Showing posts with label Subwoofer Amplifier. Show all posts
Showing posts with label Subwoofer Amplifier. Show all posts


70W x 1ch BTL Power Amplifier

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Circuit diagram for AN17850A:
70W x 1ch BTL Power Amplifier
70W x 1ch BTL Power Amplifier



400W Subwoofer amplifer circuit

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  • Class-T architecture with proprietary DPP 
  • “Audiophile” Sound Quality 
  • Full Audio Bandwidth, 20Hz to 20kHz 
  • High Efficiency 
  • Supports wide range of output power levels and output loads by changing supply voltage  and external Mosfets 
  • Compatible with unregulated power supplies 
  • Output over-current protection 
  • Over- and under-voltage protection 
  • Over-temperature protection 
  • 48-Pin LQFP Package

The TDA1400 is a one-channel, Amplifier Driver that uses Tripath’s proprietary Digital Power Processing  (DPPTM) technology. The TDA1400 offers higher integration over previous Tripath amplifiers driver  chipsets while providing exceptional audio performance for real world applications. Class-T amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers. The TDA1400 is typically configured as a single supply, bridged output. This makes the power supply requirements simpler and maximizes the output power for a given voltage rail. Additionally, the TDA1400 can be configured as a split supply, bridged amplifier, with the addition of some external components. The TDA1400 is capable of full range operation but the target application is subwoofers due to the high output power capability and single channel operation.

Circuit diagram
400W Subwoofer amplifer circuit



100W Subwoofer Amplifier

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Features for 100W Subwoofer Amplifier:
  • Output power (f=1 KHz, d=0.5 %): 100 W in 8 ohm
  • Supply voltage: ................ СЃ 40 V
  • Quiescent current: ............. 50 mA
  • Maximum current: ............... 2.6 A
  • Sensitivity: . 600 mV
  • Frequency response: ............ 10-35000 Hz (-1 dB)
  • Distortion HD: ................. 0.01 %
  • Intermodulation dist.: ......... 0.02 %
  • Signal/noise: 83 dBConstruction

Circuit diagram for 100W Subwoofer Amplifier:

100W Subwoofer Amplifier
more info to orifinal article sourse



140 watt subwoofer circuit diagram

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140 watt subwoofer circuit diagram

140 watt subwoofer circuit diagram


100 watt subwoofer for home circuit diagram

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Circuit Diagram



1000W Power Amplifier

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Circuit Description 1000W Power Amplifier:

Power amplifier has up to 1000 Watt power, this circuit made one channel only so if you want to create a stereo in it must be made one again, actually this is more suitable power amplifier in use for Sound System or outdoor, so if only in use for the house I think is less suitable.
Maybe you've seen or even have an active speaker and there is written 1500 watts PMPO (Peak Music Power Output), make no mistake this is different from Power Amplifier Active Speaker, I often dismantle such Active Speaker in it only a power with power no more than 150 watts by using the transformer 2-3 Ampere. PMPO is not a real power which is issued by the Power Amplifier, but counting all the speakers that there is, for example: if there are 5 pieces of speakers on each channel and each speaker has a power of 10 W then it is 100 W PMPO.

Circuit Diagram 1000W Power Amplifier:

1000W Power Amplifier

Partlist 1000W Power Amplifier:

While this 1000 Watt Power Amplifier minimal use transformer 20 Ampere. And the output of PowerAmplifier DC voltage contains approximately 63 volts, with currents and voltages of this magnitude, this 1000 Watt Power Amplifier will not hesitate hesitate to destroy your woofer speakers to connect. To overcome that then before the speaker on connects to 1000 Watt Power Amplifier must be in pairsSpeaker Protector.
Actually if you want to create a Power Amplifier with great power does not have to make a PowerAmplifier with great power. Example: you want to create a Power Amplifier with 10 000 Watt power. You do not have to assemble a Power Amplifier with power of 10,000 watts, but you assemble thepower Power Amplifier Small but many, such as you assemble the Power Amplifier with 1000 Watts of power for as many as 10 pieces, it will produce 10 000 Watt Power Amplifier helpless.
Circuit uses power transistors pair of 5 x 5 x 2SA1216 and 2SC2922 and 2SC1583 use a differentialamplifier that actually contains 2 pieces of transistors that are in containers together. Why use such built-in amplifier differental tujuanya so identical / similar, could have uses 2 separate transistors but can result in amplifier so it is not symmetrical.
Tips combining speaker.

To get the speakers with great power combining techniques can be used in parallel series, combining each group of speakers should sepaker they will have the same impedance, the same type (Woofer, Mid Range or tweeter) and the same power. Number of merging these speakers should consists of 4 , 9, 16 ff, see picture
Example: The number of speakers have 4 pieces each of its 200 Watt power generated will be aspeaker at = 200 x 4 = 800 Watt. If there are 9 speakers 200 W then the result = 9 x 200 W = 1800Watt.

Subwoofer power amplifier IC OPA541BM

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Circuit Diagram

Subwoofer power amplifier IC OPA541BM

Amplifier Description


Subwoofer power amplifier circuit based on IC OPA541BM very suitable for use in subwoofer speakers, these amplifiers possess excellence in sound issued because the sound is very clear and issued in accordance with subwoofer speakers in a low tone.



Car audio amplifier with IC TA7203P

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Circuit Diagram

Car audio amplifier with IC TA7203P

Circuit Description

Stereo car power amplfier with TA7203P , is suitable for the room your car , your car it will build an increasingly crowded and felt like using high-class amplifiers and speakers. Simply using this circuit and some speaker subwoofer speakers you can enjoy it.

Technical information :

  • Max voltage = 20 Volt
  • Min voltage = 8 Volt
  • Max output = 2 x 40 Watt
  • RL = 8 Ohm

14 Watt car audio amplifier circuit

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Basic operation of this amplifier is on IC TEA2021 ,

In this circuit minimum require voltage is 4 volts and maximum voltage 25 volts. Power output 14 Watt with 4 Ohm impedance. See this schematic.

170W power amplifier LM4651 and LM4652

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170 Watt power amplifier is a power amplifier that is built by IC LM4651 and LM4652.

Part of this power amplifier driver using the LM4651 IC designed specifically for the purpose of the class AB amplifier driver with short circuit protection feature, containing under voltage, thermal shutdown protection and standby functions. Section 170 Watt power amplifier using LM4651 IC with a MOSFET power amplifier is equipped with temperature sensors that will be used by IC LM4651 as controlnya thermal signal. IC IC LM4651 and LM4652 are designed specifically to each other in pairs to create a class AB power amplifier with protection features are detailed. Detailed series of 170 Watt power amplifier can be seen in thethe following figure .

170W power amplifier LM4651 and LM4652
Power amplifier circuit requires supply voltages +22 V DC symmetrical 0-22V. Power Amplifier with IC LM4651 and LM4652 are often used in portable HiFi systems such as powered speakers, power subwoofer and car audio power Booter. D1, D2, D3 and D4 in series 170 watt power amplifier with LM4651 and LM4652 is a 22V zener diode.

TDA7294 150 W Power Amplifier

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Description of bridge TDA7294:

This is power amplifier based on IC TDA7294 with output power 150W with 8 ohm impedance, source voltage + - 25V. for circuit see image below.
Circuit diagram for TDA7294:
TDA7294 150 W Power Amplifier


200W power amplifier complete power supply

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This 200W power amplifier circuit using IC STK 4050.

STK 4050 is a power amplifier module is very powerful, because the IC is already a module then only needed a little extra components to build a reliable 200W Power Amplifier. Here is a picture series of Power Amplifier ICs 200W use STK 4050 complete with its power supply


Subwoofer Low Pass filter Circuit

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This is the simplest Subwoofer Low Pass filter Circuit using uA741 single op amp ic. The circuit is very low cost with respect to their work. The cut off frequency of this circuit is 25Hz to 80Hz maximum. Using this circuit , you can easily design a 2.1 Sub-woofer Speaker System at your own Home. The circuit contains very few components.In Pakistan, the cost of this circuit with PCB is Rs:45 The same circuit is working in my own hand made sub-woofer system. 
Subwoofer Low Pass filter Circuit

Parts List:

R1,R3,R4 = 10K 1/4W
R2=100K 1/4W
CY1,CY2 = 0.22uF Polyester
C1,C2 = 10uF/25V Electrolytic
IC1 = uA741A Single Op-Amp Ic + 8 Pin Ic Socket
3 Pin Male & Female Connector x 2
2 Pin Male & Female Connector x 1
PCB as in required size 4.5 cm x 3.4 cm


Satellite + Subwoofer 3-Speaker System Electronics Crossover IC

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  • CMOS Technology 
  • Low Power Consumption 
  • 2 Built-in Individual Volume Control: 0 dB to -60dB 
  • 2-Channel 2nd Order High Pass Filter + 1 Mixed Mono Subwoofer Low Pass Filter 
  • Cross-Over Frequency adjustable by external passive components 
  • Control Interface of Volume Control: UP/DOWN Key (MCU is not necessary) 
  • Built-in 3D Effect and Loudness Function 
  • Supply Voltage: 5V to 9V
Satellite + Subwoofer 3-Speaker System Electronics Crossover IC



Subwoofer filter Circuit

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Circuit to solve new to the buffer input for the signal R + L and cutting area of ​​the Muting issue and the cut-off point often fear for VR 4 floor hard so I divided into 2 layers using 2 the time that the cut frequency, if wanted. It has layers of fine cut to the same location. I use ic tl072. And replace series capacitor 0.022 with 0.047 . That a soft voice that sounds good offline but not feeling heavy and dial around the back lot, try changing the capacitor. Beyond the traditional. Intended to adjust to extremely low frequency adjustment for the store before so I think that the device is used. Could differ. I sent in this condition before.


300W Subwoofer Amplifier

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150W Subwoofer

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It may seem a little excessive, but since I had the programmer, the C compiler and some spare PIC16F627 chips, this solution to handling power on mute, 12V trigger powering and LED for status would be small, reliable and cheap.

Three relays would be involved.
Mains switching relay, to switch in the 225VA toriodal transformer
Output switching relay, to disconnect the speaker from the amp
Input switching relay, to remove any input so the output switching relay switches a very small current, prolonging its life (thanks to Mark Hennessy for this idea).

Two LEDs would be on the front of the box. One LED for standby, one (blue) LED for power on. The would both flash in turn when the power on sequence runs.

Finally, there would be two inputs. One small push button for mounting on the front of the case for manual power on/off, and one 12V trigger input, isolated using a standard opto-isolator in order to prevent earth loops.

Thats all there is to it. Without the PCB mount transformer, the PCB turns out pretty small. It has been desgined to fit my relays (and other components) I had available to me, but is provided as a scan below if you want to use (and modify it in your subwoofer/power amplifier project. The C file, and HEX file for the PIC micro is also provided.

Origial Article sourse

50 Watt Subwoofer Amplifier

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R1  200 Ohm 1/4 W Resistor
R2  200K 1/4 W Resistor
R3  30K 1/4 W Resistor
R5  1K 1/4 W Resistor
R6  5K 1/4 W Resistor
R7,R10  Meg (5%) 1/2 W Resistor
R8,R9  0.4 Ohm 5 W Resistor
R11  10K Pot
R12,R13  51K 1/4 W Resistor
R14  47K 1/4 W Resistor
C1  100uF 35V Electrolytic Capacitor
C2  0.011uF Capacitor
C3  3750pF Capacitor
C4,C6  1000pF Capacitor
C5,C7,C8  0.001uF Capacitor
C9  50pF Capacitor
C10  0.3uF Capacitor
C11,C12  10,000uF 50V Electrolytic Capacitor
U1,U2  741 Op Amp
U3  ICL8063 Audio Amp Transister Driver thingy
Q1  2N3055 NPN Power Transistor
Q2  2N3791 PNP Power Transistor
BR1  250 V 6 Amp Bridge Rectifier
T1  50V Center Tapped 5 Amp Transformer
S1  SPST 3 Amp Switch
S2  DPDT Switch
F1  2 Amp Fuse
SPKR1  8 Ohm 50W Speaker
MISC  Case, Knobs, Line Cord, Binding Posts Or Phono Plugs (For Input And Output), Heatsinks For Q1 And Q2


60W Subwoofer Amplifier Circuit

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The output power: 40 w 8 ohm and 60 w 4 ohm load. Preamplifier is used in the same 60 v rails as the power amplifier gain blocks can implement two transistors can provide about 20 v RMS output. This provides a very high input overload. List at least the recommended value is C8. 3300μf capacitor or two 2200μf capacitors connected in parallel would be a better choice. Darlington transistor types of alternative has MJ11014 (Q3) and MJ11013 (Q4) or TIP142 (Q3) and TIP147 (Q4). T1 transformer can be also a 24 24 v or 25 25 v type (ie. 48 v or 50 v center tapped). SW1 switch insert low-cut feature when open. In all cases, Darlington transistors are used as the output device is essential that the transistor (Q2) pass in close thermal contact with the sensor output transistors as possible.

R1__________________6K8    1W Resistor
R2,R4_____________470R   1/4W Resistors
R3__________________2K   1/2W Trimmer Cermet
R5,R6_______________4K7  1/2W Resistors
R7________________220R   1/2W Resistor
R8__________________2K2  1/2W Resistor
R9_________________50K   1/2W Trimmer Cermet
R10________________68K   1/4W Resistor
R11,R12______________R47   4W Wirewound Resistors

C1,C2,C4,C5________47μF   63V Electrolytic Capacitors
C3________________100μF   25V Electrolytic Capacitor
C6_________________33pF   63V Ceramic Capacitor
C7_______________1000μF   50V Electrolytic Capacitor
C8_______________2200μF   63V Electrolytic Capacitor (See Notes)

D1_________________LED    Any type and color
D2________Diode bridge   200V 6A

Q1,Q2____________BD139    80V 1.5A NPN Transistors
Q3_____________MJ11016   120V 30A NPN Darlington Transistor (See Notes)
Q4_____________MJ11015   120V 30A PNP Darlington Transistor (See Notes)

SW1_______________SPST Mains switch

F1__________________4A Fuse with socket

T1________________220V Primary, 48-50V Secondary 75 to 150VA Mains transformer

PL1_______________Male Mains plug

SPKR______________One or more speakers wired in series or in parallel
                  Total resulting impedance: 8 or 4 Ohm
                  Minimum power handling: 75W

Subwoofer Amplifier 100W

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R1 - 6K
R2 - 6K
R3 - 130K
R4 - 22K
R5 - 15K
R6 - 3.2K
R7 - 300 Ohms
R8 - 30 Ohms
R9, - R10 3 K
C1, - C2 0.1uF, electrolyte
C3,- C5,C6 10uF, electrolyte
C4 - 1uF, electrolyte
Q1 - 2N222A
Q2 - TIP41
Q3 - TIP41
Q4 - TIP147, PNP
D1, - D2 1N4007
Dual Supply -  +/-30V