- #36
Tesladude said:Ok so would running bridged tda2050 on an 8 ohm speaker give me a noticeable increase in volume?
When I first started all this I was going to use a simple linear power supply to run 2 tda2050s giving me left and right ear at a reasonable volume on an 8 ohm speaker. I tried it, and It didn't seem loud enough for me.
Where you are is you have mis-diagnosed your problem.I wanted to continue useing the tda2050 because of it's simplicity, low voltage, and price.
So, having little experience with bridge, I figured I would just have 2 bridge circuits to give me a lot more power for each ear. I read if you have 100 watts into 4 ohms, then bridge you will have 200 into 8.
If that is so then bridged I will have 60 watts into 8ohms since this chip does 30 watts into 4ohms.
Then came in a suitable power supply for this and unless the bridged plans are changed, then that's where I am with this.
Now from what I think I am hearing up above is that this will not give me more volume?(virtually) And it is not worth the effort?
OK so now that I only have the 2 tda2050, using a switching power supply will make it so I have to set them up for a non-splut power supply, because I won't have the ground, will this lower the loudness at all?
Tesladude said:So sonnet the switching supplies in seriece and use the posotive and negativ connection in the center as ground for a split supply?
What can the max current on these be to run 2 of these chips?
Averagesupernova said:Something here that is worth mentioning concerning doubling power making only a small perceived increase in volume. Just about all speakers from years ago were 8 ohms. 4 ohm speakers came along for automobiles because stock car radios have a limited supply voltage of 12 volts and you won't get much more than 10 volts peak to peak which is about 1.5 watts into 8 ohms. So the solution to get more power out of a low voltage power supply was to drive a lower impedance speaker. Someone thought that it was worth building 4 ohm speakers instead of 8 to get the small perceived difference in loudness.
Tesladude said:Ok thanks, I was looking at prices for power supply and I think I want to try and use single supply circuit with one 10a 24v smps.
This will save me room and money.
http://www.google.com/imgres?imgurl...OJAFUsbkCYHW2AWV5YDwAw&ved=0CD0Q9QEwBA&dur=97
As you said before the 1000uf will cut out everything bellow 40hz, I still want some of that though.
Will changing to 2200 or somthing else cut out a bit less?
jim hardy said:You might need a 40 volt supply if you make it bigger than 1000 uf.
Data Sheet said:C7 can be larger than 1000 μF only if the supply voltage does not
exceed 40 V
Bigger capacitor is no problem below 40 volts.
not to mention he's already built one circuit board for split supply amplifier .If I were doing this I would buy a +-12V supply (or higher) and eliminate the output capacitor.
Also can I combine a left and right audio output and put them both into the posotive of one speaker to get a speaker that is putting out left and right (center speaker) without doing any harm to the amp or anything?