Roland M-480 line mixer
Hello.
I have a plan on changing opamps and caps in this beast.
The goal is to get the most clean sound out of it and also reduce noise.
Here's service manual.
http://www.filedropper.com/roland-m-480-service-notes-478433
http://pics.studiorepair.de/Roland/M-480/index.html
It contains upc4570, 4565, 5218 mostly, cheap, old, outdated opamps.
Caps are electrolitycs, ceramics, no film.
The sound of the mixer is compressed, tight, not open.
The goal - to get very transparent sound.
It shall be used to sum a lot of synthesizers before ADC.
So any noticeable alteration of the signal is not welcome.
Where to start ? What opamps to choose from ?
I thought bout changing 4570 dip to 5532.
4565 and 5218 are SIP, so 2114 can be a substitute.
Maybe somebody have any thoughts or expierence on this ?
Hello.
I have a plan on changing opamps and caps in this beast.
The goal is to get the most clean sound out of it and also reduce noise.
Here's service manual.
http://www.filedropper.com/roland-m-480-service-notes-478433
http://pics.studiorepair.de/Roland/M-480/index.html
It contains upc4570, 4565, 5218 mostly, cheap, old, outdated opamps.
Caps are electrolitycs, ceramics, no film.
The sound of the mixer is compressed, tight, not open.
The goal - to get very transparent sound.
It shall be used to sum a lot of synthesizers before ADC.
So any noticeable alteration of the signal is not welcome.
Where to start ? What opamps to choose from ?
I thought bout changing 4570 dip to 5532.
4565 and 5218 are SIP, so 2114 can be a substitute.
Maybe somebody have any thoughts or expierence on this ?
