newbie question- Sony HTIB speakers with Denon 1713

Hi,

First of all I must say that I am a noob to AV receivers and speakers. Recently I bought a brand new Denon AVR 1713. I also had a old set of Sony HTIB speakers and they marked 2.7 ohms.

I connected Front L&R and center to Denon 1713. After Audyssey setup, here is the parameters set by 1713.

Speaker config:
Frone: large
Center: Small

Levels:
Front L: -2.0 db
Front R: -2.5 db
Center: -4.5db.

Speakers worked so far however I heard that those speakers might damage my Denon receiver.
Is my setup ok? Will my new receiver survive those HTIB speakers?

Thanks,
Edited by tallmike - 2/3/13 at 1:01pm

good to know my limits. I will be careful before I upgrade to some "real" speakers.