A car amp question

[Kraken]

Hello.I am new here and i came here via a google's search.
I like your work here and everyone can learn many things here.
Congrats...
I have a question.I would like to build a (good) car amplifier.
Which chip do you suggest me to use?
I've found these:
-TDA1562Q (Phillips)
-TDA7560 (ST).
But i like also and the LM3875 kit (from Audiosector.com) which is a ready kit with PCB's but is there any good transformer from 12-14,4V to xxV ?(the volts needed to work the LM3875 kit).
Thanks in advance.

 

[Leolabs]

in term of cost effective,the TDA7560 is a winner here.

 

[gmphadte]

DC-Dc converter

For making the power amp from LM3875, u will have to build a DC-DC converter.
Visit bas.elitesecurity.org/

Gajanan Phadte

 

[elaar]

Hi, ESP projects site lists information/circuit to design a pretty good smps for such an application:

http://sound.westhost.com/project89.htm

Personally i'd go that route, otherwise your power output is very limited.

Alex

 

[Kraken]

Thanks for your answers and links.I will go with LM3875 and a DC-DC converter.
But i have a CarPC with Audigy 2 (Creative).
Can i connect them directly from card's output or another circuit (or something else) is needed?

 

[gmphadte]

Preamp

U have to know the output level of your source (the card) and the input signal level required for the amp u will construct. To get the maximum output from this power amp, the input should be equal to or greater than required. If it is greater, the solution is simple. Otherwise a voltage gain circuit (pre amp) will be required.

Gajanan Phadte

 

[mateo88]

http:// bas.elitesecurity.org/


Is there anyone that could kindly point me to a translator capable of translating that site? Looks, like a promising build for me, if I understood Serbian.

 

[Kraken]

Re: Preamp

U have to know the output level of your source (the card) and the input signal level required for the amp u will construct. To get the maximum output from this power amp, the input should be equal to or greater than required. If it is greater, the solution is simple. Otherwise a voltage gain circuit (pre amp) will be required.

Gajanan Phadte

I ordered the components for amp.When is ready i will try it and see if a pre amp is required.
Thanks