Originally Posted by laserjock II
4 ohms speakers?
6 ohms on the mains and the center, 8 ohms on everything else.
I just realized I made an error. The mains are in fact 96 dB efficient but the other
8 speakers (heights, wides, side and rear surrounds) are only 92 dB efficient. Still pretty easy to drive but as I stated, I like it loud sometimes.
I turn it down when I start to smell "electronics" smoke (typically crossover capacitors starting to overheat but I have had resistors burn up also). It is so clean and loud that you have to be careful.I know that distortion is really what hurts your ears from lower end receivers/amps that are turned up so loud that they start to clip but it can also hurt your ears from just high dB levels alone. My A/V room is appx 15' x 25' with 11' ceilings and it sounds like a rock concert in here sometimes. Stuff on the walls rattling (even with the bass turned way down using Audyssey calibration), BluRays in the closet vibrating off the shelves. A close friend of mine showed up to my last "Movie Night" a little late (In fact, I'm having 6 or 8 friends over this friday night for rib eyes, baked potatoes and watching "Lone Survivor"). We had already started watching the movie and he said when he got out of his car in my driveway, he heard the front gutters vibrating/rattling. lol.
I know that there are some extremely knowledgeable people on AVS so I hesitate sometimes to share how I like to listen to music and watch movies for fear of being ridiculed but what the heck.., everyone is different.
I hope to have discretionary funds available in the next 90 days to buy 4 more 18" passive sealed subs along with another pro style amp. I think I'm appx 75% where I want the bass to be and I think these subs will get me the rest of the way to my goal. My speakers are plenty loud. My mains are rated for 150W but I routinely feed them many times that amount. I don't think I can handle them being any/much louder anyway. When listening to some great jazz like Jackiem Joyner's "I'm Waiting For You" or maybe some Norah Jones, It sounds so real it gives you goose bumps. You can sit in one of my recliners, close your eyes and it is almost a spiritual experience.
I live near, and work in Nashville Tennessee. As you can imagine, every other person here sings or plays some sort of instrument. I used to work with a guy that is actually in the rock and roll hall of fame. (you would be surprised what kind of jobs some of these guys had before they made it big). Another friend, that will be here on friday night, has won several Dove Awards and is famous in the Christian Music world (he used to sing back up for Elvis in Vegas back in the day!) The live music here is second to none. My system, with well recorded music, comes very close to "live".
My current system will most likely be the best I will ever have (I'm 52 yrs old. In 10 or 20 years I will probably be content with whatever speakers come with the TV that I happen to own at the time!). A couple of months ago, after extended multi channel iTunes listening, my ears were ringing pretty good. This was kind of "normal" for me but it usually subsides in a day or two. In this case, my left ear rang for several weeks. I thought I had permanent hearing damage. It finally came back (or at least 95%+) but it did scare me a little.
I have listened to loud/very loud music for 30+ years but that was the first time I had it wait that long before my left ear hearing came back. Age catches up with all of us. People have told me for decades that I was going to damage my hearing but I never had many issues. I believed (and still do) that clean loud is so much easier on your ears than distorted sound.
Sorry to ramble on but in closing I will say; In doing research and auditioning many high end systems (McIntosh, Krell, Mark Levinson, Lexicon, Revox, Theta, Anthem, etc, as well as many high end speakers),I can say without question that I cannot tell much/any audio difference in quality amplifiers. I personally could tell a Big Difference in speakers. The Denon AVR-4520 is an incredibly good sounding piece of equipment. In my humble opinion, it rivals much more expensive "separates". In fact, I would say most people in a blind test could not tell the difference in this unit and some equipment that costs many times what this 4520 costs. Again, not trying to step on any toes, but I know in my personal experience, when I have purchased something that cost thousands of dollars, I WANTED it to sound much better than what I was replacing but in fact sometimes there was very little, if any, difference. I think technology like Audyssey does make a big difference but amplifiers, not so much. If you don't listen to insane levels like I sometimes do, I think the internal amplification of the 4520 will more than please 90+% of the people that purchase it. If you decide you want external amplification, well, that will put a smile on your face also...
Thanks Everyone for letting me share. Doing research on this site, as well as a few others, have helped me greatly in the selection of various equipment and getting the most bang for my buck.
P.S. I may be a neophyte when compared to some of the Extremely Knowledgeable people on AVS but this is just a hobby. When talking guns and weapons, I can hold my own with just about anyone...