Led Output Level Meters - Benchmark MPA1 Instruction Manual

LED Output Level Meters

Each preamp channel is equipped with a four-
segment LED output level meter.
The LED's are driven by a peak detection and
stretching circuit so that very short transients
can be observed.
The first green LED (-20 dBu) illuminates
when the output signal has an amplitude of at
least -20 dBu.
The second green LED (+4 dBu) illuminates at
an output level of at least +4 dBu.
The yellow LED (+24 dBu) illuminates at an
output level of at least +24 dBu.
The red LED (+28 dBu) illuminates at an
output level of at least +27.5 dBu. The red
LED indicates a clip has occurred.
MPA1 Instruction Manual Page 10