Speakers that are lower than 4 ohms, or higher than 8 ohms, are rare, and usually reserved for the high-end.

Hello Peep,<BR><BR>Welcome to Ars.<BR><BR>The 3 ohm rating of the center channel only means you should not use any speaker that is less than 3 ohms. You can safely connect a 4, 8 or 16 ohm speaker ...

The speakers-in-series setup looks like a good option for you. <BR>Thought I'd mention my own experience though - I've been using a 6*9 inch 4 ohm car speaker as my center speaker for the last 6 ...

Full range sound from bookshelf speakers? Check out the new Radiant Acoustics CLARITY 6.2 and 4.2 loudspeakers featuring PURIFI USHINDI woofers and custom AMT tweeters in an innovative cabinet design.