Amplifying a signal comming out from an aux port

[Ezekiel7O]

Hey first of all sorry for my english its not my native language , anyway i was playing with some 2 old passive speakers and just for fun i cutted the wires and connected them to an aux wire, it worked pretty well but the probleme the sound is low , not really much but it doesnt show the capability of the speakers, it's obvious that the voltage isnt enough to reach a decent volume (aux port voltage is approximately 2v) so for the speakers to work fine i concluded that i need to amplify the voltage, i thought about using an op amp but i have no idea how to start and wich one to use, and how to supply the op amp with negative voltage using dc , any help will be really appreciated thank you .

 

[Bluejets]

Aux out is meant to go to an amp or pre-amp.
Maybe buy one on Ebay, plenty to choose from at much lower cost that even thinking about building.

 

[WHONOES]

Hey first of all sorry for my english its not my native language , anyway i was playing with some 2 old passive speakers and just for fun i cutted the wires and connected them to an aux wire, it worked pretty well but the probleme the sound is low , not really much but it doesnt show the capability of the speakers, it's obvious that the voltage isnt enough to reach a decent volume (aux port voltage is approximately 2v) so for the speakers to work fine i concluded that i need to amplify the voltage, i thought about using an op amp but i have no idea how to start and wich one to use, and how to supply the op amp with negative voltage using dc , any help will be really appreciated thank you .

If as you say, you are getting 2V from your Aux output (how do you know that?) then you will need a small power amp to drive your speaker. You will need substantially more current to drive the speaker that the few milliamps that come from Aux out or another opamp.

 

[Ezekiel7O]

If as you say, you are getting 2V from your Aux output (how do you know that?) then you will need a small power amp to drive your speaker. You will need substantially more current to drive the speaker that the few milliamps that come from Aux out or another opamp.

I just searched on the net and i found that aux port's phone voltage is 1v-2v

 

[WHONOES]

A small power amplifier seems to be all that you need. How far do your electronics skills extend?

 

[Ezekiel7O]

A small power amplifier seems to be all that you need. How far do your electronics skills extend?

This is my second year studying electronic so i m not really bad, i just need some help,thank you in advance for giving me from your time good sir really appreciated.

 

[WHONOES]

Do you think you can build a small amplifier as a project?
You will need to make a simple power supply as well. If so, we will tackle it one step at a time.

 

[Ezekiel7O]

That s will be great sir , what do i have to start with ?

 

[WHONOES]

What access do you have to electronics components in Morocco?