On 28/10/2020 13:58, Andrew wrote:
On 27/10/2020 19:48, John Rumm wrote:
On 27/10/2020 18:16, pinnerite wrote:
I am not sure if this is the correct NG but here goes.
I have a vintage Techics Hi-fi system that has stood idle since the
arrival of widescreen TV, mainly because it is on the opposite side of
the room.

The TV is connected to a computer that runs Mythtv an serves as an HTPC.
It has a cheap 3-speaker pc system that is an improvement on the TV's
speaker but is in no way "good".

We plan to move and I wondered if the hi-fi system could be geared to
the
TV and /or computer.Â* I am uncertain as to the best way to connect up.

Inputs to tha ampifier are all phono sockets.

Yup in theory fine, as long as the amp has some spare inputs and you
can get a suitable line level signal to feed them. Note that the PC
will see the audio device on the end of the HDMI lead and its own
analogue outputs as separate audio output devices, so you may need to
switch between them if swapping from TV to HiFi audio.

(or take a feed to the amp from the the TV to capture whatever its
"playing". Sometimes this may need to be via a optical to phone
converter since not all modern TVs have analogue audio outputs for
some daft reason, but most have a SPDIF / Toslink out)

Lip Sync ?.

Not a problem if you are taking the feed off the TV itself. The delay in
the optical to DAC converter is at most a few us.

I have a Denon mini hifi system upstairs in my computer room/office
and a 20? YO Phillips cassette/radio in the kitchen. If both are on
and tuned to the same BBC FM channel I can hear that they are out
of sync for some reason.

Are you sure one of them isn't on DAB or using a DAB digital tuner of
some sort for FM reception which introduces an interesting delay on
programme content (as well as being highly inefficient).

Most noticeable when the pips are on the hour and you can hear more than
one tuner in different rooms. A classical FM decoder should produce a
radio output with at most a few us timing error.

--
Regards,
Martin Brown