FL DSP5200 :12'6" +ve -0.5db
FC DSP5200H :12' +ve -3.0db
FR DSP5200 :12'6" +ve -0.0 db
Sub SW5500 :12' +ve -16.0db
SL DSP5000 :7' +ve -3.5db
SR DSP5000 :5'6" +ve -2.0db
RL DSP5000 :7'6" +ve -3.0db
RR DSP5000 :6' +ve -4.5db

My M-s have never been negative to me... smile

ken

In case you're wondering, I can't reach 75db with my lowest output speaker; I cal everthing down to it's 72db level...