Paging lesson 5

Question 1

line matching transformers and associated speakers are connected in _________ across the amplifiers output

Answer 1

parallel

Question 2

impedance mismatch becomes a problem on _______ if more than one or two speakers are connected

Answer 2

direct connection systems

Question 3

in any installation care should be taken to keep as much separation between speaker lines and ___________

Answer 3

input lines

Question 4

___________allow volume control on constant voltage speakers

Answer 4

attenuators

Question 5

always check _______ for speakers mounted in an area with collision potential

Answer 5

impact rating

Question 6

________speakers are heavy and sound good in big open areas

Answer 6

pendant

Question 7

________ and _______ are wired in parallel across the amplifiers output

Answer 7

line matching transformers and speakers

Question 8

in direct connection systems, wire runs of more than 100 feet should use what size speaker wire

Answer 8

16 AWG or larger

Question 9

__________ speakers will lose up to 1/2 of their normal volume and will not sound nearly as well

Answer 9

out of phase

Question 10

in phasing of speakers with 1.5v dry cell + if movment is __________, - if movement is _________

Answer 10

outward

inward

Question 11

________ mismatching will not sound good but wont cause damage.

Answer 11

upward

8 ohm speaker to 4 ohm amplifier

Question 12

transformer power loss is usually stated in terms of?

Answer 12

dB insertion loss

Question 13

in complex installations having large numbers of speakers and/or different types of speakers the use of _________ can simplify power distribution and level adjustment

Answer 13

matching transformer

Question 14

in a space with variable ambient noise a _______ is more effective than a _______.

Answer 14

ambient noise sensor

attenuators

Question 15

near orbit speakers offer an extremely wide coverage pattern up to ___________

Answer 15

140 degrees

Question 16

horn loudspeakers are highly ________

Answer 16

highly directional

Question 17

runs of 50-100 feet should use _________ AWG wire

Answer 17

18awg

Question 18

line matching transformers and speakers are wired in ________ across the amplifiers output

Answer 18

parallel

Question 19

speaker lines can be run as either ______ lines

Answer 19

balanced or unbalanced

Question 20

______ mismatching should be avoided

Answer 20

downward

4 ohm speaker to 8 ohm amplifier

Question 21

throat flare is_______

Answer 21

the shape of the horn

Question 22

out of phase speakers will lose up to _____ of their normal volume and will not sound nearly as well

Answer 22

1/2

Question 23

high fidelity speakers are usually quite _______

Answer 23

heavy

Question 24

horns loudspeakers are typically used ________

Answer 24

outdoors

Question 25

when more than one speaker is used in an area it is important to _____ in order to reduce cancelations

Answer 25

make sure they are in phase

Question 26

when music will be played relatively loud use a _______ speaker

Answer 26

high fidelity speaker

Question 27

__________ is the most efficient and cost effetive method for systems that have only one or two speakers

Answer 27

direct connection

Question 28

transformer loss = _________

they are similar to ______

Answer 28

insertion loss

attenuation

Question 29

________ becomes a problem on direct connection systems if more than one or two speakers are connected

Answer 29

impedance mismatch

Question 30

impedance matching

Answer 30

anytime 2 or more speakers are connected to a direct connection output

Question 31

attenuators allow volume control on _______ speakers

Answer 31

constant voltage