The architecture features a central 100 mm Kevlar midrange cone and three 25 mm tweeters in the centre and on the A pillar. (topspeed.com)
With a 63.5 mm down - firing woofer and 20 mm tweeter powered by Dolby, Echo Plus has crisp highs, deep bass, and 360 ° audio to fill your room with music. (amazon.ca)
Now the MEGABLAST is larger and has two 25 mm tweeters inside along with two 55 mm active drivers as well as two passive radiators. (androidheadlines.com)