ok I found this and it confirmed another members answer, it is the picture almost to the bottom oh and it is in Chinese so turn on translator. BTL ¿É²¢ÁªÇŽÓDIY TDA7492´ó¹¦ÂÊÊý×Ö¹¦·Å°å50*2 100W³¬TA202421-ÌÔ±¦Íø
when the Member emails me back with the final wiring for speaker and input I will post it,and I hope this helps the next person doing this.
when the Member emails me back with the final wiring for speaker and input I will post it,and I hope this helps the next person doing this.
Looking into this amp to use for a boombox but also interested in using it in a wireless monitor for karaoke. I know that the chip is already BTL and to combine the channels I simply make sure the input in the same (mono on both channels) and then tie both positives and negatives to the speaker(s). I know in normal (class ab) bridgeable amps you need to double the impedance to keep each channel at its original output but if I understand correctly in PBTL I want to halve the impedance to get the same output. Example, if amp did 25 wpc into 4 ohms in normal stereo I would have to use a 2 ohm load to achieve 50 watts in PBTL mode. Some versions of this amp being sold are listed to run on as little as 12 volts. I looked at a spec sheet for the chip and their test data graphs only went down to 15 volts. I estimate the amp will only do about 18 wpc at 4 ohms at 12 volts. will the amp run safely like this and I assume that would get me 36 watts in PBTL mode. Lastly, if running in PBTL mode and the inputs were just a stereo pair, what happens if there is no signal on one input and not the other? Thanks
You can synch clocks or make them sufficiently different the beat is inaudible.
I read this in IR datasheet in regards to stereo irs2092 circuit.
- Status
- Not open for further replies.