Ultra compact mid/high

Nooice....

Tidy 

KWB75 wrote: Cheers - to be honest I was hoping to go down the non-measurement route as I don’t own a mic of any sort. But, would you say it’s an easier process for a first time crossover builder to follow? My main issue here is time, I’d like to get this finished by the end of the month if possible.

A passable measurement microphone is £40, and the software to take the measurements is free (REW) as is the best tool for developing crossovers, active or passive (VituixCAD). The latter even has a step by step guide to getting set up, plus preset ‘blocks’ for common filter types and an optimiser that will help you find suitable component values to hit a target acoustic transfer function.

Even if you don’t get a microphone, VituixCAD has a built-in tool for tracing the manufacturer’s published magnitude and impedance plots for each driver. It won’t be right since the box loading dictates a lot of stuff, but it’s better than nowt - especially for a beginner. You can tweak the value of a resistor with your mouse wheel and see the effect on the output in real time, for example.

Bams wrote: The difference between optimized and acceptable is not all that big in non-critical areas of crossing over. measuring is always better but a well calculated  xover using available parameters will propably do the trick for a partyspeaker. did the same thing with zero experience when crossing a 2" to a bullet with quite great results.

Hard disagree, especially for newbies to electronics and the maths to derive suitable filters. The textbook electrical filter response is very rarely what you end up with acoustically. Even if the loudspeaker was purely resistive over the operating range.

It’s even worse when you look at the off axis response from poorly summing crossover slopes. Sadly that is where the majority of listeners are for PA speakers.

I think ‘ignorance is bliss’ plays a part here. In 2022 however, with such amazing tools as the above given away for free (much to the chagrin of the developer’s employers) there’s little excuse not to at least make a few ‘digital prototypes’.

If you genuinely don’t have time for even that, then stick to a proven design or premade cabinet.

Edited by toastyghost - 10 May 2022 at 10:47am

The difference between optimized and acceptable is not all that big in non-critical areas of crossing over. measuring is always better but a well calculated  xover using available parameters will propably do the trick for a partyspeaker. did the same thing with zero experience when crossing a 2" to a bullet with quite great results. 

Cheers - to be honest I was hoping to go down the non-measurement route as I don’t own a mic of any sort.