My Mechanic's Car Audio

1st January 2004 - report written and upload

True event circle around middle 2002

Mid Flip Phase - Left

A test will be conducted to check if the wires' phase are at their optimum.

Again one can see very clearly the difference between wiring the respective speaker's polarity properly in reference to the type of crossover used is extremely important and produce significant difference.

Some times it is not necessary the mid, but may be the woofer or tweeter. Textbook rules will need to be referenced in this case or practical measurement taken as quicker means to assess the situation.

There are simply too many filter family and hence too many variation of rules to remember. One is best to understand the scenario and apply the necessary precautions and practical measurement checking thereafter.


  1. My Mechanic's Car Audio
  2. Before Filtering
  3. After Filtering
  4. All Loudspeaker Sum
  5. Active Filter's Combined Phase Response
  6. Kicker Sonic Woofer 12" Square
  7. DLS 6.5" Midrange model MS6 from Component Set
  8. DLS Tweeter from Component Set with Mid model MS6
  9. DLS Tweeter High Pass Example
  10. Right Real
  11. Right Real smoothed at 1-3 octave
  12. Right Real smoothed at 1-6 octave
  13. 1-6 octave versus 1-3 octave
  14. Mid Flip Phase - Right
  15. Mid Flip Phase - Left
  16. Woofer in Car
  17. Bad Passive 1
  18. Bad Passive 2
  19. Right Mid only example
  20. The end - Aftermath


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