Page 4 of 4 FirstFirst ... 234
Results 31 to 35 of 35

Thread: Motor Control - Reed Relay

  1. #31
    ppp Pianississmo tone's Avatar
    Join Date
    Jan 2018
    Posts
    7

    Quote Originally Posted by muckelroy View Post
    Most solid state amplifiers will be fine if nothing is attached to their outputs. They only begin to over-conduct and overheat if the outputs are shorted (so a close-to-zero load). Grain of salt is, I am not intimately familiar with the 130 amp, and I don't know if there are quirks with it that are exceptions to that rule.

    I would think you could disconnect the 130 amp board through its 5 pin molex connector. It also gets signal input, but I assume you're sending that to the woofer already.
    Oh i see. I will take a look to see if i can pull out a molex 5 pin to kill the power to audio amp. I guess i was also wondering if disconnecting the power to the audio section will cause problems elsewhere, like throwing off what the power supply is supposed to see
    Last edited by tone; 01-26-2018 at 06:26 PM. Reason: spelling

  2. #32
    ff Fortissimo muckelroy's Avatar
    Join Date
    Jun 2011
    Location
    Austin, TX
    Posts
    1,237

    If all the power supply needs to do is motor control, I don't think it will matter.

    If you disconnect the amp card, the rectified portion of the power supply (40, 35, and -40V rails) will not have a load and may run a little higher, but as long as those rails do not exceed 50V, it should be safe. That being said, if the 3000uf/50V filter capacitors are leaking voltage or have a high ESR, they should be replaced regardless of what you're doing with the amp board. It may even help with the hum on the amp. Can't say for sure.

  3. #33
    ppp Pianississmo tone's Avatar
    Join Date
    Jan 2018
    Posts
    7

    Quote Originally Posted by muckelroy View Post
    If all the power supply needs to do is motor control, I don't think it will matter.

    If you disconnect the amp card, the rectified portion of the power supply (40, 35, and -40V rails) will not have a load and may run a little higher, but as long as those rails do not exceed 50V, it should be safe. That being said, if the 3000uf/50V filter capacitors are leaking voltage or have a high ESR, they should be replaced regardless of what you're doing with the amp board. It may even help with the hum on the amp. Can't say for sure.
    Ok thanks. I should replace the caps regardless. However, it all works, and those caps seem pricey.
    The hum is not audio related. It is the motor itself. I'm wondering if there is a way to get it quieter..

  4. #34
    ff Fortissimo muckelroy's Avatar
    Join Date
    Jun 2011
    Location
    Austin, TX
    Posts
    1,237

    Right sorry. If it's the Leslie motor humming, new motor mounting grommets may help. Check out the service manual. www.tonewheelgeneralhospital.com has a number of grommets available. They might be able to help you pick which you need.

  5. #35
    ppp Pianississmo tone's Avatar
    Join Date
    Jan 2018
    Posts
    7

    Quote Originally Posted by muckelroy View Post
    Right sorry. If it's the Leslie motor humming, new motor mounting grommets may help. Check out the service manual. www.tonewheelgeneralhospital.com has a number of grommets available. They might be able to help you pick which you need.
    thank you again. i have the motor out of the unit and it's resting on the edges of a few boxes as temporary mounts to keep it suspended vertically. Indeed, when the motor is running it is causing the boxes to sort of hum, and when i lift the motor off it dramatically quiets down. So, i suppose i just need better/fresher mounts!

Page 4 of 4 FirstFirst ... 234

Similar Threads

  1. Replies: 4
    Last Post: 04-29-2017, 04:30 PM
  2. Solid State relay in this custom footswitch speed control box
    By Chewy in forum Leslies, Tone Cabinets, Speakers, & Accessories
    Replies: 0
    Last Post: 07-15-2015, 04:26 PM
  3. Plans for console and foot switch speed control for EIS 147 solid state relay
    By muckelroy in forum Leslies, Tone Cabinets, Speakers, & Accessories
    Replies: 0
    Last Post: 04-21-2015, 06:39 PM
  4. leslie speed control relay
    By jacksonC3 in forum Leslies, Tone Cabinets, Speakers, & Accessories
    Replies: 9
    Last Post: 01-23-2015, 04:50 AM
  5. Foot Pedal Leslie Control relay
    By tonewheel1966 in forum Hammond Organs
    Replies: 23
    Last Post: 09-19-2012, 02:53 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •