Go Back   Home > Forums > Blogs > panson_hk

Rate this Entry

LME49810 300 W amp kit from TaoBao (Test)

Posted 5th September 2011 at 10:17 PM by panson_hk

The board is ready for test. The bias level is adjusted via monitoring the THD level as well as the distortion residual.

THD vs power for 20 Hz, 1 k and 20 k for 8 Ohm are shown in the figure. It is so high compared to all my 498xx amps. For 1 k, we should have THD lower than 0.0008 %.

Let test the THD vs power without load. Without load connected, output stage contributes very little distortion. This can be used to check whether the 49810 functions as spec or not.
Attached Thumbnails
Click image for larger version

Name:	THD vs power 1k 20k 20Hz 8Ohm.jpg
Views:	1358
Size:	175.3 KB
ID:	482  
Posted in Uncategorized
Views 2226 Comments 0
Total Comments 0

Comments

 

New To Site? Need Help?
Copyright 1999-2017 diyAudio