URGENT W124 Door Speakers help

Dear all.
As some of you might have read some of my threats regarding the stereo problems I am having.

http://www.peachparts.com/shopforum/showthread.phpthreadid=15692

I had took the shop's advises and got an four amp installed yesteday. When i went pick up my car I just went stright down the frustration and depression.
Those people in the store now tells me that my door are blown. I swear those speakers were working fine before I installed the HU. The way that they installed the amp were nasty unprofessional looking. I mean, something that I could have done it myself. Now, the more money I spend,
(600 for the HU , 500 for the amp, 100 to installed) The worst sound I get. Man, this really suck big time. (Sorry, I am really frustrated with the car right now )
Back to the story, I got very frustrated and I refuse to pay, then the store manager came out and after 1hr of talking they said that if I get new door speakers they will replace them for free.
I think I will need to replace the door speakers, Could someone please tell me what are the sizes of the door speakers please. I need the deapth, and sizes so that I could start to look for speakers
Any tips or concerns will help.
Thank you very much for your help

[bobjohnston]

I used Rockford Fosgate 6.75 (I think, check their website, it is the bigger of the two 6 and something inch drivers.) inch mid bass drivers in my 94 E420, but had to replace the wiring because in my car, these were active speakers with small amps in the pods. Sounds great, but needed a lot of power.