Caco Knowledge Test

61 Questions | Total Attempts: 162

SettingsSettingsSettings
Please wait...
Caco Knowledge Test

Questions and Answers
  • 1. 
    which of the follow are all parts of a subwoofer?
    • A. 

      Coil, wiring, capacitor, steel, surround

    • B. 

      Big plain, little plate, coil, glue, spider

    • C. 

      Cone, coil, pole, back plate, tinsel lead

    • D. 

      Cone, coil, spider, port, back plate, top plate

  • 2. 
    which is more important for a voice coil fitment in a motor
    • A. 

      Tighter to the top plates gap

    • B. 

      Tighter to the pole

  • 3. 
    what is BL curve
    • A. 

      Saturation in the gap

    • B. 

      Inductance of the coil

    • C. 

      Motor force B x L

    • D. 

      BL of a woofer over an excursion range

  • 4. 
    there are ________ cubic inches in a cubic foot
  • 5. 
    which of the follow are functions of a pole vent
    • A. 

      Circulate air to cool the coil

    • B. 

      Increase motor BL

    • C. 

      Let the smell come out if the coil gets hot

    • D. 

      Relieve pressure under the dust cap

  • 6. 
    which voice coil has a tighter pack of wire windings
    • A. 

      4'' 4 layer flat wire aluminum

    • B. 

      3" 4 layer round wire copper

  • 7. 
    adding an aluminum faraday ring to the pole piece can (2 answers)
    • A. 

      Decrease effective voice coil inductance

    • B. 

      Help remove heat from the former

    • C. 

      Lower the impedance of the coil

    • D. 

      Lower thermal handling of the coil

  • 8. 
    voice coils have a "slit" in the former only to adjust the diameter when winding the coil
    • A. 

      True

    • B. 

      False

  • 9. 
    different cone materials experience different resonant frequencies
    • A. 

      True

    • B. 

      False

  • 10. 
    the cone area of a 4 12" subs is 48"
    • A. 

      True

    • B. 

      False

  • 11. 
    if a voice coil is centered in a subwoofer gap (middle of coil in the middle of the top plate) what is it considered
    • A. 

      Underhung

    • B. 

      Overhung

  • 12. 
    making an existing port in a vented enclosure longer will raise the tuning
    • A. 

      True

    • B. 

      False

  • 13. 
    bigger enclosures allow subwoofers to better handle power mechanically
    • A. 

      True

    • B. 

      False

  • 14. 
    what options are there to wire two dual 2 ohm subwoofers
    • A. 

      2 ohm

    • B. 

      .5 ohm

    • C. 

      4 ohm

    • D. 

      8 ohm

  • 15. 
    a 4" 4 layer copper coil will weigh the same as a 4" 4 layer aluminum coil
    • A. 

      True

    • B. 

      False

  • 16. 
    which of the following occur when a power wire is shortened from 20 feet down to 10 feet
    • A. 

      The wire gets warmer when used

    • B. 

      Voltage drop lessens

    • C. 

      Current capacity increases

    • D. 

      Current capacity remains the same as the previous length

  • 17. 
    the current coming from an amplifier is direct current
    • A. 

      False

    • B. 

      True

  • 18. 
    where is a subwoofers air gap located on the motor
    • A. 

      Inside the pole vent

    • B. 

      From back plate to top plate

    • C. 

      On top of the top plate

    • D. 

      Between the top plate and pole piece

  • 19. 
    an alternator turns mechanical energy into AC which is then turned into DC
    • A. 

      False

    • B. 

      True

  • 20. 
    what does an ammeter measure
    • A. 

      Voltage over distance

    • B. 

      Current sag

    • C. 

      Amperage

    • D. 

      Power usage

  • 21. 
    what does an attenuator do
    • A. 

      Pick up radio signal

    • B. 

      Turn on the remote wire signal

    • C. 

      Decrease or increase the strength of a signal

    • D. 

      Nothing at all

  • 22. 
    magnetic flux in the gap, measured in Tesla-meters, is represented by "B"
    • A. 

      True

    • B. 

      False

  • 23. 
    if a subwoofer enclosure has a "double baffle" it means which of the following
    • A. 

      The port is reinforced

    • B. 

      The box is double the thickness all round

    • C. 

      The enclosure has bracing

    • D. 

      The side that holds the subwoofer is double the nominal thickness of the rest of the box

  • 24. 
    which of the follow is a 4th order
    • A. 

      Ported chamber inside of a larger ported chamber

    • B. 

      A ported chamber sealed in a sealed box

    • C. 

      Sealed chamber inside of a ported chamber

    • D. 

      One sealed chamber

  • 25. 
    two 12v batteries wired in series will equal 16v
    • A. 

      True

    • B. 

      False