Do you have a question about the Hifonics ZS35CX and is the answer not in the manual?
Use the factory tweeter location behind door panels for premium sound systems if available.
Custom mounting may be necessary if no suitable factory location exists. Check mounting depth.
Details on surface and flush mounting options for tweeters, with the flush configuration shown.
Secure the crossover away from interference and moisture for proper operation.
Guidance on accessing and removing factory door and rear speakers, noting panel removal techniques.
Details on installing speakers in factory door, small panel, custom, or rear locations.
Verify speaker fit and depth, and use factory boots for routing wires.