the back speakers are 6x9 and the fronts are 6.5, but 5.25 can fit too, with an adapter
Try this: http://mjmautoinnovations.com/honda.htm
If it is the rear speaker it is 9 x 6 Ovals for the Honda accord coupe 98. should be similar for the sedan.
61/2 front and back
Front: 5-1/4" Rear: 6" x 9"
6.5" round in front, 6"x9" in back.
The fronts are 6 1/2" speakers and the rears are 6x9s.
2 sizes from factory before you have to upgrade your suspension
The speaker size for the front doors in a '92 Accord are 6.5". Just as an add-in: http://mjmautoinnovations.com/honda.htm This will tell you about front, back, all years.
6x9 is the speaker size.
The speakers are 6.5 inch round..
The speakers in the back is 6x9
6.5" all the way around, 8" stock sub if you have the 7spkr, tweeters are 1" i believe in the front