Mildly OT as the wiring is for car audio, but I suspect I might get a bit
more sense here.

I'm going to be fitting some speakers, a subwoofer and an amplifier to my
car. The subwoofer is there due to the near impossibility of getting deep
bass out of the ordinary speaker fittings present, not to test the fixings
of the interior trim.

The recieved wisdom is to run all your phono cables carrying audio signals
down one side of the car, and on the other side of the car to run your power
cable. This is supposed to stop crosstalk to the line level cabling from the
power wires. A fairly typical car amp can draw 25-50A, so it's a pretty
beefy cable, carrying a lot of power. However, all your wires eventually
have to meet at the amplifier, and as mine's going to be under a seat or
inside the quarter panel rather than in the boot, that's going to mean very
long wires going around the edge of the carpet. Obviously speaker cabling
has to be run from the amplifier to the speakers - could this also be
influenced by crosstalk?

Has anyone got any idea if there's likely to be an actual problem if I route
all my wires down the same side of the car? I'm going to be making my own
phono cables, so any recommendation of types of cable that are particularly
well screened would be helpful.

Doki wrote:
Mildly OT as the wiring is for car audio, but I suspect I might get a
bit more sense here.

Well, I don't know what's going down in uk.rec.audio.car - been a while
since I stepped in that...

I'm going to be fitting some speakers, a subwoofer and an amplifier to
my car. The subwoofer is there due to the near impossibility of getting
deep bass out of the ordinary speaker fittings present, not to test the
fixings of the interior trim.

I went to the expense of fitting an amp, bought some dynamat (unused)
for the doors, got a woofer (unused) for the boot, found some wood for
the speaker cabinet (also unused). Ran some fancy crossovers and
individually placed front woofers and tweets..

Above unused components came about since I realized how much of a prat
I'd look booming around my local neighbourhood, how it would make my
attention to driving worse and how it all fitted would make my car a
prime target for all the local prats who'd want to lift it all off.

Has anyone got any idea if there's likely to be an actual problem if I
route all my wires down the same side of the car?

Well, there is experience of many that it is not a good idea. But if it
makes it a challenge why not tape some cables down with sticky tape and
try it out?

--
Adrian C

"Adrian C" wrote in message
...
Doki wrote:
Mildly OT as the wiring is for car audio, but I suspect I might get a bit
more sense here.

Well, I don't know what's going down in uk.rec.audio.car - been a while
since I stepped in that...

I'm going to be fitting some speakers, a subwoofer and an amplifier to my
car. The subwoofer is there due to the near impossibility of getting deep
bass out of the ordinary speaker fittings present, not to test the
fixings of the interior trim.

I went to the expense of fitting an amp, bought some dynamat (unused) for
the doors, got a woofer (unused) for the boot, found some wood for the
speaker cabinet (also unused). Ran some fancy crossovers and individually
placed front woofers and tweets..

Above unused components came about since I realized how much of a prat I'd
look booming around my local neighbourhood, how it would make my attention
to driving worse and how it all fitted would make my car a prime target
for all the local prats who'd want to lift it all off.

I've done my sums and with the enclosures available in a car, the speakers
will hit -3db at something like 120-130Hz IIRC. That's why a sub's required.
Booming around is not the intention.

In article ,
Doki wrote:
Has anyone got any idea if there's likely to be an actual problem if I
route all my wires down the same side of the car? I'm going to be
making my own phono cables, so any recommendation of types of cable
that are particularly well screened would be helpful.

Some of the better makes used balanced interconnection. That removes
pretty well any likely problems. Not that difficult to adapt unbalanced
gear to balanced if you encounter problems.

--
*Is there another word for synonym?

Dave Plowman London SW
To e-mail, change noise into sound.

"Dave Plowman (News)" wrote in message
...
In article ,
Doki wrote:
Has anyone got any idea if there's likely to be an actual problem if I
route all my wires down the same side of the car? I'm going to be
making my own phono cables, so any recommendation of types of cable
that are particularly well screened would be helpful.

Some of the better makes used balanced interconnection. That removes
pretty well any likely problems. Not that difficult to adapt unbalanced
gear to balanced if you encounter problems.

Aha. Not that difficult sounds like "a pain in the neck" if I can easily
avoid the problems by careful cable routing. I didn't realise there were
problems with normal unbalanced cables for normal use, although I suppose a
car is a pretty poor environment for wires. AFIACS I'd have to be spending
serious money to get kit that used balanced connections.

In article ,
Doki wrote:
Some of the better makes used balanced interconnection. That removes
pretty well any likely problems. Not that difficult to adapt unbalanced
gear to balanced if you encounter problems.

Aha. Not that difficult sounds like "a pain in the neck" if I can easily
avoid the problems by careful cable routing. I didn't realise there
were problems with normal unbalanced cables for normal use, although I
suppose a car is a pretty poor environment for wires. AFIACS I'd have
to be spending serious money to get kit that used balanced connections.

It depends just how much low level stuff you're routing to the back. If
only a sub feed a pair of 5 quid transformers will do it.

--
*Lottery: A tax on people who are bad at math.

Dave Plowman London SW
To e-mail, change noise into sound.

"Dave Plowman (News)" wrote in message
...
In article ,
Doki wrote:
Some of the better makes used balanced interconnection. That removes
pretty well any likely problems. Not that difficult to adapt unbalanced
gear to balanced if you encounter problems.

Aha. Not that difficult sounds like "a pain in the neck" if I can easily
avoid the problems by careful cable routing. I didn't realise there
were problems with normal unbalanced cables for normal use, although I
suppose a car is a pretty poor environment for wires. AFIACS I'd have
to be spending serious money to get kit that used balanced connections.

It depends just how much low level stuff you're routing to the back. If
only a sub feed a pair of 5 quid transformers will do it.

A sub and a the front speaker signal. The headunit does the filtering.