CAT CAT Amplifiers and Loudspeakers 1

Question 1

What does the damping factor of a power amplifier measure?

Accepted Answer

The ratio of load impedance to amplifier output impedance

Answer

The ratio of input voltage to output voltage

Answer

The thermal dissipation capacity of the output stage

Answer

The maximum continuous power output in watts

Question 2

Which loudspeaker enclosure type uses a tuned port to extend low-frequency response?

Accepted Answer

Bass reflex (ported)

Answer

Infinite baffle (sealed)

Answer

Open-back cabinet

Answer

Transmission line

Question 3

What is the purpose of a crossover network in a multi-way loudspeaker system?

Accepted Answer

To divide the audio spectrum and route each band to the appropriate driver

Answer

To match the amplifier impedance to the speaker load

Answer

To protect the tweeter from DC offset voltage

Answer

To boost the overall sensitivity of the enclosure

Question 4

In a 70-volt distributed speaker system, what component is mounted at each speaker to match impedance?

Accepted Answer

A line-matching transformer

Answer

A passive crossover

Answer

An impedance bridge

Answer

A balanced attenuator pad

Question 5

A power amplifier is rated at 500 W into 8 Ω. What is the expected output voltage (RMS) at full rated power?

Accepted Answer

63 V

Answer

40 V

Answer

100 V

Answer

125 V

Question 6

What does 'sensitivity' mean on a loudspeaker specification sheet?

Accepted Answer

SPL produced at 1 meter with 1 watt of input power

Answer

Maximum continuous power handling in watts

Answer

Minimum impedance seen by the amplifier

Answer

Efficiency percentage of acoustic energy conversion