Circuit to split an audio signal into two and o/ps should've same level as i/p

[satyaRANJAN]

I have two 2.1 speaker systems and a laptop with one audio o/p jack. I want to connect them so that both the speaker systems play the sound simultaneously.
So I need a circuit that can take i/p from my laptop audio o/p jack and give two o/ps which will have equal strength as the i/p.
Or is there any better idea for this job to be done?

I don't want to use only a Y-splitter as it weakens the signal at its both o/p ends.

Thank you.

 

[barry]

Depending on what your input and output impedances are, you COULD get away with a Y-splitter. Otherwise, you'll need an active splitter. Something like this might work.

**broken link removed**

 

[satyaRANJAN]

Thanks for the post Barry.
But can I use a simple common base bjt ckt as a buffer to prevent any loading to the laptop
and then I split the o/p of the CB ckt?
l think the laptop o/p has got an impedance of around 32 ohms. And the I/p impedance of the
subwoofer system should be quite larger than this.
I have a very little knowledge in analog.

 

[barry]

If the input impedance to your subwoofer system is substantially larger than 32 ohms, you won't need a buffer; you are not drawing very much power from your laptop output.