10watt audio amplifier with bass boost

jayson07191990

New Member

• Jan 8, 2012

• #1

please help me to explain this circuit...just even a short explanation... please

 

Last edited: Jan 10, 2012

alec_t

Well-Known Member

Most Helpful Member

• Jan 8, 2012

• #2

Try Googling for 1) tutorials on basic electronics to get an understanding of the function of the parts, and 2) the operation of bass boost circuits.
As for drawing block diagrams, any software for graphics or creating presentations (Powerpoint, etc) should suffice.

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Jan 8, 2012

• #3

It's really a very poorly designed circuit as well, so not a good choice to be examining.

 

jayson07191990

New Member

• Jan 8, 2012

• #4

Do not comment its a bad circuit.

 

jayson07191990

New Member

• Jan 10, 2012

• #5

amplifier with bass boost

audio amplifier with bass boost

 

Last edited: Jan 10, 2012

S

simonbramble

Active Member

• Jan 10, 2012

• #6

audio amplifier with bass boost to you too. Here is a battery powered MP3 player booster I designed some years ago. It was designed to attach to PC loudspeakers that nominally have a 1k input impedance

 

Attachments

• Booster1.jpg

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Last edited: Jan 10, 2012

jayson07191990

New Member

• Jan 10, 2012

• #7

audio amplifier

audio amplifier with bass boost-amp10.gif

please help me to explain this circuit...just even a short explanation... please

 

S

simonbramble

Active Member

• Jan 10, 2012

• #8

no attachment

 

V

vlad777

Member

• Jan 10, 2012

• #9

Transistors Q1,Q3 and Q2,Q4 are Sziklai pairs that add current capability to your
op amp (operational amplifier) IC1.
C6,C7,C8,R5,R6,R7,R8,P2 is the feedback, which is also responsible for bass boost.
Essentially this amplifier amplifies bass more then
it amplifies higher frequencies.

 

Last edited: Jan 10, 2012

4pyros

Well-Known Member

Most Helpful Member

• Jan 10, 2012

• #10

I would consider the op amp as a preamp and the transistors as the power amp. With the bass boost feed back on the bottom.

 

audioguru

Well-Known Member

Most Helpful Member

• Jan 10, 2012

• #11

Jayson, stop posting the same thread 3 times here.

 

audioguru

Well-Known Member

Most Helpful Member

• Jan 10, 2012

• #12

Jayson, stop posting the same thread 3 times here.

 

jayson07191990

New Member

• Jan 11, 2012

• #13

thanks for the help, any additional explanation to make it longer.

 

jayson07191990

New Member

• Jan 11, 2012

• #14

Sorry Im just new here i thought it was not posted yet.

 

jayson07191990

New Member

• Jan 11, 2012

• #15

how the explanation can you help me. Thanks..

 

jayson07191990

New Member

• Jan 11, 2012

• #16

Nice, but I need at least three transistors as main components.

 

jayson07191990

New Member

• Jan 11, 2012

• #17

I already assembled it I want explanation.

 

electronic novice

Member

• Jan 17, 2012

• #18

better get a new one.