CAT Amplifiers and Loudspeakers Flashcards
6 cards from real CAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CAT Amplifiers and Loudspeakers flashcards as text
What does the damping factor of a power amplifier measure?
Answer: The ratio of load impedance to amplifier output impedance
Damping factor is the ratio of the load impedance to the amplifier's output impedance and affects how well the amp controls loudspeaker cone movement.
Which loudspeaker enclosure type uses a tuned port to extend low-frequency response?
Answer: Bass reflex (ported)
A bass reflex enclosure uses a tuned port or slot that resonates to reinforce bass frequencies and extend the low-frequency response.
What is the purpose of a crossover network in a multi-way loudspeaker system?
Answer: To divide the audio spectrum and route each band to the appropriate driver
A crossover network splits the full-range audio signal into frequency bands so that each driver (woofer, mid, tweeter) only receives the range it is designed to reproduce.
In a 70-volt distributed speaker system, what component is mounted at each speaker to match impedance?
Answer: A line-matching transformer
Each speaker in a 70V system has a small step-down transformer that converts the high-voltage line to a level the speaker voice coil can handle.
A power amplifier is rated at 500 W into 8 Ω. What is the expected output voltage (RMS) at full rated power?
Answer: 63 V
Using V = √(P × R) = √(500 × 8) = √4000 ≈ 63 V RMS.
What does 'sensitivity' mean on a loudspeaker specification sheet?
Answer: SPL produced at 1 meter with 1 watt of input power
Loudspeaker sensitivity is measured as the sound pressure level (in dB SPL) produced at a distance of 1 meter with 1 watt of input, indicating how efficiently the driver converts power to sound.