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Midwest Audio Fest

It’s that time audio enthusiasts! Registration for the 2019 Speaker Design Competition is now open! Visit midwestaudiofest.com for details and to list your speaker project. We are excited to see all returning participants, and look forward to meeting some new designers this year, as well! Be sure your plans include a visit to the Parts Express Tent Sale for the lowest prices of the year, and the Audio Swap Meet where you can buy and trade with other audio fans. We hope to see you this summer! Vivian and Jill
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Good job PE!

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  • Good job PE!

    Happy to see PE selling this cool little amp!
    https://www.parts-express.com/lepai-...pply--310-4003
    https://youtu.be/P3A4mEGUHY4

  • #2
    It would have been better to include a 24 V 4 amp PS. That would provide extra headroom for peaks. The 15 V PS will only deliver ~13 W rms into 8 ohm L-R speakers and 26 W rms into a 4 ohm sub. A 19 V laptop supply will up that to 20 W rms L-R and 40 W for the sub. A 24 V PS would deliver 33 W rms L-R and 65 W rms for the sub. Technically, this exceeds the TPA3118 chips thermal rating by a few watts. But with music (or video audio) you never get those sustained watts. Only a pure sine wave would reach those levels.

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    • #3
      Originally posted by Millstonemike View Post
      It would have been better to include a 24 V 4 amp PS. That would provide extra headroom for peaks. The 15 V PS will only deliver ~13 W rms into 8 ohm L-R speakers and 26 W rms into a 4 ohm sub. A 19 V laptop supply will up that to 20 W rms L-R and 40 W for the sub. A 24 V PS would deliver 33 W rms L-R and 65 W rms for the sub. Technically, this exceeds the TPA3118 chips thermal rating by a few watts. But with music (or video audio) you never get those sustained watts. Only a pure sine wave would reach those levels.
      Good to know Mike. In that case, they also sell the amp without the power supply https://www.parts-express.com/lepai-...3118--310-4002 just provide your own 🙂

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      • #4
        That is a nice looking unit!

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