THE IMPORTANCE OF TIME DOMAIN RESPONSE MUST READ

Hey @Holmz - Not sure teh link- / context of what you are referring to.

Personally for home use I am not religious about active vs. passive crossovers. Anyone who has used a subwoofers has already at least dabbled in active filtering.

The biggest technical superiority of active speakers is power efficiency, something you need most in large venues. At home, simplicity matters a great deal to me. My main speakers are custom built, passive crossovers.  I'm thinking of making a high end center, which would be 3-way, active. 

DSP vs. Analog - With any speaker you have to make a crossover which, when added to your speaker's response, sums to an ideal end-result.  DSP based solutions really are the easiest, and add the ability to time align the drivers.

I like my stereo.  Mytek DAC, Luxman Integrated, 2-way stand mounts.  For me to go fully active I'd give up a great deal and add complexity.  Not willing to make that trip from here. That doesn't mean I'm averse to the idea overall.

@perkri 

Here's a good blog post explaining the differences.   You can also use a free simulator like XSim to experiment without actually building anything.

https://www.tubecad.com/2017/11/blog0402.htm

Also here:

I was going by the links and what he wrote about his crossovers. I’d be curious what purpose a cap would serve in a crossover beyond protecting the tweeter. Unless it’s being used in a Zobel network on the woofer?

@perkri 

Caps and coils are fundamental to creating high and low pass filters. Here’s a post I wrote a long time ago that may help you, though it covers the more common parallel crossovers:

I know nothing about Fritz, and any patents or licensing involved, but patent reviewers are not omniscient or even domain experts. It is not that hard to patent BS or to create a patent which is a duplicate of another patent just reworded.

I will not help my competitors gain an advantage and put my status at risk.

For you to have competitors you would have to be a professional speaker maker.

For you to attack other speaker makers without being willing to show example of your work and how your designs differ is simply crass. I know of no speaker manufacturer who wouldn’t immediately jump at the chance to highlight their technology or approach as a distinguishing feature.

And I know of no speaker manufacturer whose products are so secret  they don't advertise them.  🤣

@perkri

I’ve spoken to him a few times, he has my phone number and sometimes calls me out of the blue. My recollection from our discussions is that he’s never said he doesn’t use caps, but that because they are not in series with the tweeter he doesn’t have to use boutique caps the same way and can spend the bulk of the money on the drivers. On his site I found this line:

Series crossover without any capacitor or resistor in the circuit with the tweeter.

He isn’t saying no capacitor at all. :) He has _never_ said to me he doesn’t use caps.

BTW, Fritz are some of the very few 2-way speakers I can always recommend unconditionally.

PS - He's a super nice guy, feel free to call him and ask him if I'm mistaken.

@perkri

Fritz doesn’t use capacitors in his crossovers.

Sorry but I believe you misread his statements. Fritz doesn’t use caps in SERIES with the tweeter. He uses caps though. Fritz famously uses series crossovers, which are quite rare in our world. Still uses a cap but it is in parallel with the woofer (or something like that).

99% of all speakers I’ve ever seen or heard use parallel crossovers, which have first order components in series with the drivers. This includes famously time coherent speakers from Vandersteen and Thiel.

Best,

Erik

Its not just about getting them to know how wrong they are. Its about getting them to design speakers correctly. Audiophiles spend millions of dollars on high end speakers. It is a multi million dollar industry. We deserve better quality.

Kenjit, your entire history here from as far as I can remember has been throwing aspersions on speaker manufacturers, designers and DIYers with vague and unprovable statements and absolutely no specific example of how to do things better, or even what you’ve heard which sounds better or worse. Remember the month you spent arguing that there was no need to markup parts? Or the thread where you said you took apart a speaker and saw it had a bunch of parts in it you did not understand? Hilarious.

I dare you to hold up a single specific example anyone else could replicate or go listen to as better or worse than what you are suggesting. Somehow you never do, you just show up talking trash, in this case such general trash you are denigrating speaker makers as a class in their entirety.

Based in absolutely nothing:

Speaker designers ignore or downplay the importance of TIME. Why?

Kenjit, whi has never designed a speaker, would like all of the professional designers to know how wrong they are.  Again.

😂