BoilermakerFan
Headphoneus Supremus
- Joined
- Jan 2, 2008
- Posts
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- 12
Quote:
Well, thanks, but I already know "standard" 4-pin XLR wiring...
I was actually asking how the Rod Elliot's scheme changes if we try to connect it to 4-pin XLR instead of TRS...
...bit I think I got it: we use the same scheme - just that the grounds do not join on TRS sleeve but are completely separated (pin 2 = left ground; pin 4 = right ground).
Further, we can match headphone impedance and voltage swing of desired headphone with speaker amp's power... it is just a simple matter of recalculating R1, R2 and R3 resistance values and power ratings...
It seems that I just wasn't really thinking when I posed my question... Sorry.
Cool, I misunderstood your question then too.
Sounds like you have it sorted out. Not a difficult build to do. I'm working on a more complicated switching box to handle 3.5mm, 1/4" TRS, 4-pin XLR, and dual 3-pin XLRs to the same plus speaker wires with the integrated resistor network an the speaker binding posts of the box.