Welcome to our quiz featuring 10 questions about bass and subwoofers!

Take a read and see how you stack up against the questions, and be sure to check out our other quizzes as well.

 
 
1.) The wavelength of a 40 Hz sine wave is:
A. 18.3 ft (5.58m)
B. 27.5 ft (8.38m)
C. 40 ft (12.2m)
D. 80 ft (24.4m)

 
2.) A bass reflex loudspeaker is also known as:
A. An omni-bass
B. A contra-bass
C. A vented baffle
D. None of the above

 
3.) In addition to its inherent extended LF range, a ported (vented) enclosure’s frequency response:
A. Extends much higher into the HF range than other LF loudspeaker systems
B. Measures 6 dB SPL higher than similarly powered LF loudspeaker systems with identical cone drivers
C. Drops off rapidly 1/2 octave below its resonant frequency
D. All of the above

 
4.) A W-bin is a well-known type of:
A. Folded horn design
B. Sub¬bass system produced by Martin Audio
C. LF loudspeaker design used only for permanent installations
D. Drum-fill/subwoofer system first developed for drummer John Bonham (Led Zeppelin)

 
5.) High acoustical impedance is applied to an LF horn’s throat so that:
A. High frequency output is band-passed
B. Amplifier impedance is lessened
C. Less driver excursion is required to produce high SPL
D. None of the above

6.) Which of the following was a ported (vented) LF horn design?
A. Altec 816
B. JBL Berkins Bin
C. Community Leviathon
D. Cerwin-Vega TurfShaker

 
7.) As an LF loudspeaker’s frequencies rise, its cone’s directional pattern will:
A. Begin to cancel its own output
B. Narrow sharply
C. No longer be measurable
D. All of the above

 
8.) The unique design technology of ServoDrive was:
A. A belt-driven transducer system
B. Coupling of exponential horns.
C. Reciprocating hydraulically controlled transducers
D. None of the above

  
9.) Extended Low Frequency (ELF) technology was devised by:
A. Gene Czerwinksi
B. Al Berkins
C. Tom Danley
D. Ron Wickersham and Ed Long

 
10.) The first commercially available directional subwoofer was the:
A. Meyer PSW-6
B. Electo-Voice Cardioid One
C. ServoDrive BassTech-7
D. None of the above

  
Thanks for playing. Be sure to let us know how you scored in the comments!

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