Details Title: ASP Description: ASP Total Flash Cards: 27 Created: 04/20/2007 13:02:01		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Music Flashcards
Cards in this set: Term What is another common name for a constant voltage system Definition High impedance Distributed 70 volt Term Where are constant voltage audio systems commonly used Definition Commercial Establishments Term Why is a Transformer Required at each speaker in a distributed system Definition Commercial Power distrobution Step down Voltage Term What are three voltages that are commonly used for constant voltage audio systems Definition 100 volts 70.7 volts 25 volts Term How are speakers rated in distribution systems Definition DBspl per wattage tap Term How many Speakers can be connected to an amp in a constant voltage system Definition As many as you want as long as you do not exceed amp capacity also keep an eye on ohm load impedance Term Besides the power used by the speaker what are two other factors to concider when concering power loss Definition Transformer Insertion loss *(TIL)* loss due to cable Term What is the industry rule of thumb used when figureing required amp output wattage for a constant voltage system Definition Total tap wattage + 20% amp wattage or total tap wattage x 1.2 = amp wattage number of speakers zones and control wire requireement Amp Requirement Term Why should you turn on amps after you turn on all other electronic equipment in a sound system Definition So you dont get a pop in the system Term Name and explain some methods used to test a driver Definition 9 volt battery DMM ohms and continutity Sine wave sweeper Term Name 3 benifits of using ferrofluid Definition Heat dicipation Keep coil centered in the gap Extra Mechanical damping Term Name 3 types of material used to make compression driver diaphrams Definition Alluminum Titanium Beryllium Term What is dynamic range Definition Peack level minus noise floor Term What is thermal noise Definition Electric noise Term Why are we forced to deal with a systems gain structure Definition because there is no standard peak level or noise floor Term What is the benefit of laying out a systems gain structure on paper Definition Helps you make intelligent design and purpose decisions Term How many volts does 0dbu equal Definition .775 Term What ways are attenuation ajusted to set a systems gain structure Definition on board and external Term How do we deal with aligning the crossover ouputs with each amplifier input it feeds Definition Each must be delt with as a seperate gain structure branch Term What is the purpose of a system limiter Definition early warning device that allows you to protect your system Term What ratio setting is best for a system limiter Definition 8:1 or greater Term What four methods are used to determine clip points in a system Definition on board lights oscilliscope Piezo tweeder DMM Term When using an oscilliscope to find clip points how do uou connect the positive and negative leads of the scope to the audio lines Definition Tie low to ground Pin 3 to pin 1 positive to negative Term When physicaly setting gain structure why do you first run signal through the system Definition see if it works to check systems integrity Term Why would we zero out an eq before attemting to set gain structure Definition Any cuts or boosts will affect callibration Term Audio montage Definition In a typical audio circuit it is beneficial to have the load impedance 10 times the source imp to insure efficient voltage transfer from device to device Term What is amplifier sensitivity Definition The amount of voltage required at input to produce full rate output