Re: Active Filter to Amplifier TDA2030


martin griffith wrote:
On 6 Apr 2007 22:47:49 -0700, in sci.electronics.design
chauny.vq@xxxxxxxxx wrote:

Hello people,

I made one filter board for low pass, band pass and high pass, it
wooks well. Then i made one amplifier circuit with TDA2030 for
subwoofer, midrange and tweeter. For midrange and tweeter i use one IC
TDA2030, but for subwoofer i use two TDA2030, The board wooks well
also. I connect two boards together, i can not receive good signal
from output of amplifier board. When i connect the every output of
filter board to low input of amplifier, the output of amplifier is
distortion, but i connect the every output of filter to mid and high
input of amplifier i can recieve good signal from output. one more
thing, i connect mid and high output of filter board to amplifier at
the same time, the output of amplifier is distortion.

Do anybody know what i am wrong?

Thank you.
How are you connecting the two tda2030s together for the subwoofer

If you post your circuit on a photo site, it would be helpful (for
example flckr)

Thank for your reply, i follow figure17 page 6 of data*** tda2030
http://www.ortodoxism.ro/datasheets/stmicroelectronics/1458.pdf

I connect midrandge output of filter to input of amplifier, the
midrange ouput of amplifier is good. i let it, then i connect high
output of filter to input of amplifier more, the good midrange output
change, it becomes bad. i use 4 tda2030 IC amplifier board:one for
high, one for midrange and 2 for subwoofer. Do you know the reason
why?
Thank you!


martin

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