About the Autosound 2000 Disc One
Autosound 2000 has created this series of test CDs for the professional and the serious hobbyist. Each disc is designed to test a specific performance parameter of your vehicle's audio system.
Disc One contains 99 tracks, many of which focus on bass. You get 20-20,000 Hz sweeps, low frequency bursts, sine waves, and other useful tracks.
Please call a Sales Advisor for a complete track listing. You save about $10 when you buy the 5-disc set.
What's in the box:
- CD 1: Low Frequency Tests
- How-to-use information
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Disc 1: Low Frequency Tests
- Track 1: 1 kHz tone at -20 DB (2:06)
Helps you measure the reference loudness of a component. - Track 2: 1 kHz tone at -20 dB, fades to
black (3:55)
Tests the reproduction quality of a sound system when driven with extremely low level signals. - Track 3: Polarity Pulses (3 positive - 1
negative) (2:00)
To measure relative and absolute polarity. - Track 4: 20-20,000 Hz slow sweep (1:10)
To take response measurements and to check for resonant frequencies. - Track 5: 20-20,000 Hz fast sweep (:19)
- Track 6: Sequential tones 20-20,000 Hz,
twice (1:36)
For use with test instruments that measure sequential tones. - Track 7: Composite tones (2:04)
Used for measurements with swept spectrum analyzers and to determine the overload threshold of a system. - Track 8: 50 Hz square wave with sweep to
20 Hz (2:00)
Used for setting up low-frequency servo systems. - Track 9: Low-frequency bursts (1:27)
Used to evaluate the transient behavior of a subwoofer system. - Tracks 10-98: Sine waves corresponding to
track numbers (:30 each)
The numerical track indicator of the CD player matches with the frequency of the sine wave that is recorded on that track, eg., track 10 = 10Hz. - Track 99: 1 kHz at digital zero (2:36)
Used to test the output headroom of a CD player.
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