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Introduction

Not a true teardown, but more of a look inside and a breakdown of how this rather confusing speaker works

This teardown is not a repair guide. To repair your Harman Kardon Speaker, use our service manual.

  1. Harman Kardon Onxy Studio 5 Teardown, Face: step 1, image 1 of 1
    • Its quite difficult to get the front cover off, but one it is it will expose the tweeter, woofer and one of the 2 passive radiators

  2. Harman Kardon Onxy Studio 5 Teardown, Inside: step 2, image 1 of 2 Harman Kardon Onxy Studio 5 Teardown, Inside: step 2, image 2 of 2
    • The back cover isnt a cover like the front is, it IS the back. Removing all the face screws will allow it to rather easily pop off and expose the inside

    • Inside here we will find an onyx tweeter, aura sub and both of the weighted omni passive radiators

    • Theres also a SINGLE 18650 battery and the main board

    • Tweeter is 4 Ohm, Woofer is 2 Ohm. Remember this as it will be used on the next page

  3. Harman Kardon Onxy Studio 5 Teardown, Board Level: step 3, image 1 of 3 Harman Kardon Onxy Studio 5 Teardown, Board Level: step 3, image 2 of 3 Harman Kardon Onxy Studio 5 Teardown, Board Level: step 3, image 3 of 3
    • Not too much to see here, Bluetooth module and its antenna, AK7755EN DAC and various power supplies and the output filters for the amplifier. a DC-DC boost converter supplies higher voltage for the amplifiers

    • Under the heatsink lies 2 TPA3116D2's that i believe are running in PBTL

    • Heres where its gets complicated and long-winded. The speaker has 2 operating modes. Battery and AC power, Which is a 19V 2A brick. When running on battery supply voltage bounces between 7V-10V when measured at pin 32 of the TPA's. When plugged supply voltage sits at a much more stable 12V

    • The DAC also implements an aggressive compressor when on battery power. Power AT THE WOOFER on battery was 5.9V which comes to 17.5W into 2 Ohms. When plugged in voltage jumped to 9V, which at 2 ohms is 40.5W! I Didn't power test the tweeter but im going to guess battery is around 3W-5W and plugged in is around 10W

bassblaster505

Member since: 01/25/2017

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