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SoundsGoodToMe's picture
Submitted By: SoundsGoodToMe
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Joined: Jun 5 2012
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Any Amps Have 5.1 Capability ?
Posted: June 5, 2012 - 10:05am

I have an old system for audio only that I am happy with.

Recently I got my first LED HDTV and find the sound from the internal speakers to be pretty pitiful.

I wanted to output the audio from the TV to my audio receiver so I tried a Gefen GTV-DD-2-AA optical Dolby 5.1 to l/r analog audio converter. After going through two of them and a lot of phone calls I gave up on it.

I could buy an av receiver, but I really just want to get the sound to my system speakers.

Does anyone know if any manufacturer makes an audio amp that will take a 5.1 optical input and give me 2 or more speaker connections?

I'll even take an automotive amp and get a 12vdc supply if that will work.

TIA

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jackfish's picture
Submitted By: jackfish
senior member
Location: Western Wisconsin
Joined: Dec 19 2005
Posts:
#1
So I take it the HDTV has no analog audio outputs?
Posted: June 5, 2012 - 12:22pm

What is the make and model of the HDTV?

What is the make and model of your current audio receiver?

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Kal Rubinson's picture
Submitted By: Kal Rubinson
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Joined: Sep 1 2005
Posts:
#2
Get a receiver.
Posted: June 5, 2012 - 1:47pm

Get a receiver.  It is the cheapest way to get 5.1 to the speakers.  Any AVR will provide from 2 to 5.1 or more outputs.

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SoundsGoodToMe's picture
Submitted By: SoundsGoodToMe
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Joined: Jun 5 2012
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#3
Please Don't Laugh Too Hard...
Posted: June 5, 2012 - 7:20pm

TV is LG 42LE5350 optical only audio output Dolby 5.1

Receiver is Onkyo TX-4500

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SoundsGoodToMe's picture
Submitted By: SoundsGoodToMe
member
Joined: Jun 5 2012
Posts:
#4
Is There Anything Not Made In China ?
Posted: June 5, 2012 - 7:20pm

Most of the reviews from users on sites like Amazon.com say that modern AV receivers seem to have a very high infant mortality. Most likely as a consequence of being manufactured in places where quality control is minimal to non-existant. Are there any AV receivers out there that are not made in China ?

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jackfish's picture
Submitted By: jackfish
senior member
Location: Western Wisconsin
Joined: Dec 19 2005
Posts:
#5
That TV has an analog output with a headphone jack.
Posted: June 5, 2012 - 7:45pm

It is on the side panel and labelled H/P with a little heaphone symbol. Get an 1/8" stereo male to RCA male pair (R/L) cable and try it out connected to one of the tape (AUX) inputs of your Onkyo TX-4500.

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SoundsGoodToMe's picture
Submitted By: SoundsGoodToMe
member
Joined: Jun 5 2012
Posts:
#6
Levels ?
Posted: June 6, 2012 - 9:52am

I thought the signal level would be too high and the impedance too low.

Okay, I'll get a 1/8" TRS to RCA Phono jacks adapter and give it a try.

I'll report back.

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jackfish's picture
Submitted By: jackfish
senior member
Location: Western Wisconsin
Joined: Dec 19 2005
Posts:
#7
If you can't get an adequate volume level...
Posted: June 6, 2012 - 1:44pm

Rolls MB35 ProMatch, Technolink TCC TC-780i, etc. But the headphone output should work, but be careful with the volume levels set on both the HDTV and the receiver. Good Luck!

"A typical headphone amp isn't much more than a line amp configured to be able to deliver higher currents into the lower impedances found in most headphones. Headphone impedance will typically range from 8 to 600 ohms, which is we now know is much lower than a line level input. A headphone amp has to be able to deliver the current necessary to drive these phones, but since the drivers are small, and right up against your ears, it doesn't take much voltage to generate the power needed to make them loud enough. If you connect a headphone signal to a several thousand ohm line level input it will behave pretty much like a line level signal. The key here is the voltage. How much voltage does your headphone amp produce? If it's less than 15 or 20 volts there is no danger of it doing any damage to a line input, and almost all headphone outputs found in typical audio gear are substantially less than this." Sweetwater.com Tech Tips 10/6/2000

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