Hello all, First off, just wanted to say what a great forum this is. I just found it a few hours ago while searching the web looking for help solving the problem I'm posting about. I've spent the last little while here going through all of the older posts that are at all related to my problem. I found a few close ones, but nothing that helps me directly. With that said, on to my problem.
For the sake of example, let's say I have two ipods I want to be mixed together and sent out one pair of speakers. I want to preserve as much of the music quality as possible, but also to be as simple as possible. I know my way around a soldering iron but I'm still pretty new to circuits. I do a lot more 'repair' than 'creating'.
There are a ton of schematics online (and some in the forum here) that deal with audio mixers, but most of them are geared towards muscians and deal with mics and mono outputs. That doesn't help me.. but I was thinking that a mono signal is (for my practical purposes) just half of the stereo signal. So if a 4 channel mono mixer worked, why wouldn't that same circuit work as a 2 channel stereo mixer?
Well.. it doesn't. I built one last night and one input always sounds great, while the other one sounds terrible. I could change ipod1 to input1, ipod2 to input2, and no matter what combination, input1 would always sound great and input2 would always sound crappy.
I actually built the circuit twice, with the same result on both.. so I'm hoping you guys can help me out. Is my circuit design wrong? I wouldn't be surprised as I'm just sort of hacking at it. Can you give me a good fundamentals lesson on why its wrong? I'm eager to learn.
I've attached a rough drawing of my circuit design for reference.
For the sake of example, let's say I have two ipods I want to be mixed together and sent out one pair of speakers. I want to preserve as much of the music quality as possible, but also to be as simple as possible. I know my way around a soldering iron but I'm still pretty new to circuits. I do a lot more 'repair' than 'creating'.
There are a ton of schematics online (and some in the forum here) that deal with audio mixers, but most of them are geared towards muscians and deal with mics and mono outputs. That doesn't help me.. but I was thinking that a mono signal is (for my practical purposes) just half of the stereo signal. So if a 4 channel mono mixer worked, why wouldn't that same circuit work as a 2 channel stereo mixer?
Well.. it doesn't. I built one last night and one input always sounds great, while the other one sounds terrible. I could change ipod1 to input1, ipod2 to input2, and no matter what combination, input1 would always sound great and input2 would always sound crappy.
I actually built the circuit twice, with the same result on both.. so I'm hoping you guys can help me out. Is my circuit design wrong? I wouldn't be surprised as I'm just sort of hacking at it. Can you give me a good fundamentals lesson on why its wrong? I'm eager to learn.
I've attached a rough drawing of my circuit design for reference.
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