Форум гитаристов

Calibration of the Monitoring System
The input signal level of the Crimson and the input sensitivity of the power amps or active
speakers should be matched to ensure a proper overall gain. An inappropriate matching
results, for example, in an extremely high monitoring level with a fairly low volume setting
(at 9 o‘clock). Likewise, settings above two o‘clock should sound really loud, otherwise it is
indicative of a matching problem.
Important: During calibration it can get very loud, so don‘t forget to wear ear protection. For
calibration we recommend using a SPL Meter (where SPL stands for „Sound Pressure Level“).
Place the measuring microphone at the listening position and playback pink noise from
a generator calibrated to 0dBu. Each measurement should be done with one channel (and
loudspeaker) at a time. 83dB SPL at the listening position is a good and very common reference
value.
Adjust the volume control until the SPL meter reaches 83dB with pink noise.
Ideally, 83dB SPL should be reached when the volume control is near the 12 o‘clock mark.
Write down the exact value for 83dB SPL at the listening position. If it only reaches 83dB SPL
above two o‘clock, increase the power amps‘ or active loudspeakers‘ input sensitivity (higher
dB value). Conversely, you should decrease the power amps‘ or active loudspeakers‘ input
sensitivity (lower dB value) when it indicates 83dB SPL before reaching the 12 o‘clock mark.