5.1 to stereo

[toothe]

does the denon 1507 a/v reciever output 5.1 into stero if only setup with 2 speakerS?

 

[badbob]

All av amps will downmix, when setup to "none" for your other speakers.
Or use the stereo line level outputs, that by default is downmixed
Or use a 2 channel only mode.