Replacing Panoramic Potentiometers On Subwoofer

[SunnyOctopus]

Probably both crossovers are too low in order. Try setting both to 60 Hz and cascade them and see if that helps.

What do you mean by cascade them? D;

*is slow*

 

[TLS Guy]

What do you mean by cascade them? D;

*is slow*

I mean setting both the computer and sub crossovers to 60 Hz. If they both happen to be second order, by setting both they will cascade and you will have a fourth order filter.

 

[SunnyOctopus]

I mean setting both the computer and sub crossovers to 60 Hz. If they both happen to be second order, by setting both they will cascade and you will have a fourth order filter.

Oh, I've tried that before, but I did again because you told me, and the result was the same. ;[

THE GOGGLES, THEY DO NOTHING!

 

[TLS Guy]

Oh, I've tried that before, but I did again because you told me, and the result was the same. ;[

THE GOGGLES, THEY DO NOTHING!

Get an spl meter. Play some test tones with only the sub connected and graph the spl versus frequency and we can see if your crossovers work or not.

If you used the same pot for the volume and crossover, then the frequency markings on the sub are probably way off.

 

[SunnyOctopus]

Get an spl meter. Play some test tones with only the sub connected and graph the spl versus frequency and we can see if your crossovers work or not.

If you used the same pot for the volume and crossover, then the frequency markings on the sub are probably way off.

Crossover on computer set to:80hz
Crossover on sub set to: 150hz

25HZ: 75db
40HZ: 79db
80hz: 92db
125hz: 85db
160hz: 85
200hz: 66

I used these pots:
Audio: http://mouser.com/ProductDetail/Alpha-Taiwan/RV16AF-20-15K-A100K-3/?qs=sGAEpiMZZMtxdMMi52izyrpDTjSuu24QxmWGP6LoHR8=
Linear: http://mouser.com/ProductDetail/BI-Technologies/P160KN-0QC15B100K/?qs=sGAEpiMZZMtxdMMi52izymYtaBZtzHPXO1R83NqsUoo=

 

[SunnyOctopus]

UPDATE!: If I don't touch sound redirection feature on my soundcard and do it through foobar2000, the sub does not play above the set crossover.

Edit: Wait...yes it does... >_>

 

[TLS Guy]

Crossover on computer set to:80hz
Crossover on sub set to: 150hz

25HZ: 75db
40HZ: 79db
80hz: 92db
125hz: 85db
160hz: 85
200hz: 66

I used these pots:
Audio: http://mouser.com/ProductDetail/Alpha-Taiwan/RV16AF-20-15K-A100K-3/?qs=sGAEpiMZZMtxdMMi52izyrpDTjSuu24QxmWGP6LoHR8=
Linear: http://mouser.com/ProductDetail/BI-Technologies/P160KN-0QC15B100K/?qs=sGAEpiMZZMtxdMMi52izymYtaBZtzHPXO1R83NqsUoo=

You used the correct pots.

I can tell your computer crossover is only first order 6 db per octave low pass, so that crossover will have significant output to 480 Hz with a setting at 80 Hz.

Now set your computer and the sub crossover to 60 or 80 Hz and repeat the measurements.

Better still do a set with the computer crossover off as well and the sub set to 60 or 80 Hz, then I can tell you the slope of your sub crossover, and the cascaded slopes. If your sub crossover is only second order, then your max slope is third order. Subs should really have 24 db fourth order slopes.