I have my amp plugged into my Samsung TV via the headphone output jack.
Without anything plugged into my amps phono sockets there is a tiny amount of noise, you really can barely hear it with your ear right on the tweeter.
As soon as its plugged into the TV there is electrical noise, it doesn't seem like a ground loop because its not a constant hum plus the amp and tv are in the same socket so no such loop exists. It just sounds like EMI or similar. its not volume related, just a set level of noise.
When watching TV with zero volume the noise is audibly louder when SD channels are selected compared to HD channels.
I know most would just suggest a DAC... I've tried this...zero noise! but it seems to "sterilise" the sound to me, similar to comparing CD to vinyl, it also added a small time delay that drove me mad watching films. Only the more pricey DACs seem to come with time delay functions.
so, can anyone suggest anything to tackle this noise issue?
Worth trying a ground loop isolator??
Without anything plugged into my amps phono sockets there is a tiny amount of noise, you really can barely hear it with your ear right on the tweeter.
As soon as its plugged into the TV there is electrical noise, it doesn't seem like a ground loop because its not a constant hum plus the amp and tv are in the same socket so no such loop exists. It just sounds like EMI or similar. its not volume related, just a set level of noise.
When watching TV with zero volume the noise is audibly louder when SD channels are selected compared to HD channels.
I know most would just suggest a DAC... I've tried this...zero noise! but it seems to "sterilise" the sound to me, similar to comparing CD to vinyl, it also added a small time delay that drove me mad watching films. Only the more pricey DACs seem to come with time delay functions.
so, can anyone suggest anything to tackle this noise issue?
Worth trying a ground loop isolator??
"phono sockets". If this is a true phone input, that's the wrong place to plug your TV in. Phone input is in th millivolt range, while "line" input is 1 to 2 volts. Plug into an AUX or TAPE input.
The only two audio outputs are the toslink optical and the headphone jack.
Not sure about the headphones, i'll try them out and report back, I'm guessing because of the high impedance this noise would be massively reduced......?
Not sure about the headphones, i'll try them out and report back, I'm guessing because of the high impedance this noise would be massively reduced......?
Could be that the TV has a class-d headphone amp and when you plug an amplifier in the carrier gets modulated down or causes other oscillation in the amp.
Yes, it's present with headphones too!
It sounds like my TV has a tiny R2D2 inside it lol!
Worth getting something like the Mpow Ground loop isolator?? or even try to clean up the power supply AC with a Tacima CS947?
It sounds like my TV has a tiny R2D2 inside it lol!
Worth getting something like the Mpow Ground loop isolator?? or even try to clean up the power supply AC with a Tacima CS947?
Use a DAC. Almost all video sound is multichannel. At least 5.1. What your listening to is a down mix to 2 channels. Would you down mix stereo to mono? Check your tv for audio delay adjustment. What you want to delay is the video to match the DAC processing delay.
If you hear it with headphones it's not ground loop. And if it changes with picture it's probably video processing noise (digital) leaking into the audio path.
When a Brit says "phono" he may be referring to what Americans call 'RCA'.jplesset said:
Some TVs have an adjustable time delay. It would need to be a rather bad DAC to deliver sound which is worse than a TV, but there is no accounting for taste.onis_uk said:
That means a small loop, not no loop.
You are probably hearing some combination of ground loop, Class D switching noise and video processing noise.
Did you even read my post? I've tried a DAC and it sounds crap in my opinion, I don't want 5.1 and only have a 2ch setup.
You seem very rude for a Canadian... most odd.
No, it cant be heard out of the TV speakers in the back of the TV. Only seems to come from the headphone jack.
Dunno, maybe the audio output path takes inside the TV goes near to noisy things like power supply etc......?
TV's are noisy places for sure. The sound on mine is awful. Sound quality is not very high on the list of priorities. It does seem strange that it's so much worse on the headphones. Can you hear any change on headphones if you move the plug, I'm wondering if it's a poor connection?
No it really sounds digital to me, dont get me wrong its not like mega loud but its audible to me. Even over low sound at sitting/viewing distance. My partner says she cant hear it but she doesn't hear the door bell sometimes lol
Would be good to record it but I dont think I can upload an mpg here can I?
Would be good to record it but I dont think I can upload an mpg here can I?
Wow.....I've just found the problem, talking of ground loops, I ruled out the aerial because the noise was present on all outputs av and dvd etc....just unplugged the aerial and boom quiet as a mouse!!!!
That says to me that they have run the audio signal very close to the UHF signal path, poor show Samsung!
Crazy.
That says to me that they have run the audio signal very close to the UHF signal path, poor show Samsung!
Crazy.
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Doubt its that really. Are you in a flat or have an aerial booster? Sometimes aerial sockets get grounded.
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