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-   -   cable gauge to build Neutrik Speakon (http://www.diyaudio.com/forums/subwoofers/220417-cable-gauge-build-neutrik-speakon.html)

dtses 26th September 2012 08:11 AM

cable gauge to build Neutrik Speakon
 
cheers!

a quick question. I've got a plug NL4FX and need 1.5-2m of cable to connect my REL Quake to the amp. Is there any point using OFC shielded cable for this purpose? Also what is the minimum gauge to use, will 2x0.25mm2 (AWG23) be enough?

weltersys 26th September 2012 08:41 AM

Quote:

Originally Posted by dtses (Post 3179408)
cheers!

a quick question. I've got a plug NL4FX and need 1.5-2m of cable to connect my REL Quake to the amp. Is there any point using OFC shielded cable for this purpose? Also what is the minimum gauge to use, will 2x0.25mm2 (AWG23) be enough?

Shielded cable is not needed, and may present problems with speaker cable.
AWG23 is extremely whimpy for sub use (alright for mic cable at 600 ohms) unless you are using 64 ohm speakers, use a minimum of 16/14 AWG at 4 ohms for 2 meters if you care about damping factor.

If you like your subs to go "duhhh duhhh duhh" use any strand of wire you find around :^).

If you have difficulties wiring proper size cable into a small connector, reduce the cable size at the junction point.

ianpengelly 26th September 2012 11:35 AM

IIRC the REL speakon input is a high impediance input design to allow a speaker level connection to drive the internal amp circuit of the sub. Very little current will pass through this connection, so the speaker wire you have suggested should be fine and I wouldn't worry about it being shielded.

dtses 26th September 2012 12:53 PM

thanks for prompt replies!

Now I'm confused completely :D
Perhaps the best way would be to try this ofc shielded mic cable vs some simple thich one.
Should I aim for minimal noise from REL once Neutrik plug is connected and other ends are bare?

vacuphile 26th September 2012 01:09 PM

Quote:

Originally Posted by ianpengelly (Post 3179591)
IIRC the REL speakon input is a high impediance input design to allow a speaker level connection to drive the internal amp circuit of the sub. Very little current will pass through this connection, so the speaker wire you have suggested should be fine and I wouldn't worry about it being shielded.

No, that is XLR; speakon is to deliver current to the drivers. You need the same gauge as you would normaly use for speaker connections.

vac

dtses 26th September 2012 01:49 PM

cheers!

mattlong8 26th September 2012 05:50 PM

In the US the maximum type of cable that will fit in that connector easily is the 12/4 SJOOW. But if you bore out the strain relief nut a bit and remove the u shaped metal tangs held in by the screws one can fit the 10/4 SJOOW. This is not a fast process bear in mind. The "J"version(sjoow) as opposed to SOOW is rated at 300V as opposed to 600V. Local regulations regarding the different use of such cables varies and often times there is no standard for their "low voltage" use as we intend. To get a little more flex the cable class "SC" or stage cable is quite nice. I believe it has more braids per individual wire. Please note that these are US standards and I have no knowledge if they apply elsewhere but I'm sure a bit of research could yield a corresponding cable in your country.

-Matt

dtses 27th September 2012 07:14 AM

it's pretty clear now with the cable! thank you!

Just curious, if I use speaker terminals of my amp, does it mean that REL uses only preamp section?
Also as far as I've understood connecting sub via high level input makes additional load for the amp, isn't it?

PAGS 28th September 2012 01:19 AM

Quote:

Originally Posted by vacuphile (Post 3179687)
No, that is XLR; speakon is to deliver current to the drivers. You need the same gauge as you would normaly use for speaker connections.

vac

You may be right, but the Speakon cable connection provided by REL with a new subwoofer would seem to contradict this theory. The cable is 10 meters long - that's almost 35 feet! It has the Neutik Speakon connector on one end, which connects to the sub, and three bare wire connections on the other end. The bare wires connect to the L and R amplifier speaker terminals. The thickness of the individual wires appears to be smaller than 16 gauge (18 maybe?). According to the REL manual using the Speakon connection "is the preferred method of connecting a REL to any system."

REL is considered to be a higher end manufacturer of hifi stuff, and the company's not shy about putting big price tags on the equipment it sells. I'm no sound engineer, but I believe that if there were any meaningful signal degradation associated with the thin-wired, long cable Speakon connection the company wouldn't be selling it, or at least it wouldn't be promoting it as the "preferred method" of connection.

My non-technical newbie comments, for what they're worth.

JapanDave 28th September 2012 03:24 AM

Quote:

Originally Posted by mattlong8 (Post 3180038)
In the US the maximum type of cable that will fit in that connector easily is the 12/4 SJOOW. But if you bore out the strain relief nut a bit and remove the u shaped metal tangs held in by the screws one can fit the 10/4 SJOOW. This is not a fast process bear in mind. The "J"version(sjoow) as opposed to SOOW is rated at 300V as opposed to 600V. Local regulations regarding the different use of such cables varies and often times there is no standard for their "low voltage" use as we intend. To get a little more flex the cable class "SC" or stage cable is quite nice. I believe it has more braids per individual wire. Please note that these are US standards and I have no knowledge if they apply elsewhere but I'm sure a bit of research could yield a corresponding cable in your country.

-Matt

I got 10 gauge to fit without taking the u shaped metal tangs. It was an effort, but I eventually got in.


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