TDA2030A Power Amplifier

Matthewong · 5th August 2005, 04:51 PM

Recently I've built a TDA 2030A power amplifier. The sound quality is very good, solid bass, good mid and good high. But I'm facing a problem, it can't go loud enough. When I try to turn up the volume, the sound get distorted. Maybe the power isn't enough. Does anyone has an idea how to make it more powerful, other than bridge?

Netlist · 5th August 2005, 05:06 PM

Well, the TDA2030A seems to deliver 18W in 4ohm, so if your speakers are not very sensitive I guess you'll have to DIY yourself a more powerful amp. (Other than bridging

)

Apart from a gainclone you might consider a nice classA amp like the ones build over at the Passlabs forum.

/Hugo

Readme.txt · 6th August 2005, 12:09 PM

Are you running a single or split supply? I have built a single supply TDA2030 amplifier module. I noticed that at +12V and lower supply voltage the module distorted if I turned the volume up. At higher voltages the amp was sounding nice even at high volumes!

Matthewong · 6th August 2005, 03:41 PM

I used split voltage and use a transformer with 12v-0v-12v, when it converted to DC, it becoming +16v - 0v - -16v. Is it enough for TDA2030A?

Matthewong · 6th August 2005, 04:04 PM

Btw, does any I.C with more power than the TDA2030A, I mean I.C with five pins like the TDA 2030A?

forr · 6th August 2005, 04:15 PM

A guy on a french forum just said the same. The TAD2030 is one of the best IC power amps. Event better than the 3880. Just lacking a bit of power.

~~~~~~ Forr

§§§

DC Dave · 6th August 2005, 04:25 PM

Quote:

Originally posted by Matthewong
Btw, does any I.C with more power than the TDA2030A, I mean I.C with five pins like the TDA 2030A?

The lm1875 has the same pinout as the 2030A. And it can handle +-30 volts into an 8ohm load, compared to +-22 for the 2030A. Won't give you much more power but it would be easy to swap in to compare.

Nasse · 6th August 2005, 04:43 PM

I have seen circuits that utilise 2030 and the output power is helped with two power transistors, class B but the chip supplies the oomph at low volume settings, something like this http://www.kemo-electronic.com/pdf/b086/b086.pdf

But dunno if it ruins sound quality and maybe it is just better use 3886 or 3785, or more efficient speaker. Maybe you could add a subwoofer with powerful amp to your system and get some stress off the mains speakers and more total loudness

mik · 6th August 2005, 05:44 PM

You can always use it like audio driver with power transistors for more power.

megajocke · 7th August 2005, 06:05 PM

I built a 2-channel amp with TDA2030. It was a bit unstable and would oscillate but only with heavy loads or high volume. It sounded very, very bad. Rerouting the wiring fixed it.

Have you built it on a PCB or did you use wires? Any photos?

5th August 2005, 04:51 PM	#1
Matthewong diyAudio Member Join Date: Jun 2005 Location: KL	TDA2030A Power Amplifier Recently I've built a TDA 2030A power amplifier. The sound quality is very good, solid bass, good mid and good high. But I'm facing a problem, it can't go loud enough. When I try to turn up the volume, the sound get distorted. Maybe the power isn't enough. Does anyone has an idea how to make it more powerful, other than bridge?

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5th August 2005, 05:06 PM	#2
Netlist diyAudio Moderator Join Date: Jan 2003	Well, the TDA2030A seems to deliver 18W in 4ohm, so if your speakers are not very sensitive I guess you'll have to DIY yourself a more powerful amp. (Other than bridging ) Apart from a gainclone you might consider a nice classA amp like the ones build over at the Passlabs forum. /Hugo

6th August 2005, 12:09 PM	#3
Readme.txt diyAudio Member Join Date: Aug 2003 Location: Skåne	Are you running a single or split supply? I have built a single supply TDA2030 amplifier module. I noticed that at +12V and lower supply voltage the module distorted if I turned the volume up. At higher voltages the amp was sounding nice even at high volumes!

6th August 2005, 03:41 PM	#4
Matthewong diyAudio Member Join Date: Jun 2005 Location: KL	I used split voltage and use a transformer with 12v-0v-12v, when it converted to DC, it becoming +16v - 0v - -16v. Is it enough for TDA2030A?

6th August 2005, 04:04 PM	#5
Matthewong diyAudio Member Join Date: Jun 2005 Location: KL	Btw, does any I.C with more power than the TDA2030A, I mean I.C with five pins like the TDA 2030A?

6th August 2005, 04:15 PM	#6
forr diyAudio Member Join Date: Dec 2004 Location: Next door	A guy on a french forum just said the same. The TAD2030 is one of the best IC power amps. Event better than the 3880. Just lacking a bit of power. ~~~~~~ Forr §§§

6th August 2005, 04:43 PM	#8
Nasse diyAudio Member Join Date: May 2004 Location: Scandinavia	I have seen circuits that utilise 2030 and the output power is helped with two power transistors, class B but the chip supplies the oomph at low volume settings, something like this http://www.kemo-electronic.com/pdf/b086/b086.pdf But dunno if it ruins sound quality and maybe it is just better use 3886 or 3785, or more efficient speaker. Maybe you could add a subwoofer with powerful amp to your system and get some stress off the mains speakers and more total loudness

7th August 2005, 06:05 PM	#10
megajocke diyAudio Member Join Date: Jan 2003 Location: Solna	I built a 2-channel amp with TDA2030. It was a bit unstable and would oscillate but only with heavy loads or high volume. It sounded very, very bad. Rerouting the wiring fixed it. Have you built it on a PCB or did you use wires? Any photos?

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