Hi and thanks for checking this out...
I'm researching for my friend who has a new Denon E400 with new Klipsch speakers. Unfortunately I don't have the model numbers of the speakers right now. I've been researching and have found 3 possibilities for this "high volume shut down" problem, and would like to get an opinion from your awesome Forum members.
The issue here is that the system plays fine until some volume (80% + - ) is added. The receiver shuts down completely. This usually after 1 - 2 songs.
My non-professional guess is that the speakers can't handle the power/volume. The "Front" speakers only have a 5" (approx.) main cone, and I think he needs bigger main speakers. Is this possible?
1.) I've found the main cause for shut down is: Speaker wire shorted. This has been ruled out.
2.) From The Official Denon Thread:
d. AVR shuts down at higher volumes: A good rule of thumb is to not raise the master volume above 0db (relative) or 82 (absolute) as it may result in clipping/distortion from the speakers. You can set the "Volume Limit" setting to 0db to ensure this doesn't happen. If the AVR is shutting down at volumes lower than 0db (eg. -10db) then it is most likely the result of a loose speaker wire from one post on the back of the AVR touching another post so verify all speaker connections are clean.
3.) x. Why do my small speakers get set to LARGE?: The AVR will set any speaker to LARGE if it detects it can handle frequencies < 50hz in your room (regardless of what they are rated for on paper). If there is no sub in your setup, the front mains must default to LARGE, otherwise if there is a sub, then manually set the speaker to SMALL with at least a 60hz or 80hz crossover.
4.) Mis-matched speakers: These Klipsch speakers were recommended by Best Buy to go with the E400, but the Front (main) speakers just seem too small to me.
Anyway, if someone has any additional ideas, it would be greatly appreciated.