1.888.955.6000
crutchfield.com
Crutchfield

Autosound 2000 Disc Four

Amplifier Optimizer Test CD

Zoom
  • Autosound 2000 Disc Four

    Front

Crutchfield OMC logo
We don't check this item for fit or compatibility.
Item #: 503CD104
 

Review Summary

Out of Stock
 
Ship date unknown
Contact us
 
Reserve yours risk-free
Call   Email  
 
Email me when available
 
 
 
Free
Your price $9.99
 
 
Add to cart
 
 
 
 

Our take on the Autosound 2000 Disc Four

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 Four is billed as the Ultimate Amplifier Level Setting Disc. The name says it all.

Please call a Sales Advisor for a complete track listing. You save about $10 when you buy the 5-disc set.

See more info on this item

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

  • CD 4: Setting Amplifier Levels
  • How-to-use information booklet

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Disc 4: Setting Amplifier Levels

  • Track 1: Sample from Sheffield lab's "Sonic Detour" by Freeway Philharmonic, serves as an audio reference

Tracks 2-6 demonstrate the subjective increase in loudness that can be obtained by providing a specified amount of "gain overlap" at the power amp of an audio system. Although gain overlap can increase the usable loudness of a system, it is a compromise. For every dB of increased loudness, there is an equal decrease in the signal-to-noise ratio at lower listening levels. There is also an increase in peak distortion at high listening levels. Good system performance is a result of optimizing the trade-offs:

  • 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: 40 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
 
Review this product
Great Gear Giveaway rewards card

Submit a review and then enter to win a $500 rewards card

Autosound 2000 Disc Four Reviews

Average Customer Review:

8 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
5 out of 5

Great Product from Crutchfield

Written By AJ, Chicago, IL on Friday, May 09, 2014
Crutchfield Customer Review (What's this?)
 
Great amazing CD to test and enjoy your car amplifier.
Was this review helpful?    Yes | No
 
5 out of 5

test tone cd

Written By rich, mn on Saturday, November 09, 2013
Crutchfield Customer Review (What's this?)
 
To say the truth I haven't used it yet.
Pros:
This has every test tone I'll ever us/need in life. A excellent CD to own
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Autosound 2000 disc 104

Written By Anonymous, GA on Thursday, September 26, 2013
Crutchfield Customer Review (What's this?)
 
Very good to tune audio systems.
Pros:
The different output levels are good for getting the most out of the amps.
Cons:
none
Was this review helpful?    Yes | No
 
5 out of 5

Autosound 2000 Disc Four

Written By TBSS, Monument, CO on Monday, August 12, 2013
Crutchfield Customer Review (What's this?)
 
Very handy for setting amp gains with overlap. Examples tracks are useful in choosing a gain overlap level that suits your tastes. Instructions are included so usage should be clear.
Pros:
Sufficient frequency tracks for sub and 3-way front stage amp channel setup. Helpful demo tracks of various gain overlaps to hear/understand added distortion.
Cons:
None.
Was this review helpful?    Yes | No
 
4 out of 5

Test disc

Written By Amp, Dacula ga on Wednesday, August 07, 2013
Crutchfield Customer Review (What's this?)
 
It great for tuning my system
Was this review helpful?    Yes | No
 
5 out of 5

Autosound 2000 Disc Four

Written By Anonymous, Kingsport, TN on Sunday, April 07, 2013
Crutchfield Customer Review (What's this?)
 
Great CD for setting up amp!!
Was this review helpful?    Yes | No
 
3 out of 5

Umm

Written By Anonymous, Searcy, AR on Tuesday, March 12, 2013
Crutchfield Customer Review (What's this?)
 
Don't see the use but I guess it works. Don't really see the need of it though
Was this review helpful?    Yes | No
 
3 out of 5

Autosound 2000 Disc Four

Written By Anonymous, Colorado on Tuesday, June 05, 2012
Crutchfield Customer Review (What's this?)
 
I should not have purchased this. I do not see how I can use it. It is a CD of music. Which if you knew what to do it may be useful. There are no instructions on what to do with it.
Cons:
No instructions
6 out of 14 people found this helpful
Was this review helpful?    Yes | No
 

For a more in-depth review and enhanced detailed information on the Autosound 2000 Disc Four, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_503CD104/Autosound-2000-Disc-Four.html ).

Searches related to the Autosound 2000 Disc Four Amplifier Optimizer Test CD