[geeks] T-3 Coax as Audio Cable

[Jochen Kunz]

On Fri, 05 Oct 2007 11:58:38 -0400
Sridhar Ayengar <ploopster at gmail.com> wrote:

> The cable is already terminated in BNC, so I was just planning on
> using  some BNC->RCA adapters.
Hmmm. Take a look at the wiring of these adapters. If you do it that way
you shoud connect the shield of the coax to GND and use one inner coax
wire for each of the two symetrical signals.

> Microphones run at even a lower signal level than line-level, no?
IIRC yes. But good microphones have build in preamps to boost the low
signals before they hit the wire.

> but is there anyone out there making coaxial cable
> capable of carrying 150W RMS signal?
??? 150W RMS on coax is nothing special. Even RG213 should be capable to
carry that load. AIRCOM PLUS can carry 5.5 kW at 10 MHz and 1275 W at
100 MHz. How else will you get the power from a transmitter to the
antenna? Waveguide? For 80m or 40m short wave?

> I also already know about that
> overpriced twisted pair speaker wire out there.
You can use ordinary 68 pin TP flat ribbon cable for speakers. Not the
HD variant, as knowen from UW-SCSI, the older with 1/20" spacing. IIRC
SMD used this cable.
--


tsch|_,
       Jochen

Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/