This is a bass filter, using the OpAmp 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 many cases the power source 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.
Circuit diagram of preamplifier with bass filter using Operational Amplifier 5532
Suggested printed circuit board for mounting the Bass filter circuit for Sub-woofer with volume and frequency adjust
| Component | Valor |
| Resistors 1/4 Watts 5% | |
| R1 | 8.2k – Grey, Red, Red, Gold |
| R2,R8 | 150k – Brown, Green, Yellow, Gold |
| R3 | 15k – Brown, Green, Orange, Gold |
| R4 | 1k – Brown, Black, Red, Gold |
| R5, R6 | 22k – Red, Red, Orange, Gold |
| R7, R9 | 10K – Brown, Black, Orange, Gold |
| Capacitor‘s | |
| C1, C5, C6, C10 | 10n/100V – Capacitor polyester |
| C2, c9 | 2200µF/25V – Capacitor electrolytic |
| C3, C7 | 220n /100v- Capacitor polyester |
| C4, C8 | 100µF /25V – Capacitor electrolytic |
| C11, C12,C14, C15 | 47n/100V – Capacitor polyester |
| C13 | 22µF/25V – Capacitor electrolytic |
| Semiconductors | |
| D1, C2, D3, D4 | 1N4004 or equivalent – Silicon Rectifier Diode |
| IC1 | 7912 – Integrated circuit voltage regulator negative -12 volt |
| IC2 | 7812 – Integrated circuit voltage regulator positive +12 volt |
| IC3 | NE5532N or equivalent dual operational amplifier |
| Miscellaneous | |
| AC | Connector for 9 ~12 Volts transformer with center tap |
| IN | Input connector for stereo audio |
| OUT | Connector to the sub-woofer amplifier |
| P1 | 47k – Potentiometer for volume control |
| P2 | 47K – Double potentiometer to adjust the cutoff frequency |
| Solder, wire, PCB, Knob for pots, box, transformer 9-12 Volts / 500mA, etc.. | |
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 : surya0562@rediffmail.com
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