wire will barely reach the amp, but with no slack.

Is there some type of extension I can add to get more distance without sacrificing sound transmission quality to my Qs8's?

I seemed to see some longer banana plugs once, which might work. I really don't want to twist another piece of speaker wire to the existing run if I don't have to...

Thanks, Randy


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Re: speaker wires to short.
SirQuack #155939 01/16/07 11:57 PM
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Randy what material are your shelves made from?

I placed two 40 lb. buckets of drywall mud (80lbs) on each of our extended shelves whenever we built them to test the strength of each shelf, ours is made from 3/4" MDF with heavy duty shelf rollers ... I bet we could have added another 50lbs without any problems.




Could you terminate the in-wall wires via a wall plate and use short runs of speaker wires with banana plugs on either end for the connects?

Edited to add...

This is how we did ours...



Last edited by BrotherBob; 01/17/07 12:04 AM.

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Re: speaker wires to short.
SirQuack #155940 01/17/07 12:36 AM
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I second BrotherBob's suggestion about the wall plates. As I'm designing my media room, I found a 7.1 plate that's around $30, though I don't know if the 3-gang layout works for you or not:

http://www.partsexpress.com/pe/pshowdetl...FTOKEN=88094781

Re: speaker wires to short.
dennisdxl32 #155941 01/17/07 01:38 AM
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So are those solder type, or do they have RCA jacks on the backside?


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Re: speaker wires to short.
Ken.C #155942 01/17/07 03:05 AM
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You can just go ahead and splice on some more wire with some crimps or better yet, solder. You shouldnt notice a difference, especially not with surrounds. Dont splice wire without mechanically and electrically making a good connection, like soldering. The "western union" is good for this application. You can see it being done here:

http://www.mmxpress.com/technical/connections.htm

Last edited by Haoleb; 01/17/07 03:10 AM.
Re: speaker wires to short.
RickF #155943 01/17/07 03:25 AM
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Hey Rick,

I may have to build a new shelf unit. I have an old unit I built back in college out of oak. It is very sturdy, however all that is holding up the shelves are those gold colored shelf brackets like this:



They do fine with my Denon 2805, HTPC, CD player, and even my Emotiva Amp right now. However, once I add additional monblocks and 2-channel modules to the chassis it will get very heavy. Currently I'm at about 60lbs with only 2 mono's added. Total weight with 7 mono's is pushing 120lbs.

In regards to the wiring, I guess I was concerned about signal loss or quality loss by having more links in the chain. Right now I have bare wire connections from receiver to speakers.

I was thinking about some of those banana plugs that have a 45degree angle tothem, but I guess I should consider wall plates, and then just add enought cable to go from the wall plate to the amp or Denon.

Thanks for the help..


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: speaker wires to short.
SirQuack #155944 01/17/07 04:31 AM
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Quote:

In regards to the wiring, I guess I was concerned about signal loss or quality loss by having more links in the chain. Right now I have bare wire connections from receiver to speakers.


Worry less, listen more. I'd solder the connections and shrink-wrap them personally... twisting and wire nutting them is nearly as good though.

Bren R.

Re: speaker wires to short.
SirQuack #155945 01/17/07 09:10 AM
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Randy the way we built our shelves was very easy, all the material was bought from Home Depot. I wanted a unit that would haul the mail because at the time I measured the top shelf for a 75 lb Rotel 5 ch amp that I was considering and I wanted the shelf strong enough to hold the weight in the extended position with strength to spare.

Also regarding the wall plates, I referred to several sources (including Alan) about signal loss and was assured that as long as there were good connections no signal loss would occur using the wall plate/plug setup ... after having my system going for over a year now I'll most certainly agree.


Rick
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Re: speaker wires to short.
RickF #155946 01/17/07 09:32 AM
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Anybody ever tested the resistance of solder in a wire splice? I have, the wire went from .1 ohms to .11, not a big difference, so solder away if you want to.


Jason
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Re: speaker wires to short.
jakewash #155947 01/17/07 05:28 PM
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Quote:

Anybody ever tested the resistance of solder in a wire splice? I have, the wire went from .1 ohms to .11, not a big difference, so solder away if you want to.




In the 'data' world, braiding the wire together so that it retains as much symetrical contact as possible is the text book method. The sodder becomes more of an anchor and less required for the conductivity. Alternatively twisting the two wires together at a 90 degree angle to the wire run is considered a bad choice unless you are striclty just wanting electricity or you are hot wiring a car and don't have the time to do a nicer job.

I have no idea how much effect this really has on the travel of audio wavelengths or resistance. Could be just old school textbook rhetoric. I suppose I could test the resistance part......but I'm not gunna.

I can say though that I have seen circuits go down just because the tech didn't squeeze his crymper hard enough on a crymp style connector. The two wires were still definately touching but the difference in how well and how much they contacted was enough that the signal degraded beyond a useful level.

MOre useless facts....See sig.

Last edited by Murph; 01/17/07 05:35 PM.

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