Term
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Definition
| Peak level – Noise Floor. |
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Term
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Definition
•The result of atoms bumping into each other.
•Electronic Noise. |
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Term
| •WHY ARE WE FORCED TO DEAL WITH SYSTEM GAIN STRUCTURE? |
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Definition
•There is no standard noise floor level.
•There is no standard peak input/output level. |
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Term
| •HOW MANY VOLTS DOES 0 dBU EQUAL? |
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Definition
.775V
Derived from old telephone specs based on 600Ω and .001 watt (0dBm) “U” stands for undetermined. |
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Term
•WHAT DEVICES ARE USED TO ADJUST ATTENUATION WHEN SETTING A
SYSTEM’S GAIN STRUCTURE? |
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Definition
•External pads
•Onboard input/output controls provided they are “before” the pre-amp. |
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Term
| •WHAT IS THE PURPOSE OF A SYSTEM LIMITER? |
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Definition
| To act as an early warning device that allows you to take measures to protect the system. |
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Term
| •WHAT RATIO SETTING IS BEST FOR A SYSTEM LIMITER? |
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Definition
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Term
| •WHAT 3 METHODS ARE USED TO DETERMINE CLIP POINTS IN A SYSTEM? |
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Definition
•Piezo magic,
•Onboard indicators,
•Oscilloscope. |
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Term
| •BEFORE PHYSICALLY SETTING GAIN STRUCTURE, WHY DO YOU FIRST RUN SIGNAL THROUGH THE SYSTEM? |
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Definition
•To check the integrity of the system.
•You must fix grounding, power, and driver issues before attempting to calibrate a system’s gain structure. |
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Term
| •WHY WOULD WE ZERO OUT AN EQ BEFORE ATTEMPTING TO SET GAIN STRUCTURE? |
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Definition
•Any cuts or boosts will affect the EQ output during calibration.
•Log the existing curve before zeroing to prevent possible hurt feelings |
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Term
| •CALCULATE THE VOLTAGE SEEN AT AN OUTPUT WITH A METER READING OF 12dBu. |
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Definition
| 10ˆdb/20 x Reference Volts = Volts 3.08V |
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Term
| •WHAT IS AMPLIFIER INPUT SENSITIVITY? |
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Definition
| The amount of voltage required at an amplifier's input to produce full rated output. |
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