Peter Wieck wrote:
> On Mar 9, 12:16 am, willbill <t...@[EMAIL PROTECTED]
> wrote:
>
>> i pulled down the .pdf spec file and it shows
>> 19 strands. for 12 gauge, i wouldn't call it
>> "fine-stranded"
>>
>> once you've twisted two pieces together (as you
>> outlined above), how flexible is it?
>>
>> do you do the twist the same way that Monster
>> does with their speaker wire?
>>
>> all ears, bill
> THHN comes three ways: Solid, 7 strands @[EMAIL PROTECTED]
12Gauge and 19 strands @[EMAIL PROTECTED]
> 12Gauge. Hence the "fine". The "fine-stranded" is also annealed a bit
> better than the 7-strand version and is therefore somewhat softer. But
> keep in mind with THHN, the insulation system is pretty stiff as well.
THHN has two layers of plastic type insulation. given that
it adds to the overall stiffness, why on earth did you go
with THHN?
i mean, the .pdf file also shows MTW, which is only one layer
of insulation, and specifically states that the copper
is "bare annealed copper" per the same specs as the THHN
> It is not nearly so flexible as zip-cord
> (a bunch cheaper than 12Gauge zip if one can even find it)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
agreed that the attraction is decent 12 gage
at a low price!
> but in most applications, that is an
> advantage as it stays where-put. One can also pull on it pretty hard
> and against edges and around turns without risk of damage, an
> advantage when running in wall cavities or under floors.
odds are you won't find any cats or dogs there! :)
mice are a (the?) key enemy of construction wiring insulin
>
> I do not do a tight spin, figure I am taking up about 10% of the
> length in the twist (one foot in ten), that comes to about 10 twists/
> foot. I am looking for manageability, not some sort of electrical
> magic. At audio frequencies there is not much going on there anyway.
> My longest run to-date has been 16 feet of wire reaching about 11 feet
> overland. We are moving, so my next set up will have substantially
> longer runs in one case, we shall see.
>
> I have been known to put a reverse twist on the left wire - the drill
> is a reversing type. But that is so I can say I did, no other reason.
i tend to agree that the direction of the twist
is unlikely to make any sound difference that
you can hear
given that the 19 strand 12 gage stuff you are
talking about has a twist of it's own, did you
find that the two strands were equally easy
to twist, regardless of which way you went?
fwiw, one of the things i did roughly 15/20 years
ago was to get some 18 gage solid hook-up wire
(single strand) with vinyl insulin. (Radio Shack,
i'm looking at a spool of it right now)
i used a drill, like you did, to twist it,
and made two lengths for my L/R speakers
(i wasn't doing surround like i am today)
i was more than a little surprised by how
decent it sounded (not unlike the title
of this thread)
i was in L.A. at that time and had easy
access to at least 4 large electronic
parts stores
anyway it was only later that it occurred
to me that the twist might make a diff,
and that if that were true then having
the copper strands as close to each other
as possible might be the way to go
while browsing one day, i saw some spools
of shellac coated 16 gage solid copper
(1 strand)
i actually made some speaker wire from it,
but after a couple of weeks grew increasingly
nervous about the risk of having a short
and blowing an amp
wow was that stuff stiff, and i didn't pull
on it nor bend it any more than i had to
bill
>
> Peter Wieck
> Wyncote, PA
|
