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 Post subject: Magnavox Micromatic Record player Ground Loop bluetooth Help
PostPosted: Aug Mon 28, 2017 10:58 pm 
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Joined: Sep Fri 02, 2016 10:07 pm
Posts: 34
Okay so I have a Magnavox Micromatic Record Player. It's a tube amp, and the inputs for the turntable to the amp are rca jacks, I decided to add an auxiliary wire so I got an rca splitter with a built in switch. Then I had the turn table connected and an auxiliary wire connected to I could play my phone. I noticed when I charged my phone it would cause a ground loop hum, so I decided to try a ground loop isolator and they're not working well. I then bought "eskin bluetooth audio adapter" I plugged the rca wires (with a rca ground loop isolator) into the Bluetooth adapter and I still get a slight hum from the Bluetooth being plugged into the wall. Is there any way I can fix this? There is no ground plug on either devices being plugged into wall, and the hum gets louder when I raise volume on the amplifier.


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 Post subject: Re: Magnavox Micromatic Record player Ground Loop bluetooth
PostPosted: Aug Tue 29, 2017 8:30 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4063
Location: Boston, MA USA
What are the tube types in this phonograph? If it has something like 50C5s, 50L6s, or 50EH5s this means it has a line-operated amplifier with no power transformer. This type of amplifier cannot be connected to an external input.

-David


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 Post subject: Re: Magnavox Micromatic Record player Ground Loop bluetooth
PostPosted: Mar Wed 07, 2018 2:28 am 
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Joined: Sep Fri 02, 2016 10:07 pm
Posts: 34
yes it has 50eh5's, I would like to remove the ground loop if possible? is there any simple solution? or would i have to replace the amplifier as well? what would be a good replacement/upgrade for this amplifier?


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