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i need audio circuit

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magician

New Member
Hi

I search for 4.1 Or 2.1 or 5.1 speaker circuit

and i cant found it

maybe i found It here


i need It so much



and thanks

 

kinjalgp

Active Member
I think he is searching schematics for Creative (TM) Inspire 4.1
I doub't whether if you'll can get it anywhere on the web.
 

magician

New Member
hamfile

yes i mean a schematic i can bulid


kinjalgp

i searching schematic for any 4.1 speaker

i dont mean Creative (TM) Inspire 4.1 only

but i want any schematic for any 4.1 sound system
 

Gene

New Member
I think this is just 5 amplified speakers. To get the real 2.1, 4.1, 5.1 or 6.1 sound experience, you will need to add a 4-channel sound card with a Dolby decoder to drive the speakers as descrete channels. The real trick is in the card - and I don't think Dolby will share their technology.
 

kinjalgp

Active Member
Here I found a simple schematic for surround sound decoding.
http://www.sound.westhost.com/project18.htm

This is not real dolby decoder but simple filters which separate out low, high and mid frequencies from audio signal and separately feed individuals amplifiers. The dolby chip does the same thing but more precisely and with less distortion. All you need to construct is 5 separate power amplifiers and connect the output of this circuit to them. Remember that power of sub-woofer should be greater than that of the satellites.
 

magician

New Member
gene

not all trick just in the card
nut i think the good sound system is depended on the card and the subwoofer quality .


kinjalgp

thank you very much Mr kinjalgp

but iam beginner in electronic circuits
and i want to understand something
are this schematic fit to be a good subwoofer
i can plug it on my computer
and hear a good sound i cant hear it from the normal speakers ?
 

kinjalgp

Active Member
Yes you can plug it into your computer sound card provided you have 4-outputs on it. If you construct it carefully , the sound quality will be good. You can compare it with dolby decoder since the job of both of them is same but you can't say that it is exactly same as a dolby decoder since there are many other things that chip performs. The above circuit performs only the basic filtering task.

But overall it will be a good hearing experience since separating audio frequencies and applying them to those speakers which are just made to reproduce them will create better effect than single speakers.

Mind that you have to construt 5 other power amps. to connect at the output of decoder circuit which will drive the speakers and sub-woofer.
 

magician

New Member
thank you very very much Mr kinjalgp

i well try to construct it

but what a kind of power amps i can built it
and it be suitable for this circuit ?


and iam very sory if i was tiresome
 

kinjalgp

Active Member
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