10 Jan
2017
10 Jan
'17
4:54 p.m.
Hi Chris,
On Tue, 10 Jan 2017 08:33:04 -0600, Chris Caudle wrote:
There are multiple circuits commonly used for
symmetrical outputs, some
need the "-" signal left unconnected, some need the "-" signal
connected to the circuit ground, but the optimal location could be at
the receive end, or could be directly at the output connector.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
of the cable output, not the device output?!
I don't have time to test it now [1], but soon or later I'll compare
Tip-Ring-Sleeve jack with Ring unconnected to TS jack or cinch jack.
Tip-Ring-Sleeve jack with Ring connected to TS jack or cinch jack and
with - signal and ground short circuit at the TS jack or cinch jack end.
However, likely connecting Ring with Sleeve by plugging in a TS jack
into the Tip-Ring-Sleeve output socket, IOW short circuit at the
output device is an issue.
I'm sceptic that it makes a difference to connect the - signal with
ground at the receiving device.
Regards,
Ralf
[1]
I've got all required jacks, but only 2 meter headphone cable, no other
cable and I don't want to unsolder jacks from balanced cables I'm
using. I've got TRS socket to TS jack adapters, but unfortunately those
short circuit T with R and not R with S. I don't know what those
adapters are good for. Perhaps for usage on both ends of a balanced
cable, to make it an unbalanced cable by using both wires instead of
just one wire or for converting a stereo signal to mono, by assuming
that all gear usually is short-circuit-proof.