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How to connect Technics AV system with Plasma TV ?

C

cadena

New Member
Hi everyone,

I have a LG PT85 TV and a Technics SE-CA10 audio system (see manuals links attached). I am trying to see how to connect the TV to the audio system but as you can see in pg. 7 of LG manual, the only port for Audio OUT is for an optical cable as further explained in pg. 22-23 of LG manual. However, in the External Units connection in pg. 8 of Technics Manual, there is no port for an optical cable IN. Therefore can someone help me out in which way/s I can connect my TV to my audio system if any ? I would really appreciate your help.

LG TV Manual: https://drive.google.com/file/d/1PVqWO_j3c7bpUH_RveYl9MQyGb_RVq33/view?usp=sharing

Technics Audio System Manual: https://drive.google.com/file/d/1GHdJAK1duKEyH84fygWQZJdKnvZQGJY-/view?usp=sharing


P.D. Is my system a 5.1 home cinema since it has 5 speakers ? And if so is there a way for my TV to make use of this feature ?
 
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the skipper said:
a converter like this looks like it will do the trick.
https://www.amazon.com/AMANKA-Amanka-DAC05-Digital-Analog/dp/B01MTPG6WX/ref=sr_1_11?crid=3FQ5FRADXX69L&dchild=1&keywords=optical+digital+to+analog+audio+converter&qid=1622073652&s=electronics&sprefix=optical+digital+to+analog+,aps,196&sr=1-11
Click to expand...
Thanks a lot for your reply @the skipper. It seems the device you've mentioned would be the thing I'm looking for. Do you you know if it would allow me to use all 5 speakers ?
 
You probably won't get surround out of it, just two channels. You would need a device that downconverts Dolby Digital to Pro-Logic, and I don't know how common that is these days. That's assuming that the TV passes surround sound out of the optical input, which isn't a given for anything other than the built in tuner (or apps, if it has them). Pro-Logic, the only surround format that your sound system is compatible with, has been obsolete for about 25 years.

ETA: it looks like the actual system is the SC-CA10, the SE-CA10 is just the amplifier. Do you have the entire system?
 
That audio system is only Dolby Pro Logic, which tries to extrapolate 4 channels from a two channel signal. not the current digital frmats. That technology died in the early 90's/
 
Do you want to do this because you have your TV connected to an antenna for broadcast signals? If you're not doing this and you have cable, you're probably better off connecting the audio outs from your cable box to your audio system.

If you have to connect the TV, use one of those little converters. Stereo output from an optical or HDMI input will downmix all the surround channels to two, which the Dolby Pro Logic will extract surround from. It won't be exactly what the original surround was, but it will use all the channels.
 
Hi everyone, I would like to thank you for your replies. If I can't get full surround sound then I will have to think about it. I was interested in getting the whole experience. Nonetheless, I might take it into account in the future if I want to use the R/L speakers.
 
You would get matrixed surround based on what your stereo/surround system can provide, which is Dolby Pro Logic.

If you want discrete surround such as Dolby Digital you will need a newer surround processor. If you want the newest stuff like ATMOS, you'll an even more current/newer yet surround processor.
 
I don't think they'll get matrixed sound, will they? Are the matrix signals still present in dolby digital programming?
 
Tell us a bit more about your system. Do you have an external tuner, Cable TV or Satellite box, a TIVO recorder or anything like that?

Many of us have some kind of front end device like a home theater receiver that we feed the audio and Video from our TIVO or Cable box,
our DVD player, Firestick, or similar streaming device, and use that to switch sources; and the audio out from there goes directly to amps and speakers. Many of us do not worry about pulling audio out of the TV .
I am not trying to be snarky. I have a 70 Sharp Aquos TV that's just a big monitor on the wall, and I have a 9 year old Integra preamp/processor that does the signal switching and sorts out all the multichannel data to feed to amps and speakers. It will do Dolby and THX 5 and 7 channel audio (Disney stuff is all 7 channel now). But it does not do the latest/greatest Atmos "height-based" signal processing - but I don't need that at home.

You can get something like a few year old Yamaha AVR to manage all that multichannel processing stuff and not be stuck with stereo out of your TV.

From what I can see, the Technics SE-CA10 is a STEREO mini-component system.
What do you have running the 5.1 speakers you mentioned?


cadena said:
Hi everyone,

I have a LG PT85 TV and a Technics SE-CA10 audio system (see manuals links attached). I am trying to see how to connect the TV to the audio system but as you can see in pg. 7 of LG manual, the only port for Audio OUT is for an optical cable as further explained in pg. 22-23 of LG manual. However, in the External Units connection in pg. 8 of Technics Manual, there is no port for an optical cable IN. Therefore can someone help me out in which way/s I can connect my TV to my audio system if any ? I would really appreciate your help.

LG TV Manual: https://drive.google.com/file/d/1PVqWO_j3c7bpUH_RveYl9MQyGb_RVq33/view?usp=sharing

Technics Audio System Manual: https://drive.google.com/file/d/1GHdJAK1duKEyH84fygWQZJdKnvZQGJY-/view?usp=sharing

P.D. Is my system a 5.1 home cinema since it has 5 speakers ? And if so is there a way for my TV to make use of this feature ?
Click to expand...
 
swechsler said:
I don't think they'll get matrixed sound, will they? Are the matrix signals still present in dolby digital programming?
Click to expand...

Afaik, regardless if the source contains Dolby Surround, I believe the Pro Logic system will create surround effect from any 2ch source. Not all that great of surround, but something.

I think Dolby Pro Logic II will even create surround effect from a mono input.
 
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