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--- projects:diy_active_speaker [2025/11/24 13:32] – admin
+++ projects:diy_active_speaker [2025/11/24 16:13] (current) – [mute voice prompts] admin
@@ Line 6: / Line 6: @@
 FYI: If you have an old amp with 30-pin iPod Dock, see [[projects:ipod-simu]] \\
-===== Requirements =====
+===== Hardware modules =====
    * passive speaker
@@ Line 12: / Line 12: @@
    * power supply unit
    * optional: DC-DC decoupler / filter (to eliminate noise of PSU) / LC-filter
-   * receiver/player (here: BT201 KT1025A)
+   * receiver/player (here Bluetooth via BT201 KT1025A or CSR/QCC chipset)
-   * optional: MCU
+   * optional: MCU (used for BT201)
@@ Line 46: / Line 46: @@
-===== the verdict: QCC / CSR BT only modules =====
+===== QCC / CSR BT only modules =====
-Many audio Bluetooth player modules use Qualcomm chipsets (formerly CSR). \\
+Many audio Bluetooth player modules use CSR/Qualcomm chipsets. CSR has been acquired by Qualcomm in 2015. \\
 CSR chips → require CSR USB-SPI programmers, uses BlueSuite toolchain. \\
 QCC chips → prefer USB DFU, only use QCC USB-SPI when needed \\
@@ Line 79: / Line 79: @@
 ⚠ QCC does not use CSR BlueSuite anymore. All Qualcomm voice-prompt handling uses QCC/ADK tools. Access via USB DFU or QCC USB-SPI.\\
+There is a [[https://www.youtube.com/watch?v=lVrJdW9ekro|tutorial on YT for QCC3008]] ADK Configuration Tool. \\
 Option A for QCC) Disable prompts in ConfigStore (recommended)
@@ Line 113: / Line 115: @@
 Option D) Flash minimal firmware without voice prompt partition
    * Requires: Full CSR ADK / Qualcomm ADK; probably requires vendor keys
 ===== power supply =====