Belden Cable 8412 ?

[Arn C.]

Howdy All,
       I have some Belden 8412 wire (2 conductor shielded microphone wire)  20 AWG(.52 sq mm).   I was wondering if I should use one of the wires  and clip the other off or use both wires soldered together for use as a guitar cable?   

       I know impedance is important as well as the length of the cable being used.   I think I will make 10-15 footers if this helps.

Here are some specs:
ELECTRICAL CHARACTERISTICS : 

Nom. Characteristic Impedance: 52 Ω 
Nom. Inductance: .18 µH/ft 
Nom. Capacitance Conductor to Conductor @ 1 KHz: 30 pF/ft 
Nom. Cap. Cond. to Other Cond. & Shield @ 1 KHz: 55 pF/ft 
Nom. Conductor DC Resistance @ 20 Deg. C: 10.2 Ω/1000 ft 
Nominal Outer Shield DC Resistance @ 20 Deg. C: 3.06 Ω/1000 ft 
Max. Operating Voltage - Non-UL: 600 V RMS 
Max. Recommended Current: 4 Amps per conductor @ 25°C 

Thanks!
Arn C.

[MartyMart]

2 core and a shield ?
Sounds like you could use it for gtr and "ground" one end of the shield for even less noise
IE: Shielded as you would use in an amp or stompbox for less noise.

MM.

[Arn C.]

Thanks Marty for the info on your idea!


Peace!
Arn C.

[lumpymusic]

... Belden 8412 wire (2 conductor shielded microphone wire)  20 AWG(.52 sq mm).
I was wondering if I should use one of the wires  and clip the other
off or use both wires soldered together for use as a guitar cable?   
...
Here are some specs:

Nom. Capacitance Conductor to Conductor @ 1 KHz: 30 pF/ft 
Nom. Cap. Cond. to Other Cond. & Shield @ 1 KHz: 55 pF/ft 

That conductor to other cond & shield capacitance is
pretty high. I would expect some high freq loss.

I've done it and seen exactly that. A built in HF rolloff
filter. Works fine as a jazz cable with a 175 with traditional
jazz tone. Might not be what you want for rock.


Lumpy
--
Did you do a lot of those Emergency Broadcast Warnings?
Yes. Had it been an actual emergency, I would have had told you.
www.lumpyvoice.net

[lovekraft0]

That conductor to other cond & shield capacitance is
pretty high. I would expect some high freq loss.

8412 was designed for balanced 600 ohm use, where the capacitance isn't as much of an issue. There are definitely better choices available, but you could do a lot worse.

[George Giblet]

I agree with lumpymusic that capable capacitance is on the high side - but it's not toooo bad either.
For example compare it to the Canare L-2T2S at 33pF/ft, the Belden is 1.7 times higher so it can only go 1/1.7 the length.

Since you have the cable you might as well use it.

See,
http://www.diystompboxes.com/smfforum/index.php?topic=39439.0

For your cable with 55pF/ft,

220pF: 4ft         
470pF: 8.5ft
1nF:    18ft

So 10ft is good but 15ft is getting on the high side.  Two 10ft in series using a True-Bypass effect will go over 1nF.