If I have amp schematics can anyone look and tell if it is common ground?

Hello all

Have a Kenwood KM-208 that I need to see if it is common ground. Talked to Kenwood but they don't know, found block diagram online but can't read it properly.

If I posted the schematics would anyone be able to decipher it for me?

Thanks
Just a dude doing dude-ly things

"Temptation is the manifestation of desire which equals necessity." - Mikey081057
" I have always had a champange taste with a beer budget" - Rick88
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Comments

  • codycatalist
    codycatalist Posts: 2,662
    Thanks!
    Just a dude doing dude-ly things

    "Temptation is the manifestation of desire which equals necessity." - Mikey081057
    " I have always had a champange taste with a beer budget" - Rick88
    "Just because the thread is getting views don't mean much .. I like a good train wreck doesn't mean i want to be in one..." - pitdogg2
    "Those that don't know, don't know that they don't know." - heiney9
    "Audiophiles are the male equivalent of cat ladies." - Audiokarma Member
  • FTGV
    FTGV Posts: 3,649
    Yes it is common ground.
  • codycatalist
    codycatalist Posts: 2,662
    You da real MVP @FTGV
    Just a dude doing dude-ly things

    "Temptation is the manifestation of desire which equals necessity." - Mikey081057
    " I have always had a champange taste with a beer budget" - Rick88
    "Just because the thread is getting views don't mean much .. I like a good train wreck doesn't mean i want to be in one..." - pitdogg2
    "Those that don't know, don't know that they don't know." - heiney9
    "Audiophiles are the male equivalent of cat ladies." - Audiokarma Member
  • xsmi
    xsmi Posts: 1,798
    FGTV, how'd you know? I'm just curious. I love to learn.
    2-channelBelles 22A Pre, Emotiva XPA-2 Gen 2, Marantz SA8005, Pro-Ject RPM-10 Turntable, Pro-Ject Phono Box DS3B, Polk Audio Legend L800's, AudioQuest Cable throughout.
  • FTGV
    FTGV Posts: 3,649
    edited June 2016
    xsmi wrote: »
    FGTV, how'd you know? I'm just curious. I love to learn.
    Looking at the schematic for this amp,if you follow the negative speaker outputs backward.You can see both are connected to ground internally,so are "common" ground.
    Some amplifiers( ie.Adcom 5802) have their negative terminals connected to internal ground but channel grounds are isolated from each other.They are usually connected together and to chassis safety ground through a small amount of resistance.(10-20 ohm resistors).Amps so configured can be made common ground by strapping the negative terminals.
    The negative speaker terminals of a non common ground amplifier will have no internal connection to ground.These bridged /balanced amplifiers cannot have their negative terminals strapped together.
  • xsmi
    xsmi Posts: 1,798
    Awesome. Thank you.
    2-channelBelles 22A Pre, Emotiva XPA-2 Gen 2, Marantz SA8005, Pro-Ject RPM-10 Turntable, Pro-Ject Phono Box DS3B, Polk Audio Legend L800's, AudioQuest Cable throughout.