I am wanting to build a stereo amp to power a set of speakers for my first project. I want it to be as inexpensive and as easy as possible. How well it sounds is secondary. I am looking for something under $60. Maybe under $100 if it looks nice or sounds nice as well.
I have done at least 5 hours of relevant reading, but I think it is finally time to talk to other real people. I just can't seem to figure out what I need. I am a noobie.
What I want (or what I think I want): Stereo amp to have dual RCA input or 1/4" stereo input that outputs to two 8 ohm speakers.
I would like to plug a dynamic microphone ( mic is 1/4" output) into it and use it as a PA. I would also like to play music in it from an mp3 player (I'd just use an 1/8" converter). My speakers are both 8 ohms and are rated at 100w each(??). Will a 75w or 50w amp power them or does the 100w rating mean I have to have that much power for some matching purpose? I'm assuming 100w is the maximum input or max rms input, but I really don't know.
So again, I want something inexpensive and easy to build. I found this kit called Non-Inverting LM3886 Stereo Kit - $70- http://chipamp.com/lm3886.shtml. Would this be a good one to try? I also looked through the projects on this site involving the lm3886 and lm3875. They seemed to be the cheapest option.
I shouldn't have too many issues putting the electronics together: I can solder stuff to the PCB. Is there generally troubleshooting involved once the circuit is constructed or should they work the majority of the time?
Finally, I need a little help on the case/chassis. What kind of tools do I need to drill into metal? It seems like this part is going to be the hardest. Can I get a pre-drilled case somewhere and then use screws to connect things up?
I have put a priority on learning safety. I'll only work at a ground fault station, I won't build with power connected. I will use one hand if there is a risk of touching a capacitor. I will wear shoes while working. Anything else I should watch for?
Thanks so much!
I have done at least 5 hours of relevant reading, but I think it is finally time to talk to other real people. I just can't seem to figure out what I need. I am a noobie.
What I want (or what I think I want): Stereo amp to have dual RCA input or 1/4" stereo input that outputs to two 8 ohm speakers.
I would like to plug a dynamic microphone ( mic is 1/4" output) into it and use it as a PA. I would also like to play music in it from an mp3 player (I'd just use an 1/8" converter). My speakers are both 8 ohms and are rated at 100w each(??). Will a 75w or 50w amp power them or does the 100w rating mean I have to have that much power for some matching purpose? I'm assuming 100w is the maximum input or max rms input, but I really don't know.
So again, I want something inexpensive and easy to build. I found this kit called Non-Inverting LM3886 Stereo Kit - $70- http://chipamp.com/lm3886.shtml. Would this be a good one to try? I also looked through the projects on this site involving the lm3886 and lm3875. They seemed to be the cheapest option.
I shouldn't have too many issues putting the electronics together: I can solder stuff to the PCB. Is there generally troubleshooting involved once the circuit is constructed or should they work the majority of the time?
Finally, I need a little help on the case/chassis. What kind of tools do I need to drill into metal? It seems like this part is going to be the hardest. Can I get a pre-drilled case somewhere and then use screws to connect things up?
I have put a priority on learning safety. I'll only work at a ground fault station, I won't build with power connected. I will use one hand if there is a risk of touching a capacitor. I will wear shoes while working. Anything else I should watch for?
Thanks so much!