Electronics is not my thing so bear with me . . .
I have a stereo TPA3116D2. My transformer puts out 11v*2/ 1.2 amps. (I am going to assume that's 1.2 amps per winding. How many DC volts is that after the bridge rectifier?
My speakers are 6 ohms. How many watts will I end up with?
I have a stereo TPA3116D2. My transformer puts out 11v*2/ 1.2 amps. (I am going to assume that's 1.2 amps per winding. How many DC volts is that after the bridge rectifier?
My speakers are 6 ohms. How many watts will I end up with?
If you parallel the windings for 2.4A, then (11VAC x 1.414 - 2x 0.6V) = 14VDC. Vrms = (14V/2.828) = 5Vrms.
Power = (5V x 5V / 6R) ~ 4W and has enough secondary current available for full power.
If you series the windings for 1.2A, (22VAC x 1.414 - 2 x 0.6V) = 30VDC. Vrms = (30V / 2.828) = 10.6 Vrms.
Power = (10.6V x 10.6V / 6R) = 19W but the secondary current is too limited for full power, limited to around 8W.
Power = (5V x 5V / 6R) ~ 4W and has enough secondary current available for full power.
If you series the windings for 1.2A, (22VAC x 1.414 - 2 x 0.6V) = 30VDC. Vrms = (30V / 2.828) = 10.6 Vrms.
Power = (10.6V x 10.6V / 6R) = 19W but the secondary current is too limited for full power, limited to around 8W.
26VA claiming 100W audio could work if we assume a 12dB peak/average ratio. Which is entirely likely for speech/music.
I think those specs outline what you can do. Simple amplifier makes 13W in 8r. Bridge in 8r implies 52W but chip-limits make it 35W. Since you have many channels at these specs, you could rig four amps bridge into two 8r loads and hope for 35W+35W in speech/music peaks, altho much less on sustained test tones.
I think those specs outline what you can do. Simple amplifier makes 13W in 8r. Bridge in 8r implies 52W but chip-limits make it 35W. Since you have many channels at these specs, you could rig four amps bridge into two 8r loads and hope for 35W+35W in speech/music peaks, altho much less on sustained test tones.