Every contestant shall qualify twice; once for SPL and once for RTA.
The contestant's SPL score and RTA score shall be added to the contestant's Installation score to determine the contestant's Overall score.
Placement shall be determined by each contestant's Overall score (SPL score + RTA score + Installation score). The contestant with the highest Overall score wins.
4-1
Sound Pressure Level Score (SPL)
The SPL score in Psychlone is comprised of two parts; Average SPL and Peak Frequency Bonus.
The Average SPL is simply the 30 second average SPL as measured by Term-LAB.
The Peak Frequency Bonus is awarded based upon the frequency where the contestant's highest average SPL occurred. This bonus is determined as follows...
80 Hz = 0 Points
79 Hz = 1 Points
...
20 Hz = 60 Points
Example:
Average SPL = 143 dB
Peak Frequency 35 Hz
Peak Frequency Bonus = 80 - 35 = 45 points
SPL Score = 143 + 45 = 188
The maximum Peak Frequency Bonus is 60 points. The maximum SPL score is currently 253 points (193 dB Max Term-LAB measurement + 60 Bonus points.)
4-2
Frequency Response Score (RTA)
Contestants shall use Pink Noise for the RTA measurement.
The RTA microphone shall be placed in a forward-facing orientation 30 inches (76.2 cm) above the seat on the passenger side of the vehicle.
The output level of the system shall be adjusted until an SPL reading of 90-110 dB is obtained on the Term-LAB RTA analyzer. Contestants will then have 1 minute to adjust their sound system prior to the start of the measurement.
The frequency response score will be calculated from the 30 second average RTA measurement. Adjustments to the sound system are not permitted once the RTA measurement has been started.
The Term-LAB RTA analyzer will identify PRIMARY discontinuities within the frequency response of the system. (Band-to-band deviations in excess of 9 dB.) The primary discontinuity with the highest band-to-band deviation will then be determined. The actual deviation at this location (in dB) will be deducted from the RTA starting score of 100 points.
The Term-LAB RTA analyzer will identify SECONDARY discontinuities within the frequency response of the system. (Band-to-band deviations in excess of 6 dB.) The secondary discontinuity with the highest band-to-band deviation will then be determined. The actual deviation at this location (in dB) will be deducted from the current RTA score.
The Term-LAB RTA analyzer will identify all band-to-band discontinuities exceeding 3 dB (excluding the primary and secondary discontinuities, if any). One point shall be deducted for each of these deviations.
The maximum RTA score is 100 points.
4-3
Installation Score
Ten points shall be added for each of the following...
System diagram or installation documentation (no hand-drawn documents)
5 (or more) band equalizer (integrated or external)
Aftermarket amplifiers, subs, mids, and tweets (all present)
Amplifier power wire(s) fused within 24 inches of the car's battery
Clean or hidden amplifier wiring
Clean or hidden mids and tweets ("stealth" install or custom trim panels)
Cosmetically completed installation (no raw wood, etc.)
All equipment installed securely (permanent installation - no straps, etc.)
In-car video entertainment (Example: video, video game, etc.)
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