Hi there, I'm new to forum and I love it. There is alot of great info here. However, I have one question I hope some of you can help me out with.
I'm building a guitar amp out of a TDA1517 that I pulled from an old sound card. I have it all working just fine, however, I would like to bridge the two outputs to one mono output and I just want to make sure I'm doing it right. So far all I have is the standard schematic build taken from the TDA1517 datasheet. I'll add a preamp and all the tonal goodies after I have everything right with the chip.
Thanks!!
Wade
I'm building a guitar amp out of a TDA1517 that I pulled from an old sound card. I have it all working just fine, however, I would like to bridge the two outputs to one mono output and I just want to make sure I'm doing it right. So far all I have is the standard schematic build taken from the TDA1517 datasheet. I'll add a preamp and all the tonal goodies after I have everything right with the chip.
Thanks!!
Wade
You can copy the output conenction from the TDA1519A's datasheet page 9. The inputs remain the same, but one of them, e. g. will be connected to ground.
tda1517
it is highly unlikely that u can bridge this amplifier since in order to successfully bridge an amp u must be able to shift the input 180 degrees out of phase from each other. and according to the data sheet only the non inverting inputs are given.. the only way is if u use an inverting pre amp on one of the inputs.
it is highly unlikely that u can bridge this amplifier since in order to successfully bridge an amp u must be able to shift the input 180 degrees out of phase from each other. and according to the data sheet only the non inverting inputs are given.. the only way is if u use an inverting pre amp on one of the inputs.
If you had read the datasheet you would've noticed it CAN be bridged, because they give the inverting input on one of the channels and the noninverting input on the other. 🙂 While in stereo mode, one of the speakers is simply wired the other way round to keep correct phase.
This is true on the 1519A, but NOT on the 1517. The 1517's inputs are non inverting on both channels. He would need an inverting buffer on one of the channels.
Also, when bridging the 1517, you have to use 8 Ohm loads due to the current limit. Okay for 4 Ohms if Vs less than 12 volts.
Funny - the datasheet i opened yesterday said it's bridgeable from the first page. Now i can't find that particular one... I guess it was a typo on my part and i actually opened the datasheet of something else, sorry. The 1517 does indeed have only noninverting inputs available to the outside world.
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