On Feb 3, 2012, at 9:55 AM, Igor Roshchin wrote: >> >> What is zero dB? Is it an arbitrary point? Is it linked to some >> undisclosed property of the unit? >> > > Typically, 0 dB represents 1 mW (milliWatt). > The formula for power is L_dB= 10 log_10 * (P1 / P0), where P0=1 mW > So, -90 dB - +15 dB would mean the range from 1 pW (picoWatt) > [non-audible] to ~32 Watt. That is probably smaller than the max output > of your tuner. >
snip > > 2) 0 dB corresponds to the max rated output power (say, 100 W). > Then it would mean that the amplifier can drive up to 3200 W, which is > way to much. > > So, I am confused by that specification. > > Igor Why not put a scope, or at least a DMM, on it and find out? Or, is it possible that Rick doesn't own an oscilloscope? -- Larry Colen l...@red4est.com sent from i4est -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
