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So I’m planning to add extra low pass filter circuit to this circuit. I make it well. What do you mean by ‘poor’? BA stereo amplifier circuit admin November 3, 11 Comments.

Purpose of the Zobel network is to reduce oscillations and improve high frequency stability of the amplifier. I just could not depart your web site prior to suggesting that I really enjoyed the standard info a person provide for your visitors? By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Probably means ‘bass’ output is poor.

I don’t have any idea how to do that properly.

Since you didn’t provide a link to the chip datasheet, we don’t know what it’s supposed to do. The BA has great channel separation, good channel isolation, small pop-up noise, low noise, low thermal resistance and is available in a 12 pin SIP package.


It can deliver 5W per channel into a 4 ohm loudspeaker at 9V supply. CapacitorsC4 and C8 couple the outputs of the amplifier to the speakers. C1 and C5 are bootstrap capacitors for the left and right channels. What do You mean by “base output is poor”? Hi Rahul use a 22k stereo control ganged control. C11 and C12 are input DC decoupling capacitors for the left and right channels. What is the function of capacitor and resistor at pin 4 and 7.

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Other applications of BA are portable audio players, stereo component systems, television etc. Do you mean that the lower frequencies are not loud enough? Addng a low pass filter won’t improve anything. Sign up or log in Sign up using Google.

Olin Lathrop k 30 Try uF, or even 10,uF. C9 and C10 are noise filtering capacitors.

BA5406 Datasheet PDF

The operating voltage range is from 5 to 15V DC. Amplifiers based on BA does not require an output coupling transformer and can be operated from a single supply. I tried to search for SIP package heatsinks, but nothing good came up. Hi Soumen you can use the following circuit a very simple one with sigle control operating both the channels. I have designed a simple stereo amplifier which is attached below, but the bass output was bit poor.


(PDF) BA5406 Datasheet download

Capacitor C3 is a power supply filter capacitor. Potentiometers R5 and R6 serves as the volume control for the left and right channels.

This makes the IC suitable for low power car audio applications. That’s no way to improve the perceived bass datashest. The problem here is the uF coupling capacitors into a 4 ohm load: It will reduce the upper frequencies.

Email Required, but never shown. My requirement is to have separate left and right channels and an extra woofer out. However, without knowing anything about the chip, it is obvious that really low bass performance will be poor.

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Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of datasheetprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Hi, what kind of a heatsink does BA need? Thanks for your response.

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Larger caps or a higher impedance speakers would lower the high pass filter rolloff frequency.