Hi Thanks for reading.
So my sold my old car but kept my beloved amp, and am using it at home powered by a simple power supply that i built consisting of a transformer+ rectifier+smoothing capacitors. Looking at the car amp, it is taking the 12 volts from the car battery and converting it into +/- 35 volts.
Does the amp care about the 12 volts psu if it is clean, or can it be noisy. Would lowering the power supply noise improve sound quality
So my sold my old car but kept my beloved amp, and am using it at home powered by a simple power supply that i built consisting of a transformer+ rectifier+smoothing capacitors. Looking at the car amp, it is taking the 12 volts from the car battery and converting it into +/- 35 volts.
Does the amp care about the 12 volts psu if it is clean, or can it be noisy. Would lowering the power supply noise improve sound quality
Provided your power supply is capable of supplying the maximum required current, I should think a well smoothed, full wave rectified power supply of 12 V would be sufficient.
Thanks! What i meant was the amp takes the 12volts from the battery, turns it into AC, then into +/- 35v DC
So does the amount of noise on the 12 volts supply matter, as it will be turned into AC
So does the amount of noise on the 12 volts supply matter, as it will be turned into AC
I did consider that, and concluded that the voltage conversion would either eliminate any noise in the 12 V supply or introduce fresh artifacts of its own.
Impossible to tell without measurement, where perhaps an oscilloscope would come in handy.
If you are happy with the sound quality of your amp, then don't let this unproven issue worry you.
Impossible to tell without measurement, where perhaps an oscilloscope would come in handy.
If you are happy with the sound quality of your amp, then don't let this unproven issue worry you.
If you have access to more cheap capacitors, you could try doubling up on the caps (for half the ripple) to see if you could hear the difference.
Good point. I did use bigger caps but the smps kept shutting down. I dropped the caps down to 3300uf and the smps works fine now
You need to increase the soft start time (of the 12V>35V SMPS) if you want to use higher output capacity and the power supply don't like.
And thinking about car audio in general, it gets better powered on close to 14V rather than 12V. Maybe you have an SMPS that can be adjusted upward a bit?