Hi! I have Edifier s730 2.1 system based on TDA7294, 150W+75W+75W
I want to change the value of high pass filter for satelits, now is around 150hz, i want it from 80 hz
Can someone help me with changing the value of Capacitors and Rezistors , and what rezistors and capacitors to change,to get 80 hz frequency
Please help me guys, i am planning to change satelits and i want a good mid bass for my system.
I want to change the value of high pass filter for satelits, now is around 150hz, i want it from 80 hz
Can someone help me with changing the value of Capacitors and Rezistors , and what rezistors and capacitors to change,to get 80 hz frequency
Please help me guys, i am planning to change satelits and i want a good mid bass for my system.
Attachments
R1 and C1 cause a gradual roll-off below 16 Hz and R2 and C2 make it steeper below 10 Hz, but I don't see any 150 Hz high-pass filter in that schematic fragment.
As mentioned
Looks like power amplifier circuit only.
Highpass filter likely located in another section of preamp
likely opamp stage. Using typical RC filter
or Resistor/ Capacitor
In all simplicity once circuit is found.
And topology observed and calculated.
Current capacitor values would be made larger
to lower filter cutoff.
Unless the highpass is a passive crossover
in the speakers themselves.
Same process, once crossover capacitor and inductor
values are known. Capacitor value increased to lower
filter cutoff.
Looks like power amplifier circuit only.
Highpass filter likely located in another section of preamp
likely opamp stage. Using typical RC filter
or Resistor/ Capacitor
In all simplicity once circuit is found.
And topology observed and calculated.
Current capacitor values would be made larger
to lower filter cutoff.
Unless the highpass is a passive crossover
in the speakers themselves.
Same process, once crossover capacitor and inductor
values are known. Capacitor value increased to lower
filter cutoff.
the original satelits have passive crossover in their case , but now i use another satelits without passive crossover and the frequency on output is also from 150-20000hz no change, and my question is where is the high pass filter? , in plate on subwoofer? i will add some photo of plate of subwoofer
PS:I think on diagram is shown only what suggested value need to be, and on my system are another?
PS:I think on diagram is shown only what suggested value need to be, and on my system are another?
Attachments
I have a question, not really an electronics guy. I am using a Dayton Audio (parts express)100 Hz, L-R, 8 ohm, 2nd order hi-pass filter for a mid woofer, and would like to go to 4th order (24 db slope). Can you put in series 2 of these 12 db ones? A tech guy emailed me this info showing what would happen to the frequency curve. Shows in black line the single 12 db filter, in green a 24 db slope, then in red what happens if two 12 db ones are put in series.
Does this seem correct? Thanks!
Does this seem correct? Thanks!
Attachments
Cascading two second-order Linkwitz-Riley high-pass filters results in a fourth-order high-pass filter that isn't even close to Linkwitz-Riley. Whether you get a bump or just a much too smooth response depends on the type of filter (LC, active, whatever).