Yes the new db+ is even shorter in depth than the older db's . In the front you need to add a ring to fill in the space where they bent the metal in around the original speaker . If you click on my photo it will take you to my f photo flickr if you click on the back arrow next to the photos you can see all the photos I took and how it fits with the ring spacer . In the back there is a plastic piece that holds the grill on . The speaker fits in at plastic piece . The original speaker is held in the plastic piece with a single screw in the middle of the back of the speaker . All you have to do is cut the very back plate that the screw went through because the new db+ is just a little longer so once the back plate is cut out the new db+ will fit in perfect There is photos of that too on flickr . On the back you don't even have to take the panel off. You just unsnap the bottom half pull the plastic back enough to unplug the wire . the speaker and plastic piece will come out with 3 screw its all inside the cut out of the panel . If the wire connection wasn't so far away from the speaker hole you wouldn't even have to unsnap anything but the connection is down at the opening in the bottom front corner .It took me about 3 minutes and the old speaker and plastic piece was out . Cutting the plastic piece was pretty easy also . Here is what the plastic piece will look like once its cut .
IMG_2108 by
myridevlx600, on Flickr, You have to cut one of the plastic arms all the way off to make room for the capacitor . You can see it in this photo .
IMG_2110 by
myridevlx600, on Flickr . When thats out of the way the speaker drops right in . I just bent 2 of the tabs over ans driled a small hoe in the tab and the plastic piece to hold it in place . If you watch texasknowhow's youtube video He just used silicone caulking to hole it in place . Texasknowhow mademe the rings for the front and they fit perfect he has it down pat and is making them for people . There is his video . He used the older db speakers that have a different look and size so he had to do a 2 ring system to give the speaker but with the new one you only need one ring and the panel and grill fits over the speaker . On the back speaker he had to cut the arms out of the plastic piece because the older db's had a bigger magnet the new ones fit right in and the arms help hold the new speakers in place .