Stock speaker size
#3
This thread says 6.5 door speakers. I don't know for sure.
https://www.chevyhhr.net/forums/audio-video-17/door-speaker-depth-19817/
https://www.chevyhhr.net/forums/audio-video-17/door-speaker-depth-19817/
#5
#8
I have the amplified system and my Polk DB 6.5's mounting holes were just shy of the factory speakers mounting holes. I say this so that you understand that not all speakers of the same stated size will have the same mounting hole diameter. Some 6.75's will be smaller then some 6.5's and then you have some of the 6.5's that may be very small or have only 3 holes. Buy the ones you want and if needed then do a little adapting.
FWIW there is no obstructions behind the speaker. Not even a hint of the window or it's tracks. Clearence in front of the speaker is slightly reduced in the forward most lower corner of the door panels as the panel tapers inward to the door opening.
FWIW there is no obstructions behind the speaker. Not even a hint of the window or it's tracks. Clearence in front of the speaker is slightly reduced in the forward most lower corner of the door panels as the panel tapers inward to the door opening.