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  • Voxel-Sub-Passive Build

     123toid updated 1 week ago 2 Members · 6 Posts
  • stevem

    Member
    April 30, 2022 at 5:23 pm

    So I added a pair of Voxel Subs to my Mini Dina build for a desktop speaker set up. I’m pushing them with one of two different amps, the first being a Up2Stream Amp 2.1 (50W x2 output with a 100W sub output) and the second a Lepy LP-168S (45W x 2 + 68W x 1RMS).

    For some reason the sound cuts out if I push the volume up on either amp. It cuts back in when I lower the volume.

    Anyone have a guess as to why this might be happening.

    • This discussion was modified 3 weeks, 3 days ago by  stevem.
  • 123toid

    Administrator
    May 7, 2022 at 5:57 pm

    It usually cuts out when the impedance is too low. THat is weird with either of them, as the subwoofer should not be the issue. However, if you did not run a capacitor on the tweeter, that might be the issue. One way to check it to run just the subwoofer and see what happens.


    Voxel-Sub-Passive Build

    • stevem

      Member
      May 9, 2022 at 1:42 pm

      It is the sub that is cutting out. I’m using a <b style=”font-family: inherit; font-size: inherit;”>TDA7498E Bluetooth Power Amplifier Board with Subwoofer 2.1 Amp for testing. It’s a cheap little amp but has separate volume and crossover controls. When I push the sub crossover it cuts out. P.S. Yes I did run the caps on the tweeter this time. Thanks for the help!

  • 123toid

    Administrator
    May 11, 2022 at 3:52 am

    😁 That’s great to hear that you’re running the caps. As far as the issue goes, you might just be running out of power. What kind of power supply are you running?


    • stevem

      Member
      May 15, 2022 at 9:32 pm

      It was the power. I’m using a variable voltage power supply and didn’t notice that it was set to 12V and not 24V. Thank you!

    • 123toid

      Administrator
      May 18, 2022 at 12:40 am

      Excellent! So glad you got it figured out!


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