TDA7294 Stereo/Bridge with PSU

[AndrewT]

I think, lm3886 is good,
but,lm3886 is very costly in india
tda7294 is very cheap in indian market

please help me sir
I will wait for your reply

What is the price of tda 7294 ????

have you thought about why the two chipamps which do very similar jobs and come in packages that cost the same to make have very different prices?

Could it be that the cheap one is a fake or failed in testing version?
Could that explain why the cheap one does not perform?

 

[sudhir kumar]

have you thought about why the two chipamps which do very similar jobs and come in packages that cost the same to make have very different prices?

Could it be that the cheap one is a fake or failed in testing version?
Could that explain why the cheap one does not perform?

My question is ,What is the price of tda7294 in india ?

 

[AndrewT]

My question is ,What is the price of tda7294 in india ?

why ask when you have a report that the cheap ones do not perform?

 

[rahultvm]

My question is ,What is the price of tda7294 in india ?

friend,I am from trivandrum/kerala,
cost of TDA7294 is 80 ruppies(1.8 us dollar)

 

[rahultvm]

dear friends,thank you for your every reply for my question.
I had try for change bootstrap 220mf/470mf ..., changed other tda 7294...but,still problem continue! poor bass effect! I want very high deep bass, please my dear friends...help me..
which chip is very good for deep bass amp?

once again thank you very much for your every valuable reply
god always stay with you!

regards
rahultvm

 

[alfavinn]

hello
this is my TDA7293 PCB

 

[sudhir kumar]

friend,I am from trivandrum/kerala,
cost of TDA7294 is 80 ruppies(1.8 us dollar)

Thanks...

 

[sudhir kumar]

why ask when you have a report that the cheap ones do not perform?

because according to price i will guess that it is original or fake.

 

[alfavinn]

We have the identical price for the original and fake. I can know it after testing only.

 

[atud]

please can someone help me with both sides of TDA7294 bridge? i mean front and back clearly showing components mounting.
Regds
Jonathan
+237-77-62-77-90

 

[langbam]

Sir, I had build TDA7294 bridge amp(subwoofer), working is good! volume is great!
but,I have problem, very poor bass effect!,punching bass effect is very poor!
I also connect and check tda 2030 x 2 amp... bass of tda 2030 is great! but less o/p power

how to rectifier my problem sir?(how to increase deep bass in tda7294?)
I think, lm3886 is good,
but,lm3886 is very costly in india
tda7294 is very cheap in indian market

please help me sir
I will wait for your reply

you change as picture. Bass is good, medium is low, treble is good

An externally hosted image should be here but it was not working when we last tested it.

 

[barila]

can someone please post an Electronic Circuit of stereo version of this amplifier ??????

 

[barila]

Wire jumper for right channel rail are on the cooper side of pcb, 22k (dash) and smal jumper is only for bridge mode, not connect for stereo.

then why you didn't remove small jumpers from stereo scheme??????

 

[apexaudio]

then why you didn't remove small jumpers from stereo scheme??????

I did remove it, see post #55

 

[nanodocl]

tda7294 in bridge config

Hi, How can I get 400W (200W per channel) with TDA7294? As I understand, only 7293 allows parallel conection to add more power to the output, how you do it with this one?.

 

[Maroof]

Can I use TDA7293 in place of TDA7294 ? Because I have a 35-0-35 ac transformer which is = +/- 49v dc . maximum voltage for TDA7294 is +/-40v.

 

[AndrewT]

Your 35-0-35Vac transformer may give out as high as +-52Vdc.

 

[Maroof]

Your 35-0-35Vac transformer may give out as high as +-52Vdc.

Thanks for correcting me . Is there any chance to operate TDA7293 with +/- 52vdc?

 

[AndrewT]

the spec says +-50Vdc max.

 

[joeyt]

sir apex do you have back side pcb of post no.58?


tnx,
joeyt