Marantz Model 9 EL34 Red Plating Tube Amplifiers Repair & Restoration

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  • Опубликовано: 1 апр 2024
  • Repair and complete electrical restoration of a pair of Marantz Model 9 tube amplifiers that where redplating.
  • Авто/МотоАвто/Мото

Комментарии • 28

  • @kentonkirkpatrick5225
    @kentonkirkpatrick5225 4 месяца назад +1

    My hat's off to anyone possessing the patience and skill to revive electronics of this caliber. Bravo!

    • @Tinybench
      @Tinybench  4 месяца назад +1

      Hello teammate! I want you to know that you made my day with your comment! Thank you thank you thank you so much!!!😊

  • @mcgjohn22
    @mcgjohn22 8 дней назад +1

    nice work. The model 9s are really nice sounding amps. cleaning off all the old solder and leads on the terminal post boards takes tons of time. Most techs do not want to spend the time to do this since they will not get paid by the customer to do it correctly. VAC-AMPs made re-issues of the Marantz 9s a number of years ago including getting the power and output transformers made by the same company that made the originals. They sound very close to the originals. Also great work keeping the carbon comp resistors in the signal path. They are part of this amps sonic signature.

    • @Tinybench
      @Tinybench  7 дней назад

      @@mcgjohn22
      Thank you teammate thank you thank you so much!
      I really appreciate it!
      Hey, I would really appreciate it if you made me a huge favor and subscribe! It really would help!!!
      🙂🙏💥💥💥

  • @SurnaturalM
    @SurnaturalM 3 месяца назад +1

    These are spectacular amplifier. Nice find!

    • @Tinybench
      @Tinybench  3 месяца назад

      Thank you very much teammate!
      It is spectacular indeed!
      🙂🙏

  • @erickvond6825
    @erickvond6825 4 месяца назад +1

    I wound up saving a couple McIntosh MC1502 amps from the curbside on their way to the dump. They were all hacked together like they'd been worked on by a complete novice much like the Marantz amps you worked on in this video. Almost every single tube was blown because the heater voltage was way too high. Someone had replaced the rectifier tube with a bridge rectifier without accounting for the extra power. It was expensive to replace them but worth it. After replacing most of the components they turned out to be some of the cleanest sounding amps I've ever heard.

    • @Tinybench
      @Tinybench  4 месяца назад

      Wait a minute teammate I am dumbfounded. Are you sure you got the right model number the MC 1502 is the new 150 W x 2 tube amplifier for Mcintosh which cost $11,000.
      Regardless of the model number, I don’t understand how someone can throw away a Macintosh Amplifier.
      I found a fisher, 500 C on a dumpster myself. I’ll dumpster dive any day for an amplifier lol.
      On a different note, when I see horrible work like that, I think that is not a matter of knowledge, but a matter of having the desire to do a good job. I consider myself a novice in the process of learning something new every day and the reason why I started working on my own equipment was because the professionals in my city, which is Miami are absolutely horrible butchers!
      Thank you very much for watching my videos, and for sharing your experience. I really appreciate it!
      🙂🙏

  • @frankgeeraerts6243
    @frankgeeraerts6243 4 месяца назад +1

    Finaly someone who respects the sound of the amplifier ...........Carbon resistors , I use them also when restoring those amplifiers , they are NOT inductive ! ....and besides critics they sound GOOD !
    Many times I serviced vintage amplifiers restored by technicians ........when the owner complained the sound was gone !
    Nice job !!!
    Kind regards

    • @Lyndalewinder
      @Lyndalewinder 4 месяца назад +2

      I thought carbon composition resistors were noisy ?

    • @Tinybench
      @Tinybench  4 месяца назад +1

      Thank you, thank you thank you so much! I really appreciate your comment. You made my day teammate.🙂🙏

    • @Tinybench
      @Tinybench  4 месяца назад +1

      @@Lyndalewinder they can be noisy but they seem to sound good.
      I only use them in the signal path.
      🙂🙏

  • @moodyga40
    @moodyga40 2 месяца назад

    sharp wire cutters work well taking off leads

  • @robertwear1675
    @robertwear1675 4 месяца назад +1

    It's always great to see a new video from you. By the way there's a company called Hayseed Hamfest that makes custom multi capacitor cans. They advertise here on RUclips. Robt.

    • @Tinybench
      @Tinybench  4 месяца назад +1

      Hello teammate!
      Thank you, thank you, thank you so much. I’d like to handpick my own Capacitors and tuck them under the chassis. Replacing the multi can is much easier but when I choose my own capacitors , I can select the desire parameters.
      Once again, thank you, thank you thank you so much !!!
      🙂🙏💥💥💥

    • @robertwear1675
      @robertwear1675 4 месяца назад

      @@Tinybench I'm sure you know best. Great work!

  • @crooner2007
    @crooner2007 18 дней назад +2

    These are gems that deserve the very best. Yellow Chinese made Illinois Cap films wouldn't have been my choice for coupling caps. NOS mil spec PIO's or current production Arizona Cactus caps would have been perfect. They are not cheap, but then again neither is a pair of Marantz 9's...

    • @Tinybench
      @Tinybench  17 дней назад +1

      @@crooner2007
      I agree with you 100% teammate!
      I put those in temporary until the owner decide which coupling caps he wants to use, and I will then replace them for him.
      Please watch some of my other videos, restoring my own equipment where I use the military paper and Capacitors that you were referring to.
      Thank you so much for watching and commenting and I would really appreciate it if you please subscribe .
      Once again, thank you thank you thank you so much !
      🙂🙏💥💥💥

  • @drdyna
    @drdyna 4 месяца назад +1

    You do awesome work :)

    • @Tinybench
      @Tinybench  4 месяца назад

      Thank you, thank you thank you so much! I really appreciate it!
      🙂🙏💥💥💥

  • @moodyga40
    @moodyga40 2 месяца назад +1

    good amp I've fix a few

    • @Tinybench
      @Tinybench  2 месяца назад

      They definitely are good amps, teammate!
      When my friend heard him, he purchased a pair !!!!😂
      I had never even seen them before I had them in my tiny bench!
      I thought that you subscribed thank you thank you thank you so much !!!!
      I subscribed to your channel as well !
      🙂🙏💥💥💥

  • @ericlane5949
    @ericlane5949 3 месяца назад

    Hello! I’m enjoying your channel. Happy to have found it! Is the arcing suppressor cap (near the end of video) also a 0.01uF like in your Eico vid?

    • @Tinybench
      @Tinybench  3 месяца назад +1

      Hello team mate! Thank you so much! If you haven’t, please subscribe. I would really appreciate it. Yes, that was also the same value if I remember correctly. I use between 01 uf and .03 uf on larger amplifiers. I use failproof capacitors from WIMA that are guaranteed to never short.
      Once again, thank you very much.

  • @thoraldshib4393
    @thoraldshib4393 4 месяца назад +1

    If i messed up one post I would have stopped and adjusted my heatgun, the previous person truly butchered these, made me sick

    • @Tinybench
      @Tinybench  4 месяца назад

      Hello teammate! Thank you very much for watching my!
      At least we gave the units some well-deserved TLC!!!

  • @moodyga40
    @moodyga40 2 месяца назад +1

    fuse holders are wrong orange drop don't sound good in these amps

    • @Tinybench
      @Tinybench  2 месяца назад

      I agree with you 100%
      Before I did the restoration, I listened to the unit with the orange drop capacitors, and it sounded like the lo pass filter was engaged!
      Absolutely terrible with no clarity !
      🙂🙏