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c-70

  1. B

    Yamaha C-70 Phono Preamp Question

    Hello all- Been enjoying my C-70 for years. Lately I’ve been further modifying the analogue output stages on some of my older CD players with Vishay film resistors in place of the OE carbon crap. Got me thinking- has anyone replaced the resistors with higher tolerance metal film types in the...
  2. arcamguy1

    Anybody have recommendations for a good powder coating restorer?

    Hi group, I have a nice Yamaha C-70 preamp, in good condition, that has a cover with some scratches. I've wanted to get the top redone in a nice black powder coat. Have any of you used someone who does a good job with that? I'd be interested in sending them the cover and have it done. Thanks in...
  3. E

    Troubleshooting Yamaha C-70 power supply

    Hi, A newbie from Finland salutes you all with golden ear! I bought years ago a C-70 that had "minor flaws". In practice this means the unit makes a buzzing sound after powering on, not to output but physically audible buzz. The sound fades after few minutes. Before yesterday I have not had...
    • elias_a
    • Thread
    • c-70 yamaha c-70
    • Replies: 22
    • Forum: Yamaha
  4. S

    Looking for AK Tech or advice - Yamaha M-70

    Greetings All, Been doing some reading over the last months and year since I joined. I purchased an M-70 restore kit from eBay in hopes of repairing this device (in protection), but I just do not have the time, so I'm willing to spend some money on it since I spend the rest of my time working...
    • SilentHatch
    • Thread
    • c-70 m-70 m70 restore tech vintage yamaha yammie yammies
    • Replies: 27
    • Forum: Yamaha
  5. david winter

    C-70: mistake around zeners near T211/T212 ?

    Hello, I am repairing a nice C-70 pre. Between T211 ant T212 (symetrical sub-power), are two 27V zener diodes (D126 / D127). The glue used to stick the two 220/35 capacitors corroded both zeners and one had a broken leg. No reference is visible on them, so I took the schematic and realized that...
    • david winter
    • Thread
    • c-70 preamplifier yamaha zener diode
    • Replies: 5
    • Forum: Yamaha
  6. J

    Yamaha M-70, C-70 setup. Powered Subwoofer question

    I want to run my pre amp to a powered Subwoofer and then to the amp. My Yamaha M-70 is rated at 250W RMS if I remember correctly...my speaker (currently) are Yamaha ns-30T (100 Watts). Is a 250W powered subwoofer or a 100 watt Powered subwoofer a better choice with my speakers. thank you
    • JoeMt
    • Thread
    • 100w 250w c-70 powered subwoofer sub woofer yamaha m-70
    • Replies: 14
    • Forum: Speakers
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