If I plug in my TV or games console the right channel is awful, the left seems OK. I've experienced this on two separate amp units, the one I have now is a JVC A-GX2 (quite old by the looks of it) The CD input works perfectly from the same TV/games console source. Any insights? Is it faulty or am I just not using it correctly?
2006-08-05 11:09:00 · 9 answers · asked by Anonymous in Consumer Electronics ➔ Music & Music Players
I suspected it might be for a turn table, I know they produce less of a signal than other stuff. Will check it out, thanks for the answers! If it's still distorted I'll be wanting some answers from you lot ;-)
2006-08-05 11:22:14 · update #1
The phono inputs are still distorted when I use it with a turn table, when I plug the turn table into the CD input it's fine (but quieter), I can just turn the volume up and it's as clear as a bell. So.. what the hell is up with the phono input?!
2006-08-05 23:31:54 · update #2
(ah, how soon we forget...)
Phonograph audio signals have a different impedance than other audio
signals for historical reasons.
I wonder how long it will before nobody has to know that any more.
Microphones also have a different impedance.
2006-08-05 11:12:59 · answer #1 · answered by Elana 7 · 2⤊ 0⤋
The phono input is for a turntable - that's a record player, for those of you too young to remember. The output of a turntable is at a lower level - and different equilization - than the line out from a CD player or game. So if you plug a line-level device into the phono input, you are overloading the amp and will have distortion.
2006-08-05 11:12:47 · answer #2 · answered by nkasoff 3 · 0⤊ 0⤋
A phono input is for a turntable only, its something to do with the way the signal from the turntable needs to be trated differently by the amp I can't remember the full details but I think the signal gets boosted a lot more when it goes through the phono input.
2006-08-05 11:13:41 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It is clear that you are feeding the phono input with a signal which is far too big, as you probably realise by now, and the signal is being clipped either in the phone stage or a subsequent one.
That's why it is distorted.
The input sensitivity of a phono input is a few millivolts.
The amplitude of the signal you are giving it is in the order of tens or hundreds of millivolts.
2006-08-05 13:46:36 · answer #4 · answered by dmb06851 7 · 0⤊ 0⤋
A phono imput has a different impedence to any other type of input for it is specifically for a record player (phonograph) that hasn't got a pre-amp built in. If you are plugging other stuff into a phono socket then that is most likely the reason you are getting feedback.
Although there could be other reasons that haven't occured to me!
2006-08-05 11:16:23 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The Phono Input is not for a TV Or Game Console. It's for a "Moving Magnet Pick-up Cartidge" or a Turntable. That's why.
2006-08-05 11:14:54 · answer #6 · answered by framer_larry 3 · 0⤊ 0⤋
Alternatively, your device (including some more recent record players) has pre-amp built in and that overloads the phono input. Try plugging the player into 'tape'.
2015-12-27 21:59:31 · answer #7 · answered by Wheel 1 · 0⤊ 0⤋
It could be a faulty or poor quality cable.
2006-08-05 11:13:21 · answer #8 · answered by Anonymous · 0⤊ 0⤋
have u earthed the input?
2006-08-05 11:15:24 · answer #9 · answered by assassin of silence 5 · 0⤊ 0⤋