Well...the Quints are not bad speakers for starters, but with your receiver I would consider something bigger than them. Maybe the new reference Satellites for instance. Of course if room is not an object look and listen to the RF-35's...real sweet! I am using the 35's for my L/R's now.
I started with the Quints a year and a half ago and have since replaced all of them except for the two for the surrounds. Don't get me wrong these are great for the price and a good way to move to the wonderful world of Klipsch.
I agree! Are you wanting the Quints because of the price....size or what?
If size is an issue, I would definately go with the new Reference Satellites as Norman said. If size or cost is not an issue, you need to pair that receiver with at least a bookshelf or floor model. The Denon 3803 is a serious receiver and the Quints would not do it justice.
I own the Quintets with my Harman/Kardon AVR-225 reciever and they do a good job. That Denon reciever is a serious piece of equipment.
If it is a price issue then these are a great deal, if it is size, the new Reference satellites would suite you a little better and would get those lower freq.'s better.
But they are nice speakers... they def. do a good job.