few questions about TDA1554

temp123456 · 28th November 2010, 10:31 AM

Before i start with building a tda1554 amp i want to be sure what i'm doing.

I am working by this shematic:

22 Watt Audio Amplifier

1.Would 12V 1.25A adaptor be enough to power an amp?,i don't want to listen music on max level.
That adaptor powered divoom morro 123 speakers and it was wery loud

2.where to place potentiometer, to control both L and R channels?

3.is it just loud, or very loud?

4.i really cant make a pcb for it,so where can i assamble the circuit?

pra3718 · 28th November 2010, 10:58 AM

TDA1554Q is car amp & can be listen in home environment. The Max power supply is 18V (Single supply). It was my first amp. Total area of car & home is different so it is not very loud in home environment.

Quote:

3.is it just loud, or very loud?

It may be loud when you use efficient speakers and very good power feed.

Attached pcb layout for 2.1 and can be alter to make stereo mode.

pra3718 · 28th November 2010, 11:10 AM

One thing, if you already purchased 1554q and want to build go for something like this.

temp123456 · 28th November 2010, 12:05 PM

well i don't have a 4 way speakers, but i have 2x two way speakers and a big sub woofer.
I like schematic in secound post, and that is 2x11w for speakers, and 22w for sub (2.1), Do you know where to place potentometer?

temp123456 · 2nd December 2010, 06:28 AM

i dont have capacitor C5,i hear a hi freqency sound from speakers after amp running about 10 minutes.Will C5 fix that?

temp123456 · 5th December 2010, 10:51 PM

Heloo? Any body here ?, I would ask some questions

pra3718 · 6th December 2010, 10:16 AM

Build as per schematic don't skip bypass cap, mount chip on bigger heat-sink. The chip should run cool enough to touch with the proper heatsink installed.

pacificblue · 6th December 2010, 10:19 AM

Quote:

Originally Posted by temp123456

Heloo? Any body here ?, I would ask some questions

The pots go before the input (220nF) capacitors. If you build a 2.1 system, they should even go before the active crossover.

You should add C5 anyhow, but it will probably not solve your noise issue.

28th November 2010, 10:31 AM	#1
temp123456 Account disabled at member's request Join Date: Dec 2008	few questions about TDA1554 Before i start with building a tda1554 amp i want to be sure what i'm doing. I am working by this shematic: 22 Watt Audio Amplifier 1.Would 12V 1.25A adaptor be enough to power an amp?,i don't want to listen music on max level. That adaptor powered divoom morro 123 speakers and it was wery loud 2.where to place potentiometer, to control both L and R channels? 3.is it just loud, or very loud? 4.i really cant make a pcb for it,so where can i assamble the circuit?

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28th November 2010, 12:05 PM	#4
temp123456 Account disabled at member's request Join Date: Dec 2008	well i don't have a 4 way speakers, but i have 2x two way speakers and a big sub woofer. I like schematic in secound post, and that is 2x11w for speakers, and 22w for sub (2.1), Do you know where to place potentometer?

2nd December 2010, 06:28 AM	#5
temp123456 Account disabled at member's request Join Date: Dec 2008	i dont have capacitor C5,i hear a hi freqency sound from speakers after amp running about 10 minutes.Will C5 fix that?

5th December 2010, 10:51 PM	#6
temp123456 Account disabled at member's request Join Date: Dec 2008	Heloo? Any body here ?, I would ask some questions

6th December 2010, 10:16 AM	#7
pra3718 diyAudio Member Join Date: Jan 2009	Build as per schematic don't skip bypass cap, mount chip on bigger heat-sink. The chip should run cool enough to touch with the proper heatsink installed.

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