# rstt

 The flashcards below were created by user gregjohnson on FreezingBlue Flashcards. whats the voltage in the wall? what freq 120;60 what is ground hum? the result of the leakage of ac into the audio ciruit what are elebtrical breakers rated in amps audio cables should be bundled with power cables false surge compressors clean up incoming voltage and regulate it false electrons are negatively or positively charged negative what do resistors limit current what are the 3 formula's for voltage E=IRE=P/IE=square root of (PR) 3 formula's for current I=E/RI=P/EI=SQ ROOT OF (P/R) 3 formula's for resistance R=E/IR=E(SQ)/PR=P/I(SQ) 3 formula's P=IEP=E(SQ)/RP=I(SQ)*R to cut down electrical hum, all audio needs to be on the same circuit false what's the formula for total resistance for a parallel circuit 1/1(1/r1+r2+etc...) what is the definition of impedance total opposition to crrent in a AC circuit what does each letter represent Z,X,L & C Z-impedance-mesured in ohmsX-reactance-mesured in ohmsL-inductance-mesured in henriesC-capacitance-mesured in farads tranformers have 2 windings called primary and secondary transformers are not used for power gain the aes for 3 pin xlr audio cable 1=ground 2=hot3=cold what is the acronym for electromagnetic field emf radio frequecy interferance is rfi define distortion unwanted alteration of a waveform if you lift or disconnect a ground will a signal pass yes power amps get turned on last true since left and right is critical... they should be parallel false 3 way speaker system refers to # of speakers and/or frequency range devided into 3 groups the wattage or power rating of an amp should be less than the speaker false s/n ratio is what signal to noise ratio which is larger dynamic range or s/n dynamic range how can balanced outputting device be interfaced to unbalanced input of another device short cold to ground the DI box serves what purpose all the above what is the difference between active and passive active needs power while passive requires no outside power source which has a hotter output professional grade 10k output impedance is an example of a high or low high diffusion is the reflection of certain frequencies over other what has higher distortion specification active or passive passive what is slew rate measurments of amps ability to respond to transient what is clipping peaking, amplitude distortion identify decible scale dbu-prodbv-consumer Authorgregjohnson ID121419 Card Setrstt Descriptionrstt review notes Updated2011-12-07T04:10:45Z Show Answers