Full Range - 1st & 2nd Order High Pass & Low Pass Filter Band Pass

 Full Range   = All frequency signal to Speaker

First Order High Pass Filter

• One Capacitor = First Order High Pass Filter
• Capacitor in series to speaker = high frequency only plays on speaker 
• Hight pass crossover are usef to blocking base to small speaker or revent base and midrange from reaching twitter 
• At low freuency it shutoff (open circuit) because of capacitor plates and dielectrict)
• 4.7uf 600v (6db/octave) cap in series of speaker(twitter)

Second Order High Pass Filter

• One Capacitor + One Coil = Second Order High Pass Filter
• capacitor in series follow by parllel coil (across speaker terminals)
• (12db/octave)
• capacitor in series follow by parllel coil (across speaker terminals)
• (6db/octave)

First Order LOW Pass Filter

• One coil = First Order LOW Pass Filter
• First Order (6db/octive) low pass filter 
• Coil in Series to speaker 

Low pass crossover are used to provide pure bass to subwoofer and only bass and midrange 

to mid woofers in 2-way or 3-way systems  (passed signals and as frequency increases it goes to zero)

Second Order Low Pass Filter

• One Coil + One Capacitor = Second Order Low Pass Filter
• Coil in series follow by parllel capacitor (across speaker terminals)
• (12db/octave)

BAND Pass

• capacitor in series with Coil to speaker
• Fird order (6db/octive) bandpass filter
• capacotr in series follow by a coil in series 
• no base, no tribble, only mid-range
• Band pass crossover are less commmon by often used in 2 ay system for midrance 
• it passes certern band (range of sound)