TDA7293 as subwoofer amp ?

Tekko · 20th July 2005, 12:04 PM

Hello!

These IC´s, could they be used as a subwoofer amplifier ? I found a site with a schematic and decription of three of these paralelled so i was thinking of paralelling four to make it more symmetric.

What do you think ?

drbobee · 20th July 2005, 01:17 PM

Hello!

Good idea. The caracteristics of this IC are good for this job, but no use them 3 or more SIMPLY parralel !

So: take 4 chip combined parralel and bridgged mode.
Like this.

Bye.

Tekko · 20th July 2005, 01:47 PM

Cannot be done. The sub has two 4 ohm drivers so either 4 of these in paralell to drive 2 ohm or 2x2 to drive 2x4 ohms, 1x400 watts or 2x200 watts.

Tekko · 21st July 2005, 02:09 PM

Now i have bought these ICs, 10 on ebay for £3 each. i hope they arrive next week so i can begin.

Nordic · 15th January 2006, 07:12 PM

Got a broken Yamaha SW105 sub today, and guess what is inside... output side seems powered by a 100W transistor.

sagarverma · 17th January 2006, 01:33 PM

the datasheet tell about paralleling several chips.see it,it got all.

Tekko · 19th January 2006, 04:42 PM

Hum an old thread woken alive

If you don´t know already these ICs ended as the main amp in my stuff.

20th July 2005, 12:04 PM	#1
Tekko diyAudio Member Join Date: Jan 2005	TDA7293 as subwoofer amp ? Hello! These IC´s, could they be used as a subwoofer amplifier ? I found a site with a schematic and decription of three of these paralelled so i was thinking of paralelling four to make it more symmetric. What do you think ?

17th January 2006, 01:33 PM	#6
sagarverma diyAudio Member Join Date: Feb 2005 Location: NEW DELHI	the datasheet tell about paralleling several chips.see it,it got all. __________________ Never Underestimate The Bandwidth of A Station Wagon Full Of Magnetic Tapes Hurtling Down The Highway...................Andrew S Tanenbaum

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20th July 2005, 01:17 PM	#2
drbobee diyAudio Member Join Date: Jul 2005 Location: Sioagard	Hello! Good idea. The caracteristics of this IC are good for this job, but no use them 3 or more SIMPLY parralel ! So: take 4 chip combined parralel and bridgged mode. Like this. Bye.

20th July 2005, 01:47 PM	#3
Tekko diyAudio Member Join Date: Jan 2005	Cannot be done. The sub has two 4 ohm drivers so either 4 of these in paralell to drive 2 ohm or 2x2 to drive 2x4 ohms, 1x400 watts or 2x200 watts.

21st July 2005, 02:09 PM	#4
Tekko diyAudio Member Join Date: Jan 2005	Now i have bought these ICs, 10 on ebay for £3 each. i hope they arrive next week so i can begin.

15th January 2006, 07:12 PM	#5
Nordic diyAudio Member Join Date: Sep 2005	Got a broken Yamaha SW105 sub today, and guess what is inside... output side seems powered by a 100W transistor.

19th January 2006, 04:42 PM	#7
Tekko diyAudio Member Join Date: Jan 2005	Hum an old thread woken alive If you don´t know already these ICs ended as the main amp in my stuff.

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