Help setting the HPF and LPF on my amp

[xDATx 10+ year member]

You can't set one crossover for channels 1 & 2 and then another for channels 3 & 4? Well, in that case set the amp like I suggested in the first two paragraphs above. Then go to your local audio store and get some inline lowpass crossovers for your mids so they don't get all the frequencies above 2KHz. Also, I'd be careful with the gains going to the factory tweeters. You might look into getting a budget friendly component set or looking on ebay for some aftermarket tweeters. I'm sure you could find something decent for pretty cheap.

which one of these will work, so I my mids don't get frequencies above 2KHz? sorry not to good with this KHz and Hz...lol

http://www.partsexpress.com/webpage.cfm?webpage_id=3&CAT_ID=35&ObjectGroup_ID=745