Acoustic Energy Aego and headphones- no sound

[branskyj]

Hi all,
a while ago I bought the Acoustic Energy Aego M 2.1 (great speakers) and they still work perfectly when plugged into my PC.
My only problem is that I cannot make my headphones work with them- if I plugged the headphones into the 3.5mm jack on the sub- woofer there would not be any sound coming out of them.
My headphones are working perfectly when used with other devices or even when plugged into the PC but since my sound card is at the back and is inconvenient to me to duck all the time I wanted to be able to connect them directly to the sub-woofer.
Is that the purpose of the 3.5mm jack on it or is it for something else? Is there any whay I can use my headphones when plugged into the speakers?

Here is a link with the specifications of the speakers:
http://www.acoustic-energy.co.uk/Default.aspx?pagename=Aego-M-loudspeaker

Thanks for any help.

 

[mshan]

Two quick thoughts:

1) do you have volume control turned down (presumably wouldn't affect line level output level)

2) are your headphones insensitive or hard to drive by the presumed cheap op-amp in headphone circuit?

 

[branskyj]

Hi,
the volume is fine- with headphones plugged into the sub-woofer there is no sound, as soon as I unplug them I can hear the sound.
I am not sure I understand the second thought- my headphones are Grado SR80, they costed me quite a lot when I bought them

Thanks for the help.

 

[mshan]

Grado SR80 are easy to drive (sensitivity, impedance), so the integrated headphone amplifier (op-amp chip) should probably be sufficient to drive headphones to high levels.

And just to be clear, you have to plug headphones into headphone output. The line level output on back of speakers are probably not sufficient to drive headphones.



edit: tech specs in your link says that jack is a mini-jack input, not an output. Looks like there is no headphone output on those speakers.

 

[sdifox]

the jack is an input... not output. says so right on the webpage you linked, under spec.

Just get an audio switch.

 

[branskyj]

Aha, mystery solved. That explains everything.
Thanks a lot, sdifox.

 

[sdifox]

Aha, mystery solved. That explains everything.
Thanks a lot, sdifox.

I am expert at plugging things into places it shouldn't be plugged into :whiste: