TDA2030A
LINEAR INTEGRATED CIRCUIT
the tweeter can be optimized in the design phase taking in account the loudspeaker efficiency and impedance
(RL=4Ω to 8Ω).
It is quite common that midrange and tweeter speakers have an efficiency 3dB higher than woofers.
3WAY 60W ACTIVE LOUDSPEAKER SYSTEM (Vs=36V)
Vs+
Low-pass
2200
F
0.22 F
1N4001
1.5
300Hz
1
F
IN
22k
22k
BD908
1
5
UTC
TDA2030A
4
18nF
680
2200
F
2
0.22
F
33nF
3
100
F
22k
1
BD907
4
1.5
100
1N4001
0.22
F
3.3k
Woofer
Vs+
Band-pass
300Hz to 3kHz
0.22
F
1N4001
0.1
F
0.1 F
22k
22k
1
2
5
220
F
UTC
4
18nF
TDA2030A
3.3k
6.8k
1
3
8
3.3nF
0.22
F
1N4001
100
F
2.2k
Midrange
Vs+
100
0.22
F
High-pass
3KHz
1N4001
Vs+
3.3nF
3.3nF
1
2
5
100
F
UTC
4
22k
TDA2030A
22k
12k
1
3
8
1N4001
0.22
F
22k
100
F
47
F
2.2k
Tweeter
High-pass
3KHz
100
MUSICAL INSTRUMENTS AMPLIFIERS
Another important field of application for active system is music.
In this area the use of several medium power amplifiers is more convenient than a single high power amplifier, and
it is also more reliable. A typical example (see Fig. 4) consist of four amplifiers each driving a low-cost, 12 inch
loudspeaker. This application can supply 80 to 160W rms.
UNISONIC TECHNOLOGIES CO., LTD
10 of 14
QW-R107-005,C
www.unisonic.com.tw
UTC [ Unisonic Technologies ]
