Power Amplifier with Subwoofer – TDA2030 and Ne5532 – 2 x 18...

Power Amplifier with Subwoofer – TDA2030 and Ne5532 – 2 x 18 Watts + 30 W Bass

Circuit Audio Power Amplifier with Subwoofer - Mount Bridge - Using Ne5532 and 4 TDA2030 - 2 x 18 Watts stereo + 30 W sub

This circuit is typical of systems sold for 2.1 PC surround systems, left and right channel and subwoofer. Just plugging in the stereo audio and adjust the volume

Audio amplifier circuit using integrated TDA2030 and op amp Ne5532, has two stereo amplifier left and right satellite and Bass amplifier using TDA2030 in bridge for more power. The filter is made by double operational amplifier Ne5532. Complete assembly with the suggestion of the printed circuit board and has a power supply coupled to the circuit.

This circuit is a remake of another already posted on the Blog, but with some changes, uses two TDA ic’s in bridge to the subwoofer amp, with a new board design with some improvements. The idea is that to achieve maximum 18Watts satellites and the outputs 32 watts in Subwoofer … This power with a maximum of + -18 Volts Speakers and 4Ω. The circuit has adjustable volume for the stereo and subwoofer. Use pots of good quality to make this work.

By making the assembly check all connections and all components are correctly positioned, and the orientation of the pcb, be mounted inverted not seen it work, the components have to be positioned as illustrated above. When mounting make sure that the pin 7812 is different from 7912. Use a good heat sink to the TDA IC’s.

The power supply  is already fixed in the pcb and simply add the transformer, to be with center tap on the secondary and primary according to the network (110/220). The capacitors can be supply of the  4700μF at 10000μF, the resistors are in parallel to discharge these capacitors Great. Always use good quality components in its assembly.

The appropriate transformer to the circuit, according to my withdrawal must be at least 4.5 A transformer or to the 55VA 12-0-12 Volts, to be about-16V +.

Schematic 2.1 audio Amplifier with TDA2030 in bridge (small size)

Schematic 2.1 audio Amplifier TDA2030 ne5532 595x354 Power Amplifier with Subwoofer   TDA2030 and Ne5532   2 x 18 Watts + 30 W Bass tda stereo Power Supply power amplifier circuit power amplifier Circuits Audio amplifier tda Amplifier

Suggested Printed Circuit Board 2.1 audio amplifier with Subwoofer Amplifier (small size)

tda2030 2.1 amplifier subwoofer Bridge pcb 595x207 Power Amplifier with Subwoofer   TDA2030 and Ne5532   2 x 18 Watts + 30 W Bass tda stereo Power Supply power amplifier circuit power amplifier Circuits Audio amplifier tda Amplifier
PCB Copper side

tda2030 ne5532 subwoofer 2.1 op amp 595x214 Power Amplifier with Subwoofer   TDA2030 and Ne5532   2 x 18 Watts + 30 W Bass tda stereo Power Supply power amplifier circuit power amplifier Circuits Audio amplifier tda Amplifier

List of material for assembly of the power amplifier with subwoofer with TDA2030 and Ne5532

Parts Value
Resistors 1/4 W 5%
R1, R11, R22, R24 470 – Yellow, Violet, Brown, Gold
R13, R16, R26 22K – Red, Red, Orange, Gold
R2, R7, 22K 2 Watts – Red, Red, Orange, Gold
R3, R12, R23 33K – Orange, Orange, Orange, Gold
R4, R5, R14, R25 4.7K – Yellow, Violet, Red, Gold
R6, R10, R15, R18, R21, R29 10 – Brown, Black, Black, Gold
R8, R9, R17, R19, R20, R27, R28 10K – Brown, Black, Orange, Gold
C1, C4 10µF/25v – Polarized Electrolytic Capacitor
C2, C7 10000µF/35v* – Polarized Electrolytic Capacitor
C3, C8 1µF/250V – Polyester Film Capacitor
C5, C10, C13, C15, C17, C19, C22, C23, C24, C28 100n/ 100V- Polyester Film Capacitor
C6, C16, 2n2/100V – Polyester Film Capacitor
C9, C11, C12, C14, C18, C21, C25, C26 10µF/25v – Polyester Film Capacitor
C20 47µF/25v – Polyester Film Capacitor
C27 220n/100V – Polyester Film Capacitor
IC1 7912T – Negative Voltage Regulator -12V. Any prefix (LM, NS, KA, etc.).
IC2, IC4, IC5, IC7 TDA2030 – Audio amplifier integrated circuit
IC3 7812T – Positive Voltage Regulator +12 V Any prefix (LM, NS, KA, etc.).
IC6 NE5532N – Integrated Circuit Dual Operational Amplifier
B1 KBU8B – 100V 8A bridge rectifier or equivalent.
LED1 LED 3 or 5 mm any color
R-IN 2 Terminals Connector left channel audio input
R-OUT 2 Terminals Connector right channel audio output
L-IN 2 Terminals Connector left channel audio input
L-OUT 2 Terminals Connector left channel audio output
SUB 2 Terminals Connector Subwoofer audio output
AC 3Terminals Connector to the transformer
J1, J2, J3. J5, J6, J7, J9 J12MM – Piece of wire 12mm
J4 J5MM -Piece of wire 5mm
J8 J7MM – Piece of wire 7mm
P1 10k – Double logarithmic pot, Main Volume Adjustment
P2 10k – Logarithmic pot, adjust the subwoofer volume
Soldering, transformer 12 +12 / 4 Amps (50 Va), Wire, Box for Amplifier, PCB, heat sink for the IC TDA, etc..

*See text

Download files for this assembly – PDF PCB, Schematic,PDF, silk screen, TDA2030A and NE5532 Datasheet .
Download PDF


  1. I have a transformer with dual secondary 16V. After the rectifying I will bi +22v,-22V. The maximum supply voltage for the TDA2030 is +-18V. Will this transformer blow the ICs?

  2. Hi Xtronic, please help me to get this items, where can i buy this project as DIY i myself will assemble it..
    i am very much interested in this circuit..where can i order this..please help me..

  3. Hi Toni. what is the value of capacitor C2 and C7? is it 4700 or 10000 mf mf? I did not find 10000 mf capacitor? And can i use KBU8B 10A instead of 8? And Also can i got TDA2030A ICs instead of tda2030V .. Should it work?

    please tell me detail about the transformer used in this circuit…!

    thank u for showing this circuit and parts name….i have tried many of other circuits….but there is no clear description of parts and there no no power supply circuit diagram for that project.

  5. Bro..i have interest in making this amplifier..but some builders replyed its not fully configured,and the bridging is not well…can you plz give some updated one with corrected issues ….thnx…and wishes for your great future projects……

  6. I make it and … I lost (burn) my IC (SUB-) TDA2030 twice in each 10 seconds T_T .I think the bridge diagram is different from another common bridge diagram. Something strange…

    So i takeoff the SUB- IC and make it to 3x18W (Subwoffer 18Watt same sattlelite) It Ok!!.

    Sound is loud (for me) Bass sound is ok but I not finish yet. It must to burn about 6 hours to hear real sound…

  7. hi the sch of the bridged tda2030 is different from datasheet sch.is it ok to do this project.if any one had tested then plz say how it works.thankyou.

  8. the connections of ne5532n are ok that is v+ and v-…but for the IC’s tda2030v the pins are labelled as vdd and vss…..could u tell me where to hook up those vss and vdd….i mean is vdd–>v+ and vss–>v-….or does the ground wire come in the picture….thanks in advance!