Yamaha HTR 5640 and Tannoy FX5.1

When i change the speaker db levels on the amp, i can increase it from -20db through 0db up to +10db.
However when i try this on the Front Left & Right speaker settings, the level only goes through -20db up to 0db, i cannot go into the + settings ?
I can set my centre and rears to +6db, but cannot change the Front LEFT and RIGHT above 0db
Ive tried all my connections and they seem ok, sound input is from a Yamaha DVD player through component or SKY + through Optical.

Is this normal... ?

 

heeeeeeeeeeeelp

 

This is quite normal. Are you setting the levels using a sound meter or just by ear? You need set the volume of the front right at quite a high level (75db) and balance the rest to the same level. This is quite difficult by ear but you should be able to get fairly close.

 

I spoke to Yamaha today and unlike the surround speakers the front left and right speakers do not go above 0db on sound level.
At least i know now