Reccomendations for buying bilk dual coax, for making Insert cables

[anotherjim]

Have you tested the crosstalk issue with ordinary twin & screen? As send & return signals are usually versions of the same signal, a little bleed may not be noticeable. I'm also wondering if designing so that send & return signals are 180deg out of phase, common mode pickup may be rejected?
If you can get away with twin screened, you need a small OD to fit the 3.5mm plug - so Lavalier mic cable? I found one at a UK distributor.
http://www.canford.co.uk/MOGAMI-LAVALIER-MIC-CABLE

[tubegeek]

Our school has a similar cable as a lab project: mini-TRS to 2, 1/4" TS'es. Only difference is we don't use the right-angle TS'es.

The shop must've run into the same problem, because they got us twin 2-conductor, with foil shield in each of the twin leads. It's a BITCH to fit into the mini-TRS and then you have the problem of what to do with the spare conductor.

So I wouldn't recommend that approach, it's very much suboptimal.

[PeterPan]

Best-Tronics hasaudio 'zip-cord' cable ... http://btpa.com/CA-0353.html

Thanks! That is pretty near exactly what I'm looking for. A little pricy for the specs, but a good start.

[GGBB]

Best-Tronics hasaudio 'zip-cord' cable ... http://btpa.com/CA-0353.html

Thanks! That is pretty near exactly what I'm looking for. A little pricy for the specs, but a good start.

Outer size 0.2x0.4" - that's pretty thick stuff for a mini connector, no?

[PeterPan]

Have you tested the crosstalk issue with ordinary twin & screen? As send & return signals are usually versions of the same signal, a little bleed may not be noticeable. I'm also wondering if designing so that send & return signals are 180deg out of phase, common mode pickup may be rejected?
If you can get away with twin screened, you need a small OD to fit the 3.5mm plug - so Lavalier mic cable? I found one at a UK distributor.
http://www.canford.co.uk/MOGAMI-LAVALIER-MIC-CABLE

I'm really concerned about crosstalk because in my case, I'm making something like a "looper".  Perhaps for something benign like a chorus pedal or digital delay, a little leakage wouldn't be noticeable.  But imagine an "insert" cable going to and from something with lots of gain and high harmonics like a distortion pedal. In a case like that, I wouldn't be surprised if running the input and output side by side in the same cable caused oscillation, due to the capcitiove coupling.

[PeterPan]

Best-Tronics hasaudio 'zip-cord' cable ... http://btpa.com/CA-0353.html

Thanks! That is pretty near exactly what I'm looking for. A little pricy for the specs, but a good start.

Outer size 0.2x0.4" - that's pretty thick stuff for a mini connector, no?

I noticed that myself. And of course I don't have the benefit of being able to mold my ends. It might work if the ends were stripped, and encompassed the end going into the connector with a single piece of heat shrink. It leads me to believe though that a similar cable where the side by side thickness was more like 0.2 (total), it would probably be a less pricy cable and perform equally for short runs. I'm thrilled somebody makes this stuff, but Maybe i should just hold off a bit longer and see what else turn up.  

Here's a similar product on a UK site, someone let me know about on another forum.

http://cpc.farnell.com/1/1/67612-cable-audio-2-core-screened-black-100m-pp0026-pro-power.html

That price, converted to USA $, doesn't seem bad at all for a 300M reel, and it size is 2.8MM x 5.6MM, which translates into about 1/2 the thickness of that CA_0353 stuff from "best trionics". Trouble is, they don't seem to have any mechanism for filling a USA order from their UK business. 

[GGBB]

What is a "spiral individual braid?" Seems like a contradiction as a spiral shield and a braided shield are two different things. Do they mean spiral individual shield?

[PeterPan]

What is a "spiral individual braid?" Seems like a contradiction as a spiral shield and a braided shield are two different things. Do they mean spiral individual shield?

As far as I can tell, its not a "braid". They just spread out the strands of the shield conductor and spirally wrap it around the insulated inner conductor, and they claim 50% coverage. A lot of inexpensive cables are built that way, and they work well as long as you're not routing 10 feet of it though electrically noisy equipment.

[R.G.]

I don't have the benefit of being able to mold my ends.

Why not? Check out the molding compounds at Micro Mark.

[tubegeek]

hey - do you absotively, posilutely need the right-angle plugs? Because Monoprice has 'em for - well, you take a look at the price:

http://www.monoprice.com/Product/?c_id=115&cp_id=11509&cs_id=1150905&p_id=601040&seq=1&format=2

[PeterPan]

hey - do you absotively, posilutely need the right-angle plugs? Because Monoprice has 'em for - well, you take a look at the price:

http://www.monoprice.com/Product/?c_id=115&cp_id=11509&cs_id=1150905&p_id=601040&seq=1&format=2

There's no right angle plugs there, and those 1/8" plugs ate too big for my project. But thanks for the tip.