OK GUYS..I have finally solved the problem..This sound low problem is only with the EUROPEAN and ASIAN shipped ipads as they are set to low levels due to country regulations..Here in INDIA its the same as EUROPE...The US ipads are loud as there is no sound restriction by GOVT. So this only works for ipads sold outside US. and it really works! My iPad 2 [India] is double in sound now through the heaphones
Note: No changes in speaker volume..Only Headphones or internal.
The solution to this problem is :-
Step 1)- The first thing you have to do is Jailbreak your iPhone, iPod Touch or iPad. If you have not done this already there are many how to guides you can find around
Step 2) - Next you are going to need to install the following Cydia tweak to your iPhone, iPod Touch or iPad:
Step 3) - open iFile. When you open iFile you should see a screen like this:
Step 4) - With iFile open click on var in the top left corner, then click /
You are now in the root folder.
Click System then Library then PrivateFrameworks and then Celestial.framework.
Browse for the RegionalVolumeLimits.plist file and click on it. Upon click on the blue arrow and set the permission to 777
Now clicking the file you should be presented with the options depicted below.
Step 5) - Click on Property List Viewer. Upon doing so you now have all of the volume settings for your iPhone, iPod Touch or iPad in front of you.
Change all the values in this file as shown above from 0,83 to 25. Which means setting the volume limit from 83% to 125%.
UPDATE: For ios 5+ its -
For those of you that are running ios 6.0 or 6.01 :- its now under /system/library/frameworks/med*iatoolbox.framework