Amps, Speakers, and power supplies?



Asked by: Scott Johnson

Do you need a power amp for powered speakers?





Powered speakers do not need an amplifier. They have an amplifier already installed in them which is why they are called ‘powered speakers’ to begin with. What is this? Depending on the speakers’ input options, you can hook them up to different audio sources without the need for a separate amplifier.

What does a power supply do in an amplifier?

If a receiver’s power supply has sufficient current supplying capacity, and the amplifiers output impedance is low enough, then it can operate fairly closely to an ideal voltage source doubling available output power as the load impedance halves and the voltage output remains the same.

Do speakers need power supply?

Active loudspeakers have built-in amplifiers and require a power source. Loudspeakers are available in two formats: active and passive. Active loudspeakers have a built-in amplifier that is appropriately powered and matched to the speakers’ driver units.

Does power supply affect sound quality?

It depends entirely on what the external Linear PSU is being used to power. Even the type of filter capacitors used in this area can still affect the resulting sound AFTER going through a voltage regulator.

Do powered speakers need a preamp?





Most powered speakers still require a separate phono pre-amp. In any case, internal amplification and the built-in phono pre-amp eliminate the need for two separate components – a receiver and discrete phono pre-amp.

How do you match speakers to an amplifier?

And so that brings me to the second rule of thumb match your speaker's ohms to the ohms that your amp can handle now amps are generally designed to work with 4 8 and 16 ohm speakers.

How do I choose a power supply for my amp?

The manual specifies 12V as the operating voltage for the amplifier, so the power supply should be rated at a fixed 12V (regulated) and the current is immaterial and could be anything higher than 10amps upto infinity. The speaker power should be preferably rated higher than the max wattage rating of the amplifier.

How do I know what size amp I need?

Amps = Watts / Volts



Examples: 4160 Watts / 208 Volts = 20 Amps. 3600 Watts / 240 Volts = 15 Amps.

What voltage goes to speakers?

In Canada and the US, they are most commonly referred to as 70-volt speakers. In Europe, the 100 V system is the most widespread, with amplifier and speaker products being simply labeled with 100 V.



Do linear power supplies improve sound?

Like this one. And a linear power supply like the geeslers. Both in terms of their design their size their benefits their drawbacks. But also the sound quality improvements you can potentially.

Do power cables affect sound?

I saw no difference absolutely no difference the distortion was the same out of the amplifier. The noise floor was the same out of the amplifier. In fact. The only time a few if you think your power

Do linear power supplies make a difference?

The practical difference is that a linear power supply converts power to heat where a switch-mode PSU doesn’t (much). A linear power supply tends to carry mains noise; a switch-mode creates its own noise, albeit at much higher frequencies – debatably easier to filter.



What are the 2 drawbacks of linear power supply?

In summary, the disadvantages of linear power supplies are higher heat loss, a larger size, and being less efficient in comparison to the SMPS. The primary issue attributed to the linear power supply’s inadequacy in high-power applications is its size and weight.

Which is better linear or switching power supply?

Switching power supplies are more efficient because linear power supplies release more energy as heat. The output of the switching power supply is controlled by the control circuit. Linear power supplies, on the other hand, are controlled by the response of the regulator circuit.

Why is it called a linear power supply?

Linear regulated power supplies gain their name from the fact that they use linear, i.e. non-switching techniques to regulate the voltage output from the power supply. The term linear power supply implies that the power supply is regulated to provide the correct voltage at the output.

What are the 3 types of power supply?

There are three subsets of regulated power supplies: linear, switched, and battery-based. Of the three basic regulated power supply designs, linear is the least complicated system, but switched and battery power have their advantages.



What are the advantages and disadvantages of a linear power supply?

Linear mode power supplies offer many advantages such as a simple design and overall low cost while also having disadvantages like high heat loss and varied, low efficiency levels.