Bass filter circuit diagram, subwoofer preamplifier with volume control. This is a bass filter include PCB, using the Op Amp Ne5532 or another of your choice. The circuit is simple to set up and already has symmetrical power supply, the transformer must use 9-12 volts / 500ma with center tap … In numerous application, the power supply can be made by the power amplifier … Just watch out for the limit supported by the voltage regulators.
The circuit has two pots, one for volume adjustment and another to adjust the filter cutoff frequency of 50 to 150Hz, if you need to install the pots in a panel, use shielded wires to make connections.
About the Bass filter circuit diagram subwoofer preamplifier
We use 2 operational amplifier integrated circuit, IC1A is configured as an inverting amplifier and gain of 13.6, if you need to change this just change R4. C11/R3 is a high pass RC filter with cutoff frequency at 15.91Hz and IC₂A is a high pass filter with cutoff frequency at 28Hz.
IC₂B is a low-pass filter with cutoff frequency adjustable from 28 to 234 Hz and IC1B is a low-pass filter with cutoff frequency at 234Hz. P1 adjusts the cutoff frequency and P2 adjusts the volume.
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The scheme also features the power supply circuit using 7812 and 7912 voltage regulators.
To use, the filter still requires a power amplifier, so it can drive a subwoofer type speaker.
If you want to change the parameters of this circuit, see here on this site the calculators ⇒ http://sim.okawa-denshi.jp/en/Fkeisan.htm
Schematic Bass filter circuit diagram subwoofer preamplifier
Printed Circuit Board PCB for mounting Bass filter circuit diagram subwoofer preamplifier
BOM Subwoofer bass filter circuit assembly
Last update: 10/16/2022 20:19
| Part | Value | Description | Quantity |
| Capacitors | |||
| C1, C2 | 2200uF/25V | Electrolytic capacitor | 2 |
| C3, C4, C5, C6, C7, C8, C9, C10 | 100n | Polyester capacitor | 8 |
| C11 | 1uF | Polyester capacitor | 1 |
| C12, C13 | 100uf/25V | Electrolytic capacitor | 2 |
| Semiconductors | |||
| LED1 | Led 3 mm | Led Color of your choice | 1 |
| IC1, IC2 | NE5532N, TL072 or equivalent | Operational amplifier | 2 |
| B1 | KBP307 or equivalent. | Bridge rectifier | 1 |
| IC3 | LM7812 | 12V positive voltage regulator | 1 |
| IC4 | LM7912 | Negative voltage regulator -12V | 1 |
| P1, P2 | 50k | Double potentiometer | 2 |
| Resistors 1/4W | |||
| R1, R2 | 56K | Green, blue, orange, gold | 2 |
| R3, R5, R6 | 10K | Brown, black, orange, gold | 3 |
| R4 | 68K | Blue, gray, orange, gold | 1 |
| R7, R8, R9, R10 | 6.8k | Blue, gray, red, gold | 4 |
| R11 | 4.7K | Yellow, Violet, Red, Gold | 1 |
| Miscellaneous | |||
| CN1 (IN) | Audio Input | Terminal block 2 pin 5.08 mm | 1 |
| CN2 (SUB) | Audio output for subwoofer | Terminal block 2 pin 5.08 mm | 1 |
| CN3 (AC) | Power Supply (Transformer) | Terminal block 2 pin 5.08 mm | 1 |
| Solder, Wires, PCB, Knob for the potentiometers, box, 9 to 15 Volt transformer /250mA, etc. | |||
Download files for mounting the bass filter, including PCB in PDF, PNG, PS and Gerber
Printed circuit board now updated with Gerber added.
Hi, how are you? necessarily the capacitors C11, 12, 14, 15 must be 100v? why?
Hello Santiago
>50V ok!
Hi toni , What is the way connected this Circuit with speaker stereo
Hello Ahmed
Split output.
Toni please can I get a 2 band active circuit for bass guitar with a bright switch schematic
Hello Daniel
Thanks for the suggestion, noted here, for future project
Excellent project it works very well.
Thank-you Toni.
Hello tom0mason
Thanks your feedback!
If i m using tl072 at ne5532 so can its works???? PLz Sir Reply…
There are other people to look at for a design using TL072 try https://sound-au.com/project48.htm aka Eliot Sound.
Hello tom0mason
Thanks!
Hii Toni sir Please send me high power subwoofer only subwoofer circuit board
What can i do if i want to frequency low down 20hz? so !
What components should be changed in the circuit?
hi can you tell me the dimensions in millimeters or centimeters of this plate
That information is available on the right hand side of the screen just below the twitter and subscriber links.
hi i have a request if you would give me the width and the plate length
pls help me sir, high frequency heard bass circuit diagram layout & parts list.
ic using TBA820M.
Can i use Tl072 instead of NE5532N? If i Tl072 instead of NE5532N, have i to change any resistor or capacitor value of this circuit?
hi, don’t panic just remove the ac to dc converter part and connect pin 8 to postive and 4 to negative
terminal of the battery
please send best subwoofer amplifier circuit and part please brother
Good day!!!please help le to assemble pawered sub woofer in 10″ speaker..please send me a diagram and parts also…thanks…
Does I need to connect an amplifier to the out in circuit or can i connect a subwoofer directly to it?
HI Collins
It requires connecting to an amplifier.
Thanks 4 ur reply..Can u pls suggest me a 5.1 circuit pls..
What’s the best frequency to get the kick drum more distinct?
A little correction needed in semiconductor parts list.
Kindly ammend these 7812 is a +12Vdc regulator & 7912 is a -12Vdc regulator IC.
Circuit is perfect & working very well.
Thanks to Mr Toni for giving us such a nice n excellent performing circuit.
Regards Kashif.
can i use a 1microfarad capacitor in place of 47n caps bcoz the 47n caps are not available at my place of residence..
please size pcb in centimeters
A.o.a
i want 2 buy this but this circuit is no avlabel in pakistan
You can self made this circuit at home.Easy to build n working excellent.Thanks Mr Toni.
How can i use this filter in my car because the problem is power supply the car battery have only 12v and gnd not a 12-0-12 plzz help me sir plz plz
How to use this filter in my car.
.because in car there is only power is +12v and gnd not a 12-0-12???
suPer
firstly i said-english is not my native language.ok
i made this…
good…nice working..i like it.
thank you toni…
Can you give me a 5.1 surround soud decoder circuit.,please…
(send it to my email)
the signal on the 5th pin is ok but the o/p of the 7th pin of op amp is showing heavy noise i tried NE5532 p and LM833an but both shows this noise…how it can be corrected? siganl fed was from the signal geanerator not the real audio.
nice filter….keep it up…
Its not working
it’s very good experiment.!!! It’s work.!! Tankz
Very Good!
Filter is 24dB/oct or 12dB/oct ?
Thanks!!
Solder, wire, PCI, Knob for pots, box, transformer 9-12 Volts / 500mA, etc..
Is 12v is the vct of the transformer??
or 12-0-12 ?(ie vct =24v).
can this circuit use with LM3886 amplifier circuit. plz send your response to my Mail : [email protected]
not working .i made this but full noise plz help
Can you plz tell me that if i can make the same ckt on vero board or not??????????
Can i make the same circuit on vero board???
Plz reply soon…
Thanx in Advance….
Can i make the same circuit using Vero board ???
Plz reply soon ….
Thanx in advance
This is the best one I’ve ever used. Thank u so much. Could u please do me a favour. Can u design a 5.1 channel good quality filter, so that i can use that wit one of ur best power amplifiers
tyri