av2030 AVIC, av2030 Datasheet - Page 9

• Manufacturer Part Number: av2030
• Description: Linear Integrated Circuit
• Manufacturer: AVIC

@vic
The components values calculated for fc=900Hz using a Bessel 3rd Sallen and Key structure are:
Using this type of crossover filter, a complete 3-way 60W active loudspeaker system is shown in Fig. 20.
It employs 2nd order Buttherworth filter with the crossover frequencies equal to 300Hz and 3kHz.
The midrange section consistors of two filters a high pass circuit followed by a low pass network. With Vs=36V the
output power delivered to the woofer is 25W at d=0.06%( 30W at d=0.5%).The power delivered to the midrange and
the tweeter can be optimized in the design phase taking in account the loudspeaker efficiency and
impedance(RL=4: to 8:).
It is quite common that midrange and tweeter speakers have an efficiency 3dB higher than woofers.
IN
Vs+
AV2030
1 PF
0.1 PF
0.1 PF
300Hz to 3kHz
22k:
High-pass
Low-pass
Band-pass
300Hz
3kHz
0.1 PF
0.1 PF
22k:
22k:
C1=C2=C3=22nF,R1=8.2K:,R2=5.6K:,R3=33K:.
100 PF
22k:
100 PF
47 PF
LINEAR INTEGRATED CIRCUIT
1
2
1
2
1
2
0.22 PF
0.22 PF
TDA2030
TDA2030
TDA2030
UTC
UTC
UTC
2.2k:
Vs+
2.2k:
5
3
5
3
5
3
Vs+
1N4001
1N4001
1N4001
1N4001
4
4
4
High-pass
3kHz
BD908
BD907
100 PF
220 PF
Midrange
Tweeter
Vs+
QW-R107-004,B
2200 PF
Woofer