Game Boy Advance Flex Amp – Robot_Retro

This flex amp for the Game Boy Advance enhances the audio and also addresses issues with other flex amps that are too loud and don’t have adjustability. 

• Variable volume pot labelled “TRIM”. This will adjust the peak volume of the amp. Set this during install with a small flat head screwdriver.
• Preinstalled additional capacitators to reduce speaker hum.
• If using an original speaker, there will be slight distortion at the maximum volume and the tabs on the back of the speaker may need to be trimmed.
• You can use a 1W speaker or a 2W speaker. A 1W is sufficient as most GBA speakers will not exceed 1W, but a 2W will allow for that extra amount that can occur. Please purchase your speaker separately. Properly insulate back metal area of 2W speaker with Kapton tape.

• 1x GBA Audio Flex amp

INSTALLATION:

• Remove the old speaker and trim off the old solder connections so they are flat with a pair of side cutters.
• Pre-tin the GBA motherboard (see photo showing locations).
• Add a layer of Kapton tape or generic tape to the back of the speaker. This step is required to prevent shorting. 
• Solder on the flex amp at the four locations (see photo). I suggest to use a small amount of liquid flux to help neaten to joints and allow the solder to flow.
• Solder on the speaker.
• Using a small 2mm flat blade screwdriver (iFix part “2”), set the volume pot to the required peak level.

NOTES:

• This amp has a ‘silence’ mod installed. Which means that, when the volume wheel is closer to the off position, the volume will become completely silent. This helps to reduce the humming/hissing noises that can be heard when an amp is installed. However, please expect a less gradual increase of volume from off to receiving sound, it will start off at a higher-level volume than a quiet one.
• Created by Robot_Retro