LS100 WRITTEN TEST EXAM
QUESTIONS AND ANSWERS GRADED A+
2026
What are the 7 items needed to create a PA System (In Order) - ANS 1) AC Power
2) Input Device (Microphone)
3) Mic-Pre/Console
4) Graphic EQ
5) Crossover
6) Power Amps
7) Speaker
What color is the standard color for neutral in single phase power in the US? - ANS White
What color is the standard color for hot in single phase power in the US? - ANS Black
What color is the standard color for ground in single phase power in the US? - ANS Green
What voltage is supplied at he standard American wall outlet? - ANS 120VAC
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 1
, What is the concept of +4 and -10dBU? - ANS Different operating levels of line level
Pin 1 on an XLR is? - ANS Ground
Pin 2 on an XLR is? - ANS Positive
Pin 3 on an XLR is? - ANS Negative
How many active crossover points are used on the Club PA - ANS 1
Can you change a crossover point on a passive crossover? - ANS No
Every time you add a console to an analog split, what happens to the signal? - ANS The signal
is decreased to each console
What type of splitter system losses no mic signal due to a split? - ANS Digital Splitters
What does A VOM measure? - ANS Resistance Ω
AC & DC Voltage
What does a pre-amplifier do in a mixing console? - ANS Increases mic level signal to line
level
When mixing monitors at monitor land, what is more commonly used: post-fader aux busses or
pre-fade aux busses? - ANS Post-fader aux busses when mixing from Monitor land. Because
the post-fade send will have all the effect of EQ and fader movement
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 2
QUESTIONS AND ANSWERS GRADED A+
2026
What are the 7 items needed to create a PA System (In Order) - ANS 1) AC Power
2) Input Device (Microphone)
3) Mic-Pre/Console
4) Graphic EQ
5) Crossover
6) Power Amps
7) Speaker
What color is the standard color for neutral in single phase power in the US? - ANS White
What color is the standard color for hot in single phase power in the US? - ANS Black
What color is the standard color for ground in single phase power in the US? - ANS Green
What voltage is supplied at he standard American wall outlet? - ANS 120VAC
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 1
, What is the concept of +4 and -10dBU? - ANS Different operating levels of line level
Pin 1 on an XLR is? - ANS Ground
Pin 2 on an XLR is? - ANS Positive
Pin 3 on an XLR is? - ANS Negative
How many active crossover points are used on the Club PA - ANS 1
Can you change a crossover point on a passive crossover? - ANS No
Every time you add a console to an analog split, what happens to the signal? - ANS The signal
is decreased to each console
What type of splitter system losses no mic signal due to a split? - ANS Digital Splitters
What does A VOM measure? - ANS Resistance Ω
AC & DC Voltage
What does a pre-amplifier do in a mixing console? - ANS Increases mic level signal to line
level
When mixing monitors at monitor land, what is more commonly used: post-fader aux busses or
pre-fade aux busses? - ANS Post-fader aux busses when mixing from Monitor land. Because
the post-fade send will have all the effect of EQ and fader movement
@COPYRIGHT 2026/2027 ALLRIGHTS RESERVED 2
