Good morning,
I've recently bought an Audio-Technica turntable (it should arrive next week) so I decided to retrieve my father's integrated amplifier. It's a Sony LBT-V701, about 20-25 years old, which apparently worked just fine the last time it was used. However, when I plug my smartphone or my Echo Dot into it, the sound that comes through the speakers is either low (when plugged into the CD inputs -there're no AUX input) or crackling (when plugged into the PHONO inputs). I'm using a 3.5 mini-jack and 2x RCA cable. I've tested it with two different pairs of speakers (both came with mini HiFi systems), that work perfectly well except with the amplifier.
I'm not precisely an expert in audio systems, just an amateur, so maybe I'm missing something here. Just to let you know: (1) the volume both in the phone and the amp was turned max; (2) the amp doesn't have a tape monitor switch.
Thank you in advance.
I've recently bought an Audio-Technica turntable (it should arrive next week) so I decided to retrieve my father's integrated amplifier. It's a Sony LBT-V701, about 20-25 years old, which apparently worked just fine the last time it was used. However, when I plug my smartphone or my Echo Dot into it, the sound that comes through the speakers is either low (when plugged into the CD inputs -there're no AUX input) or crackling (when plugged into the PHONO inputs). I'm using a 3.5 mini-jack and 2x RCA cable. I've tested it with two different pairs of speakers (both came with mini HiFi systems), that work perfectly well except with the amplifier.
I'm not precisely an expert in audio systems, just an amateur, so maybe I'm missing something here. Just to let you know: (1) the volume both in the phone and the amp was turned max; (2) the amp doesn't have a tape monitor switch.
Thank you in advance.
Download-
SONY TA-V701 POWER AMPLIFIER Service Manual download, schematics, eeprom, repair info for electronics experts
Its got -
phono in=3mv/50k
video in=200mv/50k
CD in=200mv ( very high sensitivity considering CD output is 2 V RMS )
tape in=200mv/50k
mic in 1mv/10k
Crackling is usually either a dirty input connection or a noisy volume control but also could be an internal fault but what you must try first is move the input switches in and out to try to clean the contacts to see if that's the fault first.
SONY TA-V701 POWER AMPLIFIER Service Manual download, schematics, eeprom, repair info for electronics experts
Its got -
phono in=3mv/50k
video in=200mv/50k
CD in=200mv ( very high sensitivity considering CD output is 2 V RMS )
tape in=200mv/50k
mic in 1mv/10k
Crackling is usually either a dirty input connection or a noisy volume control but also could be an internal fault but what you must try first is move the input switches in and out to try to clean the contacts to see if that's the fault first.
Thank you, Duncan. Two questions, though:
1. Given the characteristics of the inputs, which one is the fittest for plugging Alexa?
2. Since I have almost no experience manipulating this kind of devices, do you consider cleaning the contacts easy enough?
1. Given the characteristics of the inputs, which one is the fittest for plugging Alexa?
2. Since I have almost no experience manipulating this kind of devices, do you consider cleaning the contacts easy enough?
If moving them constantly doesn't do the job you can buy electrical switch cleaner .
Try the Tape or Video inputs ,DON'T use the phono unless you are directly connecting the turntable.
Amazon.com : electric switch cleaner
Try the Tape or Video inputs ,DON'T use the phono unless you are directly connecting the turntable.
Amazon.com : electric switch cleaner