Hi all, 1st time site user so if I error in my post, please hit me up. I purchased the SC65 this weekend from a well known retail store. I think it's a great unit based on what I have heard from it, and my head still spins from the number of features it possess. After a few trial and error, I finally determined that my speakers are set up in a 5:1 configuration. I have (2) advent marbl II indoor/outdoor bookshelf speakers + 1 Criterion speaker, that my wife had purchased before we met. She worked in an electronics store and she bought the Criterion speakers with a Lafayette amplifier which I am replacing with the SC65 . Front Left (FL) up high is (1) advent speaker and on the ground is the Criterion, both speakers wired in series. I get a nice bass effect from the Criterion. On the Front Right (FR) up high is the other (1) advent. In the rear I have a similar speaker setup arrangement as in the front, so rear left (RL) ( 1 advent + 1 Criterion) and rear right (RR) (1 advent). Against best practices, I have a KLH sub woofer (KLH ASW8-120B) on the floor, since most sub woofers are in front. I leveraged this sub woofer from the Kenwood Home Theater system in the bedroom. This is more of a party room, where the system is in. I have a large family and when they come over we (wife and I) would throw a party...sometimes 30 people are in the room dancing. I have other accessories such as a "4 channel radio shack mixer" which I connect my CD player, a Kenwood multi cd player, model DPM 1074. I have some other gear, though not connected.
Use Case A: With the system turned on, SC 65 on, CD on, Mixer on but NOT using the mixer's amplifier, all speakers on, the FL and FR advent speakers are severely distorted...it almost sounds as if the speakers have reached their limit. As the sound is increased using the SC65 to about -15 db, the distortion seems to disappear or there is enough noise in the room that muffles the "distortion". In the other server configs that I tried, this distortion was not present. On the rear of the unit, I wired it as A: FL,FR + Surround Back L/R + Sub woofer 1
Use Case B: SC 65 tuner is on, and I am not going through the mixer, and CD player is off, at the low sounds, just listening to the radio there is no distortion.
Finally, when I had the speakers configured in the other ways, although the distortion maybe present, I did not hear it.
Any thoughts, advise ?