| Highest overall score was 6.9 acheived by George Marutz with a system of his own design in a 2004 Trailblazer. George also had the highest tonal score, 4.1. He achieved this by using the rule allowing tuning for best score. The greatest low frequency extension of 16 Hz and the highest low frequency SPL, 118.6 dB was achieved by Kevin McCallum in a system of his own design in a 2004 Impala SS. Third prize was awarded to David Carlstrom for second highest overall score of 5.73. He created a custom equalization for the Boston Acoustics speakers in his 2005 Dodge Magnum for a tonal score of 3.9, bass extension of 32 Hz and low frequency SPL of 110 dB. | ||
| Judging if the contest is objective. Cars are judged solely on PTF (Perceptual Transfer Function) measurements. PTF includes, tone balance frequency response, maximum SPL, maximum bass SPL, and Spatial Rendition. A points system will produce the final score: 5 points Tonal Balance; 5 points Soundstage; 0.1 point/dB for SPL over 100 dB SPL @ 10 % distortion; 0.1 point/dB for 40 to 100 Hz average SPL over 100 dB @ 10 % distortion; 0.1 point per Hz for extension below 40 Hz (-6dB from target). Additional prize categories are maximum bass SPL and best spectral balance. | ||
|
||
|
|
|
| Tom Nousaine's Autosound Speaker Test Sled (2003) | Arny Krueger made a microphone multiplexer and locallized sound power microphone array for an early SMWTMS Autosound Contest. | At an early SMWTMS Autosound Contest Bob Klacza and Mark Schlorff assist the instrumentation expert. |
Send e-mail to SMWTMS: djcarlst@provide.net