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Chip Amps Amplifiers based on integrated circuits

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Old 28th August 2006, 10:51 PM   #1
Kraken is offline Kraken  Europe
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Question A car amp question

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.
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Old 29th August 2006, 03:39 AM   #2
Leolabs is offline Leolabs  Malaysia
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in term of cost effective,the TDA7560 is a winner here.
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Old 29th August 2006, 08:21 AM   #3
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Default 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
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Old 29th August 2006, 11:55 AM   #4
elaar is offline elaar  United Kingdom
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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
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Old 29th August 2006, 04:56 PM   #5
Kraken is offline Kraken  Europe
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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?
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Old 30th August 2006, 05:12 AM   #6
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Default 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
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Old 30th August 2006, 08:32 AM   #7
mateo88 is offline mateo88  United States
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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.
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Old 31st August 2006, 02:29 PM   #8
Kraken is offline Kraken  Europe
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Default Re: Preamp

Quote:
Originally posted by gmphadte
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
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