TDA7462 2.1 audio amplifier

yugaja · 7th June 2006, 03:17 PM

TDA7462 2.1 Audio amplifier

Finally I finished this project ( well almost

problem with case... ). It is 2.1 audio amplifier built around TDA7462D SGS audio processor chip. I used TDA7294 for sub amplifier, and 2xLM1875 for satellites. The MCU is ATMEL 89c55wd (8051 with 20Kbytes flash memory).
I have a few pictures in very low resolution, sorry!

sub.zip

-_nando-_ · 8th June 2006, 04:31 AM

This is NICE.

abhayk82 · 28th December 2006, 01:58 PM

the zip file is not opening , i am trying to build a 2.1 system with exact specs for the amp , need help with configuring tda7462 parameters , not sure if the subwoofer output is filtered and if the fc can be changed ,

yugaja · 9th January 2007, 11:43 AM

OK this is the link to the Serbian HI-FI forum (sorry!!).

http://www.hifi-forumi.com/forum/vie...hlight=sub2005

I will upload some more quality pics later... Anyway, the project isn't completed jet

(mechanic#$#@$#)

The subwoofer output can be filtered and you have two fc (I think 90Hz and 115Hz...)

Some measurement results:

http://galeb.etf.bg.ac.yu/~gaja/treble%20_LP.png

http://galeb.etf.bg.ac.yu/~gaja/treble_dw_10KHz.png

http://galeb.etf.bg.ac.yu/~gaja/treble_up_10KHz.png

http://galeb.etf.bg.ac.yu/~gaja/trebleCF.png

http://galeb.etf.bg.ac.yu/~gaja/tda7462d_mon_out.htm

superman21 · 10th January 2007, 09:48 AM

Very nice stuff!!!

abhayk82 · 11th January 2007, 11:39 AM

thnx for the link , thai is really good , i am planin to build pc interface for 7462 control ,

sexya · 27th June 2007, 05:19 PM

i am workin on some thing similar butmy board is nt as compact as yours some how.. bu t i have have used a TDA7439... and TDA7265 on the same board.. and 89s52... with a JOG wheel.. and a few buttons.. but my problem is the transformer rating can you help with it... how much current 3 amps total or 4.5amps total

abhayk82 · 28th June 2007, 07:11 AM

ru planing for a torroid or EnI trns ? how much current 3 amps total or 4.5amps total , what exactly u mean by that

sexya · 28th June 2007, 11:15 AM

Yeah thats what i know i need a 25volt ac center tapped transformer but how much current as the peak out put current is limited at 4.5 amps. And also if i go for a Tori... How much will it cost and how much expense for e.i. Core. Where are you from bombay or some place else

7th June 2006, 03:17 PM	#1
yugaja diyAudio Member Join Date: Dec 2005 Location: BG	TDA7462 2.1 audio amplifier TDA7462 2.1 Audio amplifier Finally I finished this project ( well almost problem with case... ). It is 2.1 audio amplifier built around TDA7462D SGS audio processor chip. I used TDA7294 for sub amplifier, and 2xLM1875 for satellites. The MCU is ATMEL 89c55wd (8051 with 20Kbytes flash memory). I have a few pictures in very low resolution, sorry! sub.zip

27th June 2007, 05:19 PM	#7
sexya diyAudio Member Join Date: Jun 2007 Location: Bombay/India	some thing similar i am workin on some thing similar butmy board is nt as compact as yours some how.. bu t i have have used a TDA7439... and TDA7265 on the same board.. and 89s52... with a JOG wheel.. and a few buttons.. but my problem is the transformer rating can you help with it... how much current 3 amps total or 4.5amps total

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8th June 2006, 04:31 AM	#2
-_nando-_ diyAudio Member Join Date: Dec 2005 Location: Sao Paulo	This is NICE.

28th December 2006, 01:58 PM	#3
abhayk82 diyAudio Member Join Date: Dec 2006	the zip file is not opening , i am trying to build a 2.1 system with exact specs for the amp , need help with configuring tda7462 parameters , not sure if the subwoofer output is filtered and if the fc can be changed ,

9th January 2007, 11:43 AM	#4
yugaja diyAudio Member Join Date: Dec 2005 Location: BG	OK this is the link to the Serbian HI-FI forum (sorry!!). http://www.hifi-forumi.com/forum/vie...hlight=sub2005 I will upload some more quality pics later... Anyway, the project isn't completed jet (mechanic#$#@$#) The subwoofer output can be filtered and you have two fc (I think 90Hz and 115Hz...) Some measurement results: http://galeb.etf.bg.ac.yu/~gaja/treble%20_LP.png http://galeb.etf.bg.ac.yu/~gaja/treble_dw_10KHz.png http://galeb.etf.bg.ac.yu/~gaja/treble_up_10KHz.png http://galeb.etf.bg.ac.yu/~gaja/trebleCF.png http://galeb.etf.bg.ac.yu/~gaja/tda7462d_mon_out.htm

10th January 2007, 09:48 AM	#5
superman21 diyAudio Member Join Date: Nov 2005	Very nice stuff!!!

11th January 2007, 11:39 AM	#6
abhayk82 diyAudio Member Join Date: Dec 2006	thnx for the link , thai is really good , i am planin to build pc interface for 7462 control ,

28th June 2007, 07:11 AM	#8
abhayk82 diyAudio Member Join Date: Dec 2006	ru planing for a torroid or EnI trns ? how much current 3 amps total or 4.5amps total , what exactly u mean by that

28th June 2007, 11:15 AM	#9
sexya diyAudio Member Join Date: Jun 2007 Location: Bombay/India	Yeah thats what i know i need a 25volt ac center tapped transformer but how much current as the peak out put current is limited at 4.5 amps. And also if i go for a Tori... How much will it cost and how much expense for e.i. Core. Where are you from bombay or some place else

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