RE: Using Cat5/Coax/T&E for Subwoofer speaker cable

["Keith Doxey" <ukha@xxxxxxx>]

Hi James,

All will give perfect quality IF the correct signal type is used.

T&E requires a speaker level connection from the output of a meaty
amplifier
to drive a PASSIVE sub.

Co-ax requires an unbalanced signal from a line out to drive the input of
an
ACTIVE sub. Unbalanced can be prone to hum pickup on long runs and can
also
suffer ground loops. The ground loop problem can be cured with an
isolation
transformer.

CAT5 requires a BALANCED line level signal This is what KAT5 uses. If
you
have hifi equipment with Balanced Outputs (not very common on domestic
kit)
and a sub with a Balanced input then all you need is a bit of CAT5
cable.
Failing that you need a set of KAT5 or similar products to perform the
conversion from Unbalanced to Balanced to Unbalanced. This can also be
accomplished using matching transformers.

HTH

Keith

-----Original Message-----
From: James Winspear [mailto:james.winspear@xxxxxxx]
Sent: 30 December 2002 16:50
To: ukha_d@xxxxxxx
Subject: [ukha_d] Using Cat5/Coax/T&E for Subwoofer speaker cable


Hi,

  I'm trying to figure out where to put a subwoofer in my Living
Room
for a Home cinema setup.  The most obvious location only has a
double-gang power socket, and a single gang, twin coax, twin Cat5
socket
- no speaker cable run to here.

  As I understand it, I could technically, run the audio signal
over
T&E, Coax and Cat5 with less-than-perfect quality.

-         Is this the correct
quality order? T&E over Coax (CT125) over
Cat5.



Also, as it's for a sub, don't they all have to be powered?  Which
would
mean that I'd need to use one of the power sockets for power, and that
re-using the other T&E cable for audio would provide rubbish
quality
(hum?) because it'll be run in parallel with the power cable all the
way
back to Node0?



Neither of the coax cables are currently used, could I usefully re-use
one of these to carry the sub signal?  I'm no audiophile (at all!),
but
would this be OK?



Would the coax quality be bettered by using a Kat5 solution (aren't
they
currently more appropriate for AV/video signals not for speakers?)



Thanks



James



[Non-text portions of this message have been removed]


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