My Mechanic's Car Audio

1st January 2004 - report written and upload

True event circle around middle 2002

The end - Aftermath

After all this investigation are made. Setting the system is very easy now. All speakers were previously installed correctly and in their effective location and angles. All signaling is also good, except require re-routing a little. All passive were discarded. EQ left flat untouched.

Signal gains were set to match each other by machine and by listening to various music. A little small touch on level gains here and there and it is complete.

Ah Leong's feedback was he

  1. could hear sounds / instruments / voices previously not

  2. soundstage in high up dash

  3. mid like disappeared but have bass up front

  4. cannot tell woofer's bass direction most of the time

  5. signer appears in the middle some times but a little too high on the rear view mirror

He tried to adjust the EQ in hope to get better sound. I advice him caution. My preference and study indicates that it should not be EQed. However since he already have one therefore why not try it. If it is good, please let me know.

The best part is: - A week later Ah Leong told me that all attempts to use the EQ to be better sound failed. There is always too much of something or too little of something. Worst is the sound quality became harsh after EQ.

As I advice, his system is of so high standard that he does not need to EQ it. The tweeter in this case plays the most important role. Which is: -

  1. could hear sounds / instruments / voices previously not

  2. soundstage in high up dash

  3. mid like disappeared but have bass up front

  4. cannot tell woofer's bass direction most of the time

  5. signer appears in the middle some times but a little too high on the rear view mirror

hehehe, it's a repeat of the above..... I know. 

Allot of people doesn't realise the importance of tweeter. 

Finally the Audio Control EQL was sold and he bought another 4 channel amp to drive the mids and highs in hope to get better sound quality.

The improvement is subjective in this case.

It is not a perfect sound, it has significant lacking on music / songs on very high frequency. On most part it is an extremely excellent system. An true all rounder. Thanks to Flat Frequency Response.

Finally a match with Jwo Shong's Car Audio is that this system is far more smoother and friendlier. However lacking somewhat in the very high.

From Jwo Shong's Car Audio stand point. If it wasn't because the tweeter could play relatively flat all the way to 20kHz. Jwo Shong's Car Audio would have lost on all grounds.

So, always give and take. Balance of nature.

So, when can I find my perfect tweeter..............................................

 

  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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