Diy Speakers :Required Low pass filter .

[vardesh]

i have following spkr specs :


Specs :
Specs of Speaker

Max input power : 100w

Sensitivity : 89db/w at 1M

Freq - 50HZ TO 20KHZ

Crossover freq : 5khz,10khz


The tweeter already has capacitor connected i only require low pass filter

 

[doors666]

i have following spkr specs :


Specs :
Specs of Speaker

Max input power : 100w

Sensitivity : 89db/w at 1M

Freq - 50HZ TO 20KHZ

Crossover freq : 5khz,10khz


The tweeter already has capacitor connected i only require low pass filter

could you please be specific as to what is it that you are trying to do? the specs show 2 xo points, 5k and 10k, that makes it a 3 way speaker. You are planning to convert a 3 way into a 2way? replacing the woofer and its xo? whats your cabinet size? please post pics.
if you change a driver, there is a good chance that the entire xo needs to be redesigned. If you still want to do it, someone else will need to do this as I have never done it.

 

[Hari Iyer]

Hi,
I have directly connected the woofer to amp , but it not sounding good .Can anyone share a simple diy idea for low pass filter .

For proper design of a cross-over you will need to consider the below points while designing one,


1. Type of enclosure - Sealed, Vented, TL, Horn
2. Size of enclousre - Book-shelf, FS, Satellite spks,
3. Woofer FR curve and its roll-off topology.
4.Tweeter FR curve and its roll-off topology.
5. Acoustic and Electrical roll-off integration.
6. Impedance curve of the woofer, Tweeter and its linear range area.
7. Off-axis response (30 deg) of the woofer and tweeter and its integration.
8.Response of the woofer and Tweeter at the cross-over point.
9. Phase response of the drivers at cross-over point.
10. Phase plot of the driver in the entire FR of the speaker system.
11. Resonance of the tweeter and its corresponding cross-over point for the tweeter.
12. The order of the filter (1st, 2nd, 3rd, 4th).
13. Phasing of the filters vis-a-vis order of the filter.
14. Compensation networks (zobel, Series resonance, Parallel Notch and L-pad attenuation, Baffle Step Comepsation).
15. dB loss of the BSC circuit and the low pass filter and the corresponding compensation for the tweeter
16. SPL of the woofer and tweeter and its mean response from the FR curve.
18. Inductor wire guage (SWG) used and the series resistance attenuation of the inductor.
19. Type of capacitors (Polyster, Non-Polar)
20. Type of resistors (carbon, wirewond) and its power dissipation


Dont expect a over the shelf cross-over to sound good with you drivers. Cross-over design techniques are very complex and never can a standard over the shelff cross-over suit your purpose. If you are looking for one designed and tested then PM me.

Cheers,

 

[vardesh]

Hi,
I havesend a pm to u .