What is the difference between the 5-1/4 Inches Kevlar 2-Way In-Wall Speakers (Pair) - 50W Nominal, 100W Max (PID 4099) and the 5-1/4 Inches 3-Way High Power In-Wall Speaker (Pair)? (PID 7606 )

The difference between PID# 4099 and PID# 7606 is that PID# 4099 is a 2 way speaker,. PID# 7606 is a three-way speaker, so it offers more directionality. It is also a high powered speaker, It features a adjustable Crossover switch allows you to match the speakers to the sonic characteristics of your listening environment and the location in which you place them.  With a Maximum Of 120W Amplifier power the Power Capacity ensures that these drivers won't be overdriven or easily blown out. Both are Kevlar, Kevlar cones are light weight yet extremely rigid providing very precise audio with minimal distortion normally caused by cone flex.  Our kevlar speakers are matched with an equally precise silk membrane dome tweeter made of titanium fiber thread and a high quality crossover network to ensure high fidelity and low distortion.  The lower distortion levels allow the speaker to be driven harder and handle higher peak power levels.  The main benefit our Kevlar speakers are the clarity and fidelity at which they produce audio.