Kingston
Well-known member
Hello.
I was trying to convert L+R stereo audio into M+S stereo using transformers, but screwed up bad with wiring last weekend. I think I see the error in my ways, but I need help verifying this.
What I have here is a pretty generic line-level application. A standard 1+1:2+2 transformer input, or alternatively 2+2:1+1 output. What's between input and output does not interest us in the conversion. It could be some 1:4 stepped up thing, or maybe 1:2+2 class AB amp. In the example below, it's wired 1:4.
I can see it clear as as day when written down or programmed in C.
Left + Right = Mid
Left - Right = Side
But I'm confused with this simple math on the transformer windings.
Is the following correct?
1. Left signal goes to both transformers top windings in phase.
2. Right signal goes to transformer 1 bottom winding in phase, creating a mid sum.
3. Right signal goes to transformer 2 bottom winding out of phase (reversed), and this is the side sum.
Thanks!
I was trying to convert L+R stereo audio into M+S stereo using transformers, but screwed up bad with wiring last weekend. I think I see the error in my ways, but I need help verifying this.
What I have here is a pretty generic line-level application. A standard 1+1:2+2 transformer input, or alternatively 2+2:1+1 output. What's between input and output does not interest us in the conversion. It could be some 1:4 stepped up thing, or maybe 1:2+2 class AB amp. In the example below, it's wired 1:4.
I can see it clear as as day when written down or programmed in C.
Left + Right = Mid
Left - Right = Side
But I'm confused with this simple math on the transformer windings.
Is the following correct?
1. Left signal goes to both transformers top windings in phase.
2. Right signal goes to transformer 1 bottom winding in phase, creating a mid sum.
3. Right signal goes to transformer 2 bottom winding out of phase (reversed), and this is the side sum.
Thanks!