Re: "Go get a cheap pair of speakers to use as surrounds until you can get good ones."
To quote a friend of mine, not only No, but Hell No! Not when it comes to listening to SACD! No, no, no, no, no. IMHO this not a case where something is better than nothing! (See note below)
Tanna11 since you don't have rear surround speakers don't use the "stereo" setting, still use the Ext. In input, but on your 3910 select the SACD stereo soundtrack off the SACD (or the High Res Stereo on a DVD audio disc) instead of the multi channel program. (They are actaully seperate programs on the disc, not just a mix down done by the machine). This way you won't be missing sound that was intended to go to speakers that you don't have. I'd do this until you can either get matching good quality speakers for the rear or replacing all your speakers.
Sorry for the strong opinion. I am completely in love with the SACD/DVD audio experience I get with my system! I've been happy with both 2 channel and multi, but when the multi is good it can be so amazing!!!!
Hope this helps,
Marie
Note: Multi-channel audio is mastered with 5 identical monitors angled toward this listener (the 3805 manual and some multi channel SACD disc inserts show this set up). For multi-channel music the rear surrounds are expected to be the same type and quality as the front spearkers - ideally all having full range reproduction capabilities. So the speakers, and their qualities, and arrangement are different than for movie surround - thus while I might agree with shokhead for movie surround effects I can't when it comes to music. This difference is why the 3805 (and higher Denons) have the A / B surround so you can select the "movie" surrounds for movies and the "music" surrounds for music. It was the best thing I did was to invest in those extra speakers for my SACD/DVD Audio, and even for listening to some 2 channel sources in Dolby PLIIx with the "music" setting and the music surrounds. I love what it brings to my enjoyment of both movies and music - and since the receiver can be programmed for which set to use for which source - it doesn't even take the push of a button. Well, after you invest in the speakers, cable, and give up the space.