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BSR A14 Stereo Cabinet

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  • BSR A14 Stereo Cabinet

    Hi, i'm refurbishing a 60-70's stereo and turntable stereo cabinet and i'm having problem getting a good sound, it's good at high volume, but it's really cra**y at low volume, and I don't know why, should I change the speakers?

  • #2
    check your output transformer or if its directly coupled your last output transistor.

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    • #3
      There's nothing on it except T-*1 or I* (Unclear)-67. I've redone all the wiring from the plug to the Transformer but it didn't work. Any idea?

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      • #4
        Should I post a picture? maybe it would help.

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        • #5
          Oh Yeah!!!!, I just changed the transformer for a new, and a little more powerful one, and it sounds like new, really great! Thanks Hayzee!

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          • #6
            AAAAAHHH dammit, it worked for 5 minutes then dropped back to the same sound as before, but It did it on a song with a lot of bass, and it was okay on low-bass songs, but after it dropped back, it wasn't. What could it be? (yeah, i'm not very good in electronics)

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            • #7
              the amplifier uses a push-pull stage for amplification. the output of one transistor is the input to the next stage etc. you'll need an audio generator and an oscilloscope to troubleshoot any amplifier.

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              • #8
                I'll check that, for the record, the receiver is a ''Morse Solid State Stereophonic High-Fidelity''

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                • #9
                  i think it would be pudent also to check the quiescent current setting if it has one too, as if this is incorrectly set it will cause cross-over distortion at low volumes.

                  peter

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