The Beginning
Hi have a bunch of parts from a decisioned Yamaha Console that I am trying to put on Pair of Classic Audio VP25 500 Series Cards / full kits.I have seen some variations of the Yamaha and some retro fit pre amps done with these parts.I am going to give it a go as the Classic Audio and Jeff's kits are great . I have done some 312 Style pres already as my first DIY project for dummies.The Yamaha project is not exactly the same as it uses Yamaha NE 8200 Op Amp , Tamura input Transformers GA80980, and Output TAM GA81720 transformers .( 600:600 I think)I am not sure what further changes I need to make it run properly on the Classic Audio VP25 Card .I have seen a couple done but am unsure about some the challenges and values to build with these parts.I know I need to find a schematic for the Pm2000 zobble network( seems like the easiest way to go and that network was designed to work with the components I am putting in the VP 25 circuit) I hope it is the first step needed to match the Yamaha Op Amp etc to the Classic Audio VP25 PCB board .I have been told that I need to change a few resistor Values as well ,but am unsure about what ones and why. Also is there anything else that I need to be aware of or watch out for when substituting these parts?Thanks ,just getting it going and trying to make the Yamaha Transformers fit or mount( to glue or not to glue?
Not sure how to mount the Tamura input transformer ,Looking for wiring diagram of it and advice on these Op Amps running at 16 Volts rather then at 24 volts, what I think is normal for the Yamaha NE 8200 Op Amp
Does anyone have an experience with this project idea? ThanksTons
Hi have a bunch of parts from a decisioned Yamaha Console that I am trying to put on Pair of Classic Audio VP25 500 Series Cards / full kits.I have seen some variations of the Yamaha and some retro fit pre amps done with these parts.I am going to give it a go as the Classic Audio and Jeff's kits are great . I have done some 312 Style pres already as my first DIY project for dummies.The Yamaha project is not exactly the same as it uses Yamaha NE 8200 Op Amp , Tamura input Transformers GA80980, and Output TAM GA81720 transformers .( 600:600 I think)I am not sure what further changes I need to make it run properly on the Classic Audio VP25 Card .I have seen a couple done but am unsure about some the challenges and values to build with these parts.I know I need to find a schematic for the Pm2000 zobble network( seems like the easiest way to go and that network was designed to work with the components I am putting in the VP 25 circuit) I hope it is the first step needed to match the Yamaha Op Amp etc to the Classic Audio VP25 PCB board .I have been told that I need to change a few resistor Values as well ,but am unsure about what ones and why. Also is there anything else that I need to be aware of or watch out for when substituting these parts?Thanks ,just getting it going and trying to make the Yamaha Transformers fit or mount( to glue or not to glue?
Not sure how to mount the Tamura input transformer ,Looking for wiring diagram of it and advice on these Op Amps running at 16 Volts rather then at 24 volts, what I think is normal for the Yamaha NE 8200 Op Amp
Does anyone have an experience with this project idea? ThanksTons
