Good morning everyone, I'm trying my hand at building an 18" subwoofer with a Faital Pro component, the XL 1800, that works in a sealed box.
To move this subwoofer I will use a Powersoft module with a Loto DSP that has the crossover function inside.
The software called Harmony is very cumbersome and quite difficult to understand (at least for me who doesn't know this software). There are 3 equalizations with filters and slopes, so I think it's enough to choose one to create the filter.
Intuitively I modeled the subwoofer with a slope of 24db starting at 20hz with a high pass, the remaining frequencies are peaking up to 150hz, after which I have the low pass filter at 150hz with a slope of 24db. What I'm asking, are these the right filters to use to make it work correctly? I'll attach an illustrative photo later.
Thanks.
For those who want to take a look at the functions of the DSP I leave the link, the part interested in the development of frequencies and eq. is from section 8-3 onwards
https://www.powersoft.com/wp-content/uploads/user_guide/PS_LOTO_UG.pdf
To move this subwoofer I will use a Powersoft module with a Loto DSP that has the crossover function inside.
The software called Harmony is very cumbersome and quite difficult to understand (at least for me who doesn't know this software). There are 3 equalizations with filters and slopes, so I think it's enough to choose one to create the filter.
Intuitively I modeled the subwoofer with a slope of 24db starting at 20hz with a high pass, the remaining frequencies are peaking up to 150hz, after which I have the low pass filter at 150hz with a slope of 24db. What I'm asking, are these the right filters to use to make it work correctly? I'll attach an illustrative photo later.
Thanks.
For those who want to take a look at the functions of the DSP I leave the link, the part interested in the development of frequencies and eq. is from section 8-3 onwards
https://www.powersoft.com/wp-content/uploads/user_guide/PS_LOTO_UG.pdf
Generally subs aren't allowed to go much above 100hz and even that is more of a pro audio application, in home audio they may be crossed to the mains as low as 60hz. It all depends on what speakers are covering the rest of the spectrum.
I own a pair of Monitor Audio PL 200 home towers. It is a 3-way speaker with a dual 6.5 inch woofer.
Thanks for the advice.
however is it a project that could work well?
also can this DSP replace a physical crossover filter?
Thanks for the advice.
however is it a project that could work well?
also can this DSP replace a physical crossover filter?
Yes is should work very well though you should model the driver in the target enclosure to see what the response looks like, pro drivers are generally not optimized for 20hz operation with an Fs much higher in the 30-40hz range. That doesn't mean it can't be done you just need to understand what processing will be needed, a sealed design may need quite a bit of LF boost to play flat.
Yes and do a much better job, can you imagine the cost of 24dB passive filters with the power ratings needed for this application.
