Manual
Table Of Contents
- Introduction
- Active & Vacuum Tube Ribbon Technology
- Description
- Applications
- Ribbons in the Digital World
- User Guide
- Operation
- Power Supply Input Module
- Amplification Considerations
- Stereo Microphones and Ground Loops
- Microphone Techniques
- Specialized Stereo Recording Techniques
- Care and Maintenance
- Features
- Specifications
- Polar Pattern
- Frequency Response
- Wiring Diagram
- Warranty
5. Avoid dropping the microphone. An accidental fall to a hard surface could stretch one or both
ribbons and, depending on the nature of the fall, possibly necessitating a complete overhaul
of the microphone.
Power Supply Input Module
The power OFF/ON switch and the Power Input Module are
located on the rear side of the power supply (Image 1). The
Power Input Module (Image 2) serves multiple functions and is
integral to the design of the power supply. It serves as a means
to connect and remove the AC mains cable, it houses the AC
line fuses, provides a convenient method of voltage changeover,
and also serves as an RF line filter. AC power is supplied to the
unit via a removable IEC type business machine cable that
plugs into the bottom section of the Power Input Module. The
power cord must be removed to gain access to the door to
change fuses or to set the unit to a different AC input voltage.
Fuse Replacement
Two fuses are used to protect the circuitry of the power supply, one on
each side of the mains line. To inspect or replace the line fuses (necessary
when changing voltage settings), first remove the power cord. Insert a
medium size flat-blade screwdriver into the lip at the top of the module
and gently pry the door open (Image 3). Be careful not to damage the
painted surface of the chassis housing.
The fuses are located inside two carriers, each marked with an arrow
pointing to the right. These carriers can be pulled out with the tip of a
screwdriver blade or a pair of needle nose pliers (Image 4). Once the
carriers are removed, the fuses can be pulled out with your fingers.
Replacing the fuse carriers is the reverse of removal. They can only be
inserted with the arrow facing to the right and they should go in very easily.
CAUTION!
Never attempt to bypass a fuse or use one of a higher rating!
Not only is this an unsafe practice, but it will void the factory
warranty.
Voltage Changeover
The power supply can be set to operate from voltages ranging
from 100 to 240 volts AC. For 230V operation, use the 240V
setting. A small window at the rear of the Input Power Module
will display the current voltage setting. To change operation to
a different AC voltage requires repositioning the selector drum
7
Image 1
Image 2
Image 3