69sixpackbee
Well-Known Member
I am new to the Yamaha camp and suffice to say, so far I am not very impressed. Please help to sway my opinion. I wanted a big amp so I went for the M-85. I have it paired up with a CX-800 Pre and a T-1 tuner. I have everything hooked up accordingly. For now I have some old boom box speakers on the wall to check it all out. Even if I wind up the separate volume pots along with the volume knob on the preamp the output is less than stellar. I figured that this 270 WPC monster would knock them off of the walls! Hardly..it is clear and fairly loud but my little Realistic receiver blows this one away! I even had my iPhone initially hooked into the inputs via the headphone out jack and figured I would get decent sound initially before I went and hooked up the rest of the separates. Let me explain a finding. I opened it up and checked the voltage idle adjustment per the service manual. The initial reading was a tad over 1.5mV on both channels. I twisted the pot quite a bit but I got it at a rock- steady 15.5mV. Great. Now when I engage the "Class A" auto button the readings were supposed to double (30mV). NOT!! Still 15.5mV. The indicator LED shows it is in "A" mode but it obviously is not working. Tried to get DeOxit in the switch. No difference. The service manual is not much help as the schematics are all but clearly legible. Right now, I am pretty much convinced I have a $500 boat anchor and am hoping that someone can give me a direction to look. I really can't fault the guy I bought it from as he said it worked fine with his Kappa 8's .
Thanx for any and all help!
Bud
Thanx for any and all help!
Bud