Using Your Rumour Or Mangler; The Front Panel; Input Level Knob & Input Meters; Input Level Leds - Kurzweil Rumour User Manual

Chapter 3

Using Your Rumour or Mangler

The Front Panel

Let's examine the front panels of the Rumour and Mangler, from left to right:
Input Level Knob & Input Meters
On the far left is the INPUT LEVEL knob, which controls the analog input gain. The range of
the input control has a range of 18dB, allowing for signal levels from +4dBU to +22dBU, and is
wide enough to support +4 dBU or –10 dBV operation. Being an analog input level, this knob
does not affect the digital input.
Turn the knob all the way to the left (counterclockwise) to set the input gain to the minimum
level; this is a good place to start for +4dBu "pro" level signals. (Note that turning the input
level knob all the way "down" in this way does not turn off the input.) For -10dBV level signals,
turn the knob clockwise and use the LEDs, as described below.

Input Level LEDs

The three LEDs (green, yellow, red) above the INPUT LEVEL knob measure the analog or
digital input signal.
The green light comes on for signal levels from -48dB up to -12dB.
The yellow light comes on for signals between –12dB and 0dB.
The red light comes on for signals 0 dB or greater. This means the incoming signal is too loud,
and has digital distortion in the form of "clipping," which may not have a pleasant effect on the
sound.
A good, nominal input signal level for the device is about -10dB. The rule of thumb is that
mostly green with flashes of yellow for peaks is ideal. (Or in the case of purposeful, consistently
loud levels mostly yellow with some green is OK too.)
Using Your Rumour or Mangler
Input Level Knob & Input Meters
3-1