Balance "add on" for my Desk top Stereo Amplifier Case - DROK TDA7297

thingiverse

Bought the DROK TDA7297 stereo amplifier for my old Mod B pi. Amazing value for money and sound quality, given that you have a suitable 12V power supply and old speakers. They are widely available on both Amazon and eBay here's one link: http://www.ebay.com/sch/sis.html?_nkw=DROK+TDA7297+Mini+Digital+Amplifier+Stereo+Audio+Ampli+Electro+12+Volt+Amp+New&_trksid=p2047675.m4100 But they have two problems: No case, and no balance control. Well-created cases are available elsewhere, but I need the cash for it. The balance control is a bigger problem because the amplifier is a bridge type which means that altering the output is more complicated than expected on this budget. To fix this issue, made an add-on to provide balance control for my DROK TDA7297 case. It's a bit more technical than just building a case, so decided to post it here. The files create an add-on case that takes the input and balances that in what I hope is a stylish manner. The electrical explanation can be found here: http://sound.westhost.com/pots.htm I used a 100k Pot and 33k resistors as examples, along with standard stereo male and female jacks available from local stores. You will also need two 3mm x 10mm screws. I hope to create an additional module that allows you to add more inputs, similar to a mixer where you can add modules for each input you want, but I first need to research if isolation is required. Please note that this project involves delicate wiring, so be sure to pre-solder the wires onto the male jack before screwing it in, as there's no space to solder once screwed in. If you want to add feet to the project, you will need 13mm inserts that require a small flat screwdriver and a 3mm drill bit for the holes on the bottom. Here are my print settings: Printer Brand: RepRap Printer: Huxley Fold Rafts: Doesn't matter Supports: No Infill: 30% Notes: I printed it with two walls at 0.3mm layer height and 30% infill (my nozzle is set to 0.46mm, but that's not a problem for me). All the parts are correctly rotated for printing.