AutoSound 2000 CD-104 (CD104)

• The Ultimate Amplifier Level Setting Disc, for Critical Evaluation of Audio Components
• The ultimate test disc for determining the audible level of distortion in an audio system
• Uses specialized tracks to set up your system for maximum sound and minimum system hiss
• No special equipment is needed
• The tracks will indicate the specific amount of gain overlap (clipping), average distortion, and the relative loudness present in your system
• Other tracks on cd#104 will permit optimal component adjustments of the signal level to maintain optimal system performance
• 30-day Manufacturer warranty

Tracks 2-6 demonstrate the subjective increase in loudness that can be obtained by providing a specified amount of gain overlapping at the amplifier of an audio system.

• Track 2: Demonstrates 0 dB of gain overlap
• Track 3: Demonstrates 5 dB of gain overlap
• Track 4: Demonstrates 10 dB of gain overlap
• Track 5: Demonstrates 15 dB of gain overlap
• Track 6: Demonstrates 20 dB of gain overlap

Tracks 7-12 are used for setting the max level (clipping threshold) of electronic components

• Track 7: 50 Hz @ 0dBFS useful for adjusting subwoofer crossover)
• Track 8: 100Hz @ 0dBFS useful for setting midbass of an electronic crossover
• Track 9: 400Hz @ 0dBFS useful for x-over setting at this frequency
• Track 10: 1kHz @ 0dBFS used to set x-over midrange output
• Track 11: 4kHz @ 0dBFS useful to set tweeter output of an electronic crossover
• Track 12: 8kHz @ 0dBFS useful to set tweeter output of an electronic crossover

Tracks 13-18 are used to obtain 5 dB of gain overlap

• Track 13: 40 Hz @ -5 dBFS
• Track 14: 100 Hz @ -5 dBFS
• Track 15: 400 Hz @ -5 dBFS
• Track 16: 1 kHz @ -5 dBFS
• Track 17: 4 kHz @ -5 dBFS
• Track 18: 8 kHz @ -5 dBFS

Tracks 19-24 are used to obtain 10 dB of gain overlap

• Track 19: 40 Hz @ -10 dBFS
• Track 20: 100 Hz @ -10 dBFS
• Track 21: 400 Hz @ -10 dBFS
• Track 22: 1 kHz @ -10 dBFS
• Track 23: 4 kHz @ -10 dBFS
• Track 24: 8 kHz @ -10 dBFS

Tracks 25-30 are used to obtain 15 dB of gain overlap

• Track 25: 40 Hz @ -15 dBFS
• Track 26: 100 Hz @ -15 dBFS
• Track 27: 400 Hz @ -15 dBFS
• Track 28: 1 kHz @ -15 dBFS
• Track 29: 4 kHz @ -15 dBFS
• Track 30: 8 kHz @ -15 dBFS

Tracks 31-35 are the same as tracks 2-6. However, the levels of these tracks have been adjusted to compensate for the loudness increase

• Track 31: Reference track with 0 dB gain overlap
• Track 32: 5 dB of gain overlap w/recording level lowered 4.9dB
• Track 33: 10 dB of gain overlap w/recording level lowered 9.4 dB
• Track 34: 15 dB of gain overlap w/recording level lowered 13.3 dB
• Track 35: 20 dB of gain overlap w/recording level lowered 16.2 dB