Thanks to all for the advice already present, they've helped me delve into the world of sound a little bit. My apologies if this is long
I have a a little Lepai 2020A+ amp, which has two inputs in the back, a 3.5 and RCA, which are both on at the same time.
I'd like to hook up audio out from the tv (RCA), line out from a computer (3.5), and line out from a homelink bluetooth music adapter to the Lepai, using a splitter to hook up two inputs into the 3.5 jack.
I'm able to hook up the computer line out and the TV line out through a splitter into the 3.5 jack, and they play back normally, with the level of one dropping a very tiny bit when the other source is hooked up, not really noticeably.
However, when I try to hook up the bluetooth music reciever to the RCA inputs on the Lepai, so that all three are hooked up at the same time, the level of the TV and Computer inputs is reduced to barely be audible with the volume fully turned up, even when the bluetooth reciever is not playing anything.
When I use the bluetooth reciever to stream music through the amp, however, it plays back at a more normal volume.
Using RCA to 3.5 cables, I've varied what is connected to what, like having the Bluetooth and TV connected to one input port, the Computer to the other, and other such combinations, but it really seems as though connecting the Bluetooth reciever is causing the level of the other inputs to be reduced.
Why might this be happening? I'm just starting to learn about the electronics, but would it be the case that the Bluetooth reciever line out is sucking voltage from the other sources? If so, what is causing it, and how can I fix it? Would increasing the level of the bluetooth reciever using a pre-amp help at all?