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  • Re: Arduino Powered Penta Display

    Sounds like a ground issue. A stock 7805 should happily supply 1.5A which should be more than enough for the ESP32 and the OLED. Can you do a quick drawing of your wiring?. Cheers, /Steffen
    Posted to The Workbench (Forum) by Flerbizky on Sun, May 5 2019
  • Re: Arduino Powered Penta Display

    Having the AVR feed a signal to the Pentas to keep the auto on/off circuit triggered sounds like an even worse solution than mine - sorry. Besides - if the signal you want to keep them powered on with is low enough to be inaudible, it's too low to keep them powered on. There has to be someone clever in here that can look at the auto on/off circuit and tell you within 7 seconds where to inject the 12v trigger from the AVR to activate it. Maybe create a post with that specific subject? And I reckon
    Posted to The Workbench (Forum) by Flerbizky on Thu, Apr 25 2019
  • Re: Beomaster 6000 clock delay

    There is indeed a 50/60hz pin on the 8032 :)
    Posted to The Workbench (Forum) by Flerbizky on Thu, Apr 18 2019
  • Re: Arduino Powered Penta Display

    Mk.II is the same mate: And instead of leaving the old display in there, why not get a 7805 and a couple of caps (copy the supply straight from the Pentas perhaps?) and get 5v to feed the Arduino off. I think you'll seriously run out of room if you leave the original display in there. Another thing you might want to consider now that you have it opened anyway: If you're going to use them in a surround setup with a signal above Dolby Pro-Logic*, the way the power amp switches on is going to
    Posted to The Workbench (Forum) by Flerbizky on Thu, Apr 18 2019
  • Re: Arduino Powered Penta Display

    Mk.II is the same (well, power wise at least) Why not just get a 7805 and a couple of caps and make your own 5v supply for the Arduino?. Much more elegant that leaving the original board in there. Besides - I think you'll run out of room mighty fast if you leave the original in there. Another thing you might want to consider (since you have them opened up anyway): If you plan on using them as front speakers in a surround setup more advanced than Dolby Pro-Logic*, you want to take a look at how
    Posted to The Workbench (Forum) by Flerbizky on Thu, Apr 18 2019
  • Re: Arduino Powered Penta Display

    Only just checked the Mk.I manual - legs 2 and 3 in the DIN plug that goes to the display should carry 10v AC straight from the transformer which is rectified on the display board itself - something that should be easy-peasy to copy.
    Posted to The Workbench (Forum) by Flerbizky on Tue, Apr 16 2019
  • M75 Tweeter replacement (Audax HD12X9D25)

    Because I needed another project, and they were cheap (and came with stands - original height adjustable), I picked up a set of M75s. Being extremely happy with the way the S75s sound and reading all sorts of positives on the Ms, how could I not. Besides the rotted foam on the mid and bass drivers, one side is missing a tweeter. I begged and pleaded, but seller claimed it had been lost somewhere along the way. And I actually never asked why it was removed in the first place - the rest of the speaker
    Posted to The Workbench (Forum) by Flerbizky on Sun, Apr 14 2019
  • Re: Beovox S75 Tweeters

    In case you're interested, my solution is posted in my S75 thread: https://forum.beoworld.org/forums/p/36375/271649.aspx#271649
    Posted to The Workbench (Forum) by Flerbizky on Thu, Feb 28 2019
  • Re: Beovox S75 Tweeters

    Double post. *slow claps*
    Posted to The Workbench (Forum) by Flerbizky on Thu, Feb 28 2019
  • Re: Beovox S75 - Bringing a set up to date.

    What a happy happy set of speakers this is! Admitted - they are not nearly as precise as the S45.2, neither analytical like the S120s, but by God do they invite you to the party!. Have been listening to 1.FM Back to the 80s lately, and that is neigh on perfect with the S75s. Throw some Donna Summer / I Feel Love (12" version preferably) or find some Def Leppard (anything produced by Mutt) and they absolutely shine. Electrically, they are now as good as they get. Cleaned up the tweeters, removed
    Posted to The Workbench (Forum) by Flerbizky on Wed, Feb 27 2019
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