bobrown14
Super Member
I just got home and there was a HUGE box in my living room. Opened it up and it was an M-4 in about as minty condition as I could ask for. I got a great deal BIN for Eprey.
Shipped doubled boxed from California to PA and the packing was way first rate. Foam all around with Styrofoam on the ends just like it was packed new in inner box then a TON of Styrofoam peanuts then outer box. Done the way its supposed to be.
Now on to what I'm interested in here. Can anyone offer some advice on tune up? I need to replace the lights on the switches first off. Is this beast ready for new caps yet or should i just plug her in and take her for a spin? How difficult is setting the bias and offset? Anyone out there would you be so kind to point me to a service manual, please. I popped the top and for a 120 watt amp this beast is VERY robust. This looks to be a mighty fine amp. VERY well built. I'm impressed with the build quality on this one for sure. I hope it sounds half as good as it looks. I can tell it can get hot as there is minor discoloration on some of the shields, looks like burnt dust - but not too bad.. mostly on the fins of the heat sinks, which BTW are impressive and large. This amp is overbuilt for sure. I bet I could drive my infinity QLS-3s with this one. I might try it unless anyone says nay.
I've not ever tried any Yamaha gear cept for a C-80 pre which is pretty nice. I'm now wondering in the C-4 mate to this one will be an improvement to the C-80 I have already. Anyone...?
My original plan for this amp was to power my front left and right channels off my surround sound system out of a 5.1/7.1 pre amp. I already have a single channel Yamaha powering the center channel. Well at least that was my "plan" to get it in the house. I'm glad I wasn't home when the UPS guy was trying to push the box in my front door while my girl was pulling from the other side!! Oh and I got ... jeeez another turntable today ... just as big a box too. I'm gonna have to do a lot of house work to work off this audio day. Good thing I tiled my fireplace this past weekend. Oh wait, I'm not done yet... uh oh.
Any help on the M-4 service stuff would be much appreciated.
Cheers,
Bob
Shipped doubled boxed from California to PA and the packing was way first rate. Foam all around with Styrofoam on the ends just like it was packed new in inner box then a TON of Styrofoam peanuts then outer box. Done the way its supposed to be.
Now on to what I'm interested in here. Can anyone offer some advice on tune up? I need to replace the lights on the switches first off. Is this beast ready for new caps yet or should i just plug her in and take her for a spin? How difficult is setting the bias and offset? Anyone out there would you be so kind to point me to a service manual, please. I popped the top and for a 120 watt amp this beast is VERY robust. This looks to be a mighty fine amp. VERY well built. I'm impressed with the build quality on this one for sure. I hope it sounds half as good as it looks. I can tell it can get hot as there is minor discoloration on some of the shields, looks like burnt dust - but not too bad.. mostly on the fins of the heat sinks, which BTW are impressive and large. This amp is overbuilt for sure. I bet I could drive my infinity QLS-3s with this one. I might try it unless anyone says nay.
I've not ever tried any Yamaha gear cept for a C-80 pre which is pretty nice. I'm now wondering in the C-4 mate to this one will be an improvement to the C-80 I have already. Anyone...?
My original plan for this amp was to power my front left and right channels off my surround sound system out of a 5.1/7.1 pre amp. I already have a single channel Yamaha powering the center channel. Well at least that was my "plan" to get it in the house. I'm glad I wasn't home when the UPS guy was trying to push the box in my front door while my girl was pulling from the other side!! Oh and I got ... jeeez another turntable today ... just as big a box too. I'm gonna have to do a lot of house work to work off this audio day. Good thing I tiled my fireplace this past weekend. Oh wait, I'm not done yet... uh oh.
Any help on the M-4 service stuff would be much appreciated.
Cheers,
Bob