break subwoofer

[amanmahadeshwar]

i recently broke open my friends harmon kardon subwoofer(it came with his HP comp)
i want to make an amplifier for my ipod
The woofer has a rating of 12 V, 1A which i can achieve

there is an IC - BA5417 inside , it is a dual power amplifier
DATA SHEET : http://kitsrus.com/pdf/ba5417.pdf

I would like to know a schematic to use this IC for the above application one exists in the datasheet on pg. 4
but i'm not sure if it is workable

Also what sort of power consumption will this thing have

PLEASE HELP I'M A BIT NEW TO THE AUDIO PART OF ELECTRONICS

 

[richie00boy]

What are you unsure about? Pins 3 and 5 are outputs, pins 12 and 11 are their respective inputs.

As the unit has been used as a subwoofer you might have to do something with the input circuitry or pin 9.

 

[amanmahadeshwar]

here is the cct diagram how should i give input, the symbols are a bit odd.

the o/p from my ipod will mean one ground termiinal and the two audio channels where will each of these wires go in the beneath given cct

also how do i introduce volume control to the circuit

please help

 

[Nordic]

the little circles with the s like symbols inside, are the inputs for the two channels, and RL is the speakers... everything elese looks easy enough...

 

[amanmahadeshwar]

power amplifier IC

i have attached the cct diagram i found about this IC BA5417
it is a power amplifier

as one can see pins 11 & 12 are input but how exactly does on give this input
i plan to give input from my ipod so there will be one ground wire and the two audio channels , where exactly do these three wires need to go
also how can i introduce volume control to the cct.

lastly the datasheet of the IC is at :

http://www.ortodoxism.ro/datasheets/rohm/ba5417.pdf

i just cant figure out what current will be needed i plan to supply 12 V (from 8 AA battery) but how much current??

Just for background this amplifier will give output to a speaker the whole project is for making a portable speker for my discman

PLEASE HELP

 

[Nordic]

You see those little fork-like symbols, those are ground...

your input from the ipod, has one ground line and the 2 channels... one going to each input, and ground going to ground...

 

[megajocke]

That schematic is for bridged load, using the chip as one channel with more power...