Bedroom Sound System

Hello everyone.
I have a xbox and am palnning to get a Digital Cable box in my room and currently I sport a nice 19" Samsung TV but the thing only has like one speaker which totaly sucks when playing my Xbox.Anyway, Instead of buying some kinds of surround sound system I wanted to basicly build a sound hadler system supporting 3 speakers (left, right, center/sub), direct volume control, VU sterio meter and maybe equilizing abilities. Anyway, to amplify the incomming signals I originaly planned to use the Philips TDA1554 AMP chip, but thats like only 22 Watts and I would not mind atleast 50, what I wanted to know is of a good amplifier chip to do this, but the catch is that i need to be able to buy the chip in very low amounts, such as 1 or 2.

Thanks!

Goto **broken link removed** for some of the coolest amplifier designs.

Try using TDA1514A from Philips. 48 Watts @ 8 ohm.
Or, if you want a one-chip solution, you could try TDA7560. It's a car radio amplifier, 4 x 50W @ 4 ohm.

I once built a stereo amplifier for my friend --> 2 x 120 Watts using two TDA7293 ICs; a real monster :wink:

lots of thanks but I've still gotta find a somewhere to buy em!

Philips usualy has links at the bottom of the product description page(s) but allot of the companies are sold out.

TDA7650 & TDA7293 are from ST micro (https://www.st.com)... You can buy these ICs in mostly any store which sells electronic components.

k, thank you.

I'm going to get the ST TDA7256 from:

**broken link removed**

I have the datasheet, if you need it...

no i got it, anyway I changed to this one, with anthor supplier which may be easier to work with:

25 +25W STEREO AMPLIFIER WITH MUTE & ST-BY

**broken link removed**

*Nevermind*

See Below!

Hello Everyone, I have a bit of a problem here.
You see, I am tring to build a Amplifier for my room so I can get better sound out of my things such as my Xbox & Cable Box, Anyway I need a parts list I made up verified to work with the sample schematic provided by STMicroelectronics for the AMP chip i am using, which is the TDA7265 25W STEREO AMP. The sample schematic for a sterio amp setup can be found in the Datasheet which can be found here:
**broken link removed**

Now the problem which brings this up is the fact I don't have much experiance with picking out capacitiators, resistors & such things, so I am asking you for your help. Below is the parts list which I have assembled, please tell me what you think, thank you. I have put it in 'code' format to retain the original structure.



Thanks in Advance!

Hi Paprika.

You don't have to worry about the resistors. Use 1/4W carbon resistors.
For the capacitors, you should buy ones whose operating voltage is 50% larger than the supply volatage (i.e. supply of 25V --> capacitor of 50V). Use polyester caps for 0.1uF, and as for those of 1000uF, I would suggest that you use bigger ones (>2200uF), since their function is to filter current spikes from the supply.

Hope this was helpful.
Let me know how it works :wink: