
Surround your listening space with crystal-clear audio with these Pioneer Elite SP-EBS73-LR bookshelf speakers, which feature 2-way CST concentric Dolby Atmos drivers to ensure enveloping sound. The 5-1/4" aluminum woofers provide thumping low-end response.
A: With a 5.1 receiver you would just use this speaker as a typical surround speaker, this speaker does have a separate input on the back for the up-firing Atmos driver, but you would not use it like that for a 5.1 system - the inputs on the back can stay bridged together for a 5.1 system (the bridge is just a metal bar on the back that connects the separate inputs together) - but you would be ready to upgrade later with an Atmos receiver, then you would un-bridge the connections and feed them separately!
A: Yes speakers will play any signal you send them. The problem is how do you get the 2 recievers to play the same signal?
A: Forgive me if I misunderstood your question (or if my answer is quite late), but as I interpret your question: If you are asking about the Pioneer Elite SP-EBS73-LR dolby atmos speakers, there are two separate connections on each speaker. One connection for the front speaker (if that is where you choose to connect it) and one for the height speaker. So the two speakers will occupy four speaker connections from your receiver. I have a Denon AVR-X1300 which has no specific "height" speaker connections. I had to connect the height speakers to my "surround back" connections. ( I have 5 speakers (no sub)). After looking at the configuration of your SC-1, it appears you have a separate connection labeled "Top Middle" where you are able to specifically connect the height portion of your dolby atmos speakers. Hope that helps.
A: they will do good
Q: Will it work good with SC-91
A: according to the Klipsch web site http://images.klipsch.com/R-15M_-_Spec_Sheet_635530199326096000.pdf they are 8 ohms compatible
Q: Do the top drivers only work if you have Atmos (or similar)?
A: They have two separate connections top and bottom, you could use the top speakers as a presences speakers if your AV receiver has the outputs but for stereo or two channel operation you should only use the lowers speakers which are directed to the listening area.
Q: Mounting
A: No, these speakers did not come with any way to mount on a wall. They are fairly small so will fit on a fairly small shelf, however.