To follow up on the posts from the KEF LS50 thread, I thought a separate thread ( as Frantz suggested) would be a good idea.
The question is what is the best way to connect a sub to the main system. I am in favor of the REL protocol, which essentially allows one to connect the sub via a speakon cable directly to the amp speaker connectors. As Frantz correctly points out, the main amp sees a impedance from the sub that is very high and therefore should have no impact on said amp. The question, as far as I can see it, is does this perhaps compromise the main speaker's in some way, because the amp is still powering the mains and potentially overpowering them. I do NOT see this as an issue, BUT let's see the opinion of others here.
The question is what is the best way to connect a sub to the main system. I am in favor of the REL protocol, which essentially allows one to connect the sub via a speakon cable directly to the amp speaker connectors. As Frantz correctly points out, the main amp sees a impedance from the sub that is very high and therefore should have no impact on said amp. The question, as far as I can see it, is does this perhaps compromise the main speaker's in some way, because the amp is still powering the mains and potentially overpowering them. I do NOT see this as an issue, BUT let's see the opinion of others here.