Miller Audio NFS Assembly & Installation Manual

Photo 1: Prototype NFS PCB's, ready to install into a Dyna-70 / -120 Ultimate Amplifier
Parts Supplied:
2- PCB's for Left & Right Channels
6- Header Pins (kit includes extra parts, these are easily damaged with too much heat)
2- Jumper Links (only one is used per PCB; it goes on the desired impedance Header Pin)
2- 680 pF/400V 5% Film Caps
2- 470 pF/400V 5% Film Caps
2- 220 pF/400V 5% Film Caps
2- 2.4K Ohm 1% Resistors
2- 3.9K Ohm 1% Resistors
2- 7.5K Ohm 1% Resistors
6 inches each of 18 ga. stranded wire in Yellow (16-Ohm), Orange (8-Ohm) & Brown (4-Ohm)
2- 8/32 Standoffs
Before starting assembly, we recommend:
 That you inspect the kit and ensure you have all parts listed above;
 You read this Kit Assembly and Installation Manual 3-4 times to ensure you understand and
can follow the assembly and installation steps as presented;
 You install the smallest, shortest, or lowest height parts first, followed by larger / taller parts
last.
 You have access to the original Dynaco ST-70 Assembly Manual.
WARNING! Be sure to prevent any solder or wire debris from falling into the open Output
Transformer openings within the chassis, ref. Photo 2 below. If any solder, metal particles or
pieces of wire fall into the transformer, you must remove the Transformer and clean it out to
prevent the possibility of a short in your Output Transformer. Use some duct tape, a small rag cloth
stuffed into the openings, etc. to keep anything from falling into the transformer! Remember this
warning, you will read it again !
Negative Feedback Selector (NFS)
Kit Assembly & Installation Manual
for Dyna-70 & Dyna-120 Amplifiers