Is there a way to change a chennel out from +4dbu to -10dbv

Other than using an external pad… is there a way to set the output of a channel from the normal +4dbu to -10dbv for a streaming device to youtube?

Pull the fader down 14db.

Please look at the differences between dBu and dBV!
Furthermore, a simple level reduction wouldn’t be what the OP requested, as he want -10 dBV at the output instead of +4 dBu, when his meters are at 0 dB.

Unfortunately, your regular outputs can’t be switched that easily, but it would be possible with inserts.
So you could route the streaming output channel to a matrix and patch its insert send to your output jack(s).
And for that, you could indeed set -10 dBV.

Thank you very much!!