TDA8950 Class-D BTL Stereo Amplifier Board

I have a TDA8950 Class-D BTL Stereo Amplifier Board from Wholesale Product Snapshot Product name is TDA8950 amplifier board dual AC24V-0-24V 2.0 channel class D NE5532 + UPC1237 + TDA8950 amplifier (with protection) 120W+120W. The board is working fine but I want to use in BTL mode. The board shows three regions with BTL mentioned and I dont know if i am supposed to short them or what. So, how do i get this board to operate in BTL mode? BOTTOM.jpg
 
My tda8950 arrived this week and it works very nice. It is being powered by a 22-0-22 Vac 10A transformer. It came with the BTL markings on the bottom side, and it follows the typical application circuit. The lines have to be shortcircuited and the BTL circle becomes the input, the volume control doesn't work in this mode (at least according to this circuit, if I followed it correctly).
It doesn't have SMD components (besides the ic) so replacing or upgrading things should be easy. It comes with 2 x 3300uF/50V filter capacitors and a KBU1010 bridge rectifier, i'm thinking on upgrading the filter capacitors or removing them at all and use an external power supply with bigger filters.
Right now it drives 1 x 12 inch speakers by side and it sounds nice and loud.
:wave2:
 

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Yuval TS

Member
2017-08-16 9:56 pm
TDA8950 Board balance Input. Bridge BTL / Balance Output

[IMGDEAD]https://drive.google.com/file/d/11-LcDWRhyoG6hgot7tz7ouBgED0eODyO3w/view?usp=sharing[/IMGDEAD]

[IMGDEAD]https://drive.google.com/file/d/1TcShotlDyLP3VEsizH6k0Cm9RXurnzFZaw/view?usp=sharing[/IMGDEAD]

I made this change to get a Mono balance Input & Bridge / BTL Output in the original connection of the board.
And it works great!

**** It's the same board, on both sides
 
Last edited:

Yuval TS

Member
2017-08-16 9:56 pm
[IMGHTTPSDEAD]https://drive.google.com/file/d/11-LcDWRhyoG6hgot7tz7ouBgED0eODyO3w/view?usp=sharing[/IMGHTTPSDEAD]

[IMGHTTPSDEAD]https://drive.google.com/file/d/1TcShotlDyLP3VEsizH6k0Cm9RXurnzFZaw/view?usp=sharing[/IMGHTTPSDEAD]

I made this change to get a Mono balance Input & Bridge / BTL Output in the original connection of the board.
And it works great!

**** It's the same board, on both sides
Right click on the link