Hi. I am a noob to the forum and to some extent the home theater hobby. My current set up is made up of Boston Acoustics CRC center, CR7's for the l/r front, and also the surrounds. I am using a HK AVR 225 to power everything. I recently came across a very good deal on some Monitor Audio speakers. After listening to them, I couldn't pass on the great deal. The Monitor Audio set up consists of 2 b4's for the front l/r, a Bronze center, and 2 b2's for the surrounds. The b4's have a sensitivity rating of 91 and a nominal 6ohms. The center is also rated at a sensitivity of 91 but at a nominal 8ohms. The b2's have a sensitivity of 90 and a nominal 6ohms. My HK AVR225 only mentions 8ohms speakers. Can I use it to power the Monitor Audios safely? Would something like a Denon 1804 or NAD T742 be better? Most consumer receivers seem to only be rated at 8 ohms. In my research, I almost always find mention of either 8 or 4 ohms. Sorry for the long post. I would appreciate any advice you can offer. Thanks.