Minijack sound difference

I've noticed that whenever I plug in an external audio device into the minijack, the sound changes. I found this evident by a slight delay between plugging it in and the change of sound. It sounds like a filter is applied to "protect" or maybe improve the laptop speakers. I know my dv4 drops most frequencies below 100hz when playing through the built in speakers to make it more efficient.

I've been trying to fight a problem with my new dv7 in which all of my sound through the built-in speakers sounds heavily compressed. Loud sounds (especially treble) are drawn back and it just sounds terrible. I do not have the problem through external devices, however.

Does anyone know what is responsible for this sound change and if I can disable it? Is it a Windows feature, or perhaps an IDT feature? Bios?
All I know is that I want it gone!

Thanks in advance.

 

Try poking around in the Sound control panel and disable all the enhancements in the Speakers and Headphones device, and see what that does to help, if anything.

 

I have a feeling the problem here are "rubbish speakers" in laptops that generally sound like the cheapest earbuds you can find...

And if you ever plug in different speakers, you should find that they will also always sound slightly different - just because they'll all be balanced ever so slightly differently - My guess is though, that this decreases with professional speakers - say for audio production.
-> but basically, on a consumer level, any product will sound slightly different.

 

Thanks for the replies.

Blaze-Senpai: The enhancements were the first things I checked. Unfortunately, they were not responsible for compressing the sound.

DetlevCM: Yah, laptop speakers will never sound as good as a decent set of headphones. But because I don't like wearing headphones for too long, and I'm rarely at my desk, I very frequently find myself listening to music through the built-in speakers.

It's not a matter of sounding different, necessarily. It's only that something is compressing the sound, which is a definite no for sound quality.
Nothing through the minijack is compressed though, so I'm hoping someone can point me in the right direction as to what is causing this so I can disable it.

 

It's just tiny speakers - that's why.

The internal speakers tend to get the same audio input as the minijack - so no compression there. They might be subject to a high pass filter - but that's it.