Help! My system is very bright it hurts my ear

... didn't see anything about how far away from the speakers you are listening... are speakers tilted in/focused on listener?... are speakers level or tilted up/down?, and level side to side? is this brightness when you are sitting ( what is your ear height in relation to the tweeter height?), standing, moving around in the room - or at all times? When sitting - is there anything behind you or is it open?... I don't think your problem is an equipment issue (except for the weirdness of the bi-amping with your speakers) since you've done some swap-outs...

... and just HOW did you end up with this Hodge-Podge of endless equipment?

Fatgosil, did you say your room is 20' X 60' with 20' ceilings and bare walls and floors?  Wow--your room is an echo chamber.  Can you partition off a smaller listening area?  

i had the same problem in my room , what helped with my bass and less harshness was to not hook up the speakers to the highs , or by amp , but to use the bottom terminals 

Hello fatgosil,

You are on the right track by using two amps. You do need to make sure that all the system is connected and working. We can help you
but first we need to know a couple of important answers. I have seen the questions but am not sure if you gave answers to all of them. 1) Did you hook this up yourself? 2) Did you remove the connection bars that connect the woofer to the mid, tweeter for single amp use. 3) The amps need to put out the same power with the same input. The Aragon puts out 1W for .12 v and 200W for 1.7 V. I could not find the GA SE40 spec for this. Do you have this info and can you tell us? The reviews of the Quad 22L2 say that it is a little base shy.This gives a more detailed and brighter sound. If the GA amp can deliver let's say 2W for the same input then your mid, tweeter will be playing 3db louder than the woofer. This will make the speaker sound even brighter. The GA amp is single ended and as such it is easy to overload. It has problems below 100Hz and 2-3k (your speaker X-overs) It could be having problems with the load. It only puts out 15W in the mid and 7W in the low end. This can be fixed! 3) Did you put back the bars when you tested the single amps. And did you still hear the bright sound with both amps. Please let us know how you are doing.  We can work together a step at a time to  solve your problem. I do not think that you need to change anything in you system. Just make some adjustments.  My Best