100W Subwoofer Amplifier

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 english.cxem.net

140 watt subwoofer circuit diagram

140 watt subwoofer circuit diagram

100 watt subwoofer for home circuit diagram

Circuit Diagram

1000W Power Amplifier

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.

200 Watt Stereo Car Amplifier

Circuit Description

IC TA8210AH By using this you can apply a series of audio power amplifier is the car audio system. In general, all the speakers in the car using a subwoofer speaker, and woofer. Because the car is not big room so the sound is being required is not too high. Audio amplifier circuit can work at a minimum voltage 12-volt DC, if supplied under voltage 12-voltamplifier work will be less than the maximum. This amplifier output power up to 200W or 2 x 100W stereo with 8 ohm impedance.

Circuit Diagram

200 Watt Stereo Car Amplifier

Part List :

Resistor
R1 =1K
R2 =50K trim
R3 =1K
R4 =50K trim
R5 =680R
R6 =680R
R7 =150K
R8 =2R2
R9 =2R2
R10=2R2
R11=2R2

Capacitor

C1 =1uF
C2 =1uF
C3 =47uF
C4 =47uF
C5 =100n/400V
C6 =220uF
C7 =220uF
C8 =100n/400V
C9 =100n/400V
C10=100n/400V

Intregated Circuit

IC1=TA8210AH

Connector

X2-3=in R
X2-2=gnd
X2-1=in L
X1-1,X1-2=Out R
X1-3,X1-4=Out L

Subwoofer power amplifier IC OPA541BM

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.

10 + 10W STEREO AMPLIFIER FOR CAR RADIO

Circuit diagram for 10 + 10W STEREO AMPLIFIER FOR CAR RADIO

TDA7294 150 W Power Amplifier

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

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

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

500W Subwoofer Amplifier Circuit

500W Subwoofer Amplifier Circuit

Satellite + Subwoofer 3-Speaker System Electronics Crossover IC

• 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

Tone Control Subwoofer Low Pass Filter IC

• CMOS Technology
• 2 - Channel Input
• 3 - Channel Output (Including 1 stereo Output and Subwoofer Output)
• Low Total Harmonic Distortion (THD<0.01%, Subwoofer THD<0.2%)
• High S/N Ratio (S/N Ratio <-87dB, A-weighting)
• Least External Components
• Adjustment of Frequency response by changing the value of the external component
• Single Power Supply: 3 to 8.5 Volts
• Available in 20 pins, DIP or SO Package
• Multi-Media 3D Satellite Speaker and Subwoofer System
• Car Audio
• Audio Equipment
• Sound Card
• Other Electrical Audio Equipment

Tone Control Subwoofer Low Pass Filter IC

Subwoofer filter Circuit

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

150W Subwoofer

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 e-dan.co.uk

50 Watt Subwoofer Amplifier

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

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

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

Car Subwoofer