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Sound from my vinyl turntable only on one speaker?

polo13_9331 Posted messages 7 Registration date   Status Member Last intervention   -  
polo13_9331 Posted messages 7 Registration date   Status Member Last intervention   -
Hello
I have some amazing equipment at home: a DENON 2X60w hi-fi amplifier, 2 JM LAB 2X100w speakers, a THORENS turntable, an ONKYO CD player, a 2-channel mixer, and an equalizer.
For a while now, when I play a vinyl record, the sound only comes out of one speaker. The turntable is connected to the amplifier at the CD output. When I play a CD, the sound comes from both speakers. I've checked the connections of my equipment and they seem fine. What's going on?

6 answers

  1.
    AluMinioume Posted messages 3107 Registration date   Status Member Last intervention   582
     
    Hi,
    Amplifier model?
    Turntable model?

    If the turntable is connected to the CD input, it must have an internal preamp. If there is a switch on the back of the turntable, switch it to phono output and connect the turntable to a phono input on the amplifier, then set the source to phono. If it works correctly, it might be that the turntable's preamp has a problem.

    Also try another input on the amplifier, keeping the turntable in line output mode.

    It could also be an issue with the turntable itself, such as the cartridge.

    Also check that there isn't a mono setting activated somewhere (turntable, amplifier...).
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    1. AluMinioume Posted messages 3107 Registration date   Status Member Last intervention   582
       
      And more simply, you can also connect the channel that outputs sound to the input of the other channel on the amp, to see if the problem is located after the turntable or on the turntable.
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  2. polo13_9331 Posted messages 7 Registration date   Status Member Last intervention  
     
    The amplifier reference is DENON PMA 300
    the turntable reference is TD 190
    I just completed the setup you gave me, which means connecting the turntable to the mixer at the phono input and to the amplifier at the phono output, but nothing happens; only one speaker is working.
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    1. AluMinioume Posted messages 3107 Registration date   Status Member Last intervention   582
       
      You didn't specify that your turntable went through the mixer before going to the amp. And what is its reference at the mixer?

      Also, try what I already mentioned in my previous message:
      "you can also connect the channel that produces sound to the input of the other channel on the amp, to see if the problem is after the turntable or on the turntable."
      In other words, swap the RCA connections and see if the sound still comes from the same speaker.

      Currently, does the turntable already output a pre-amplified signal or is it done by a device behind?
      Try bypassing the mixer by connecting the turntable directly to the amp.
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  3. polo13_9331 Posted messages 7 Registration date   Status Member Last intervention  
     
    The reference of the mixing table is CITRONIC CDM 7:32
    yes it works, I connected the turntable directly to the amp
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    1. AluMinioume Posted messages 3107 Registration date   Status Member Last intervention   582
       
      Okay, but you haven't answered the question of whether the audio signal is already pre-amplified when it comes out of the turntable (and I can't find this information in the documentation for this turntable).

      If it works by connecting the turntable to the CD input of the amp, it means the signal is already pre-amplified. If you have to connect the turntable to the phono input, it means the amp is the one that pre-amplifies.

      Yes, it works, I connected the turntable directly to the amp
      Which input? And does it work correctly on both speakers?

      In that case, it's the mixing console that's at fault. It could be a malfunction or a bad setting. Malfunctions are not uncommon with this type of mixing console.
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  4. polo13_9331 Posted messages 7 Registration date   Status Member Last intervention  
     
    on the phono input of the amplifier, it sounds correct to me, but in this configuration, I can't use the equalizer.
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  6. polo13_9331 Posted messages 7 Registration date   Status Member Last intervention  
     
    I don't know if there is a preamplifier on the turntable
    I didn't understand your question about which channel that gives the sound I should connect to the input of the other channel of which device?
    What raised my suspicions is that I also have a home theater; when I connect to listen to the radio and when I'm done, I turn it off and then turn on the turntable to listen to a good vinyl, I only have one speaker working. I have to turn the home theater back on and then immediately off, then I get sound from both speakers – I think there must be an interference.
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    1. AluMinioume Posted messages 3107 Registration date   Status Member Last intervention   582
       
      From a distance, it quickly becomes complicated to have a clear view of your setup given the number of devices. And several possible origins for the problem...
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  7. polo13_9331 Posted messages 7 Registration date   Status Member Last intervention  
     
    I think I found the problem. I unplugged the home theater system and reconnected everything to the original setup. The two speakers are working well, but the sound is inaudible and there's a lot of static, like when dust was interfering with the sound from the playback head.
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