"Parallel Bridged TDA2030"

Al1B · 21st July 2011, 02:05 PM

ive already made a bridged amplifier with tda2030A
totally for two channels i've used 4 of the chip and within a -18/+18 supply with 4A.

on every channel i could get almost a 28W on 4ohm speakers...

I am wondering, If i can combine 2 bridged boards and make a mono output amp?

is there anyway i can get a clear output sound out of it ?

eccdbb · 22nd July 2011, 03:55 AM

You could get a PSU with more current output for more overhead. 1 chip can eat 3.5A already...

abraxalito · 22nd July 2011, 03:59 AM

I have a paralleled bridged TDA2030A design on my blog - http://www.diyaudio.com/forums/blogs...s-part-ii.html

eccdbb · 22nd July 2011, 04:10 AM

Did you set the gain = 2 for the 3886?

abraxalito · 22nd July 2011, 04:24 AM

That design uses TDA2030As because they're cheap, not 3886s which cost shed-loads of money relatively speaking. But yes, the gain is set at -2 (inverting) for those ICs.

eccdbb · 22nd July 2011, 04:33 AM

Maybe you should do a quick voltage sweep and look for where clipping happens. Also measure the power supply current output at the same time. 28w into 4ohms implies 2.6v, using the 4A supply.

Alternatively, try powering only 1ch and see how loud you can get.

Al1B · 23rd July 2011, 12:54 AM

Quote:

Originally Posted by abraxalito

I have a paralleled bridged TDA2030A design on my blog - http://www.diyaudio.com/forums/blogs...s-part-ii.html

thank you abraxalito, your schematic was really helpful..
ill post my pcb after designing.

Al1B · 23rd July 2011, 12:58 AM

actually using the TDA2030A in my amp is not because of it's price,
well just look at my location....
u wont believe me if i tell u, that LM3886 is not available in here
and i found it out after designing a lot of pcbs for it..

Al1B · 9th August 2011, 11:24 PM

at last, i ordered lm3886 chips and got them
so much power and less components....
i wont ever think of TDA2030 again,

21st July 2011, 02:05 PM	#1
Al1B diyAudio Member Join Date: Mar 2010	"Parallel Bridged TDA2030" ive already made a bridged amplifier with tda2030A totally for two channels i've used 4 of the chip and within a -18/+18 supply with 4A. on every channel i could get almost a 28W on 4ohm speakers... I am wondering, If i can combine 2 bridged boards and make a mono output amp? is there anyway i can get a clear output sound out of it ?

22nd July 2011, 03:59 AM	#3
abraxalito diyAudio Member Join Date: Sep 2007 Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though... Blog Entries: 46	I have a paralleled bridged TDA2030A design on my blog - http://www.diyaudio.com/forums/blogs...s-part-ii.html __________________ I think ideas are what you want to get rid of. I don't really like songs with ideas. - Leonard Cohen

22nd July 2011, 04:24 AM	#5
abraxalito diyAudio Member Join Date: Sep 2007 Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though... Blog Entries: 46	That design uses TDA2030As because they're cheap, not 3886s which cost shed-loads of money relatively speaking. But yes, the gain is set at -2 (inverting) for those ICs. __________________ I think ideas are what you want to get rid of. I don't really like songs with ideas. - Leonard Cohen

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22nd July 2011, 03:55 AM	#2
eccdbb diyAudio Member Join Date: May 2011	You could get a PSU with more current output for more overhead. 1 chip can eat 3.5A already...

22nd July 2011, 04:10 AM	#4
eccdbb diyAudio Member Join Date: May 2011	Did you set the gain = 2 for the 3886?

22nd July 2011, 04:33 AM	#6
eccdbb diyAudio Member Join Date: May 2011	Maybe you should do a quick voltage sweep and look for where clipping happens. Also measure the power supply current output at the same time. 28w into 4ohms implies 2.6v, using the 4A supply. Alternatively, try powering only 1ch and see how loud you can get.

23rd July 2011, 12:58 AM	#8
Al1B diyAudio Member Join Date: Mar 2010	actually using the TDA2030A in my amp is not because of it's price, well just look at my location.... u wont believe me if i tell u, that LM3886 is not available in here and i found it out after designing a lot of pcbs for it..

9th August 2011, 11:24 PM	#9
Al1B diyAudio Member Join Date: Mar 2010	at last, i ordered lm3886 chips and got them so much power and less components.... i wont ever think of TDA2030 again,

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