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clean-up

OiD-W 2022-10-12 23:13:51 +02:00
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H2-Plus-speaker-modification.md → H2-Plus-speaker-modifications.md

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## Amplifier volume gain
The H2+ Version R2, R3 and R4 uses an WM8731 Codec and supports a speaker using a dedicated Audio Amplifier INS8002e. This is a 3-watt amplifier and should give a high volume.
The issue is that when the volume is at 50 (Default) it gives a good safe volume level in the headphones, but the speaker audio is unable to be heard unless you turn up the volume to 80+ on the volume setting and even then, the audio is low.
@ -13,6 +15,8 @@ The replacement of the resistor is not easy, and then you need the skills and to
![Spearker Mod Resistor](https://user-images.githubusercontent.com/32274981/164781350-6f921fdd-5bfa-479f-8f2f-b3f520ee4c6e.jpg)
## Silencing internal speaker when using audio jack
In the H2+ R4 version the headphone jack switch is disabled. When a pair of headphones are plugged in the internal speaker is not disconnected.
A simple but delicate modification can enable the headphone switch functionality by placing some Kapton tape over the PCB PAD and soldering a small wire from the headphone jack connector to the capacitor into the speaker amplifier.