help with Qualio-IQ filter

Hi, I really like the look of what you've done, but I'm confused about a couple of things - hope you don't mind me asking.

First, I saw a post you put on the DIY Biamp 6-24 thread a few days ago. It implies you're intending to use an LX mini active crossover between the bass and midrange drivers, and then you're adding a Biamp 6-24 active crossover to the midrange feed, to divide the mid and tweeter. Is that correct?

If so, what is the passive crossover for?

Second, assuming that there is a purpose to the passive crossover, are you saying you designed it using standard calculators, without any measurements or modelling, and haven't prototyped the speakers with cheaper components?
 
Going to listen for a while with the passive. Then Ill listen a while with the active setup. I like having options. Sometimes you feel like a nut, sometimes you don't. I'll eventuality end up with what sounds best to me. If I don't try out different directions, I'll never know.
 
OK. I'm crossing all my fingers and toes for you now, because that's quite a gamble, splashing out on Milflex and Duelund caps for a crossover that hasn't been designed based on measurements of the drivers in the baffle, and without any modelling in advance.

I expect you'll need to make some measurements in order to optimise both active and passive options. It's not easy to do it by ear. Those are nice drivers, and you've done an impressive construction job - it would be a shame not to get the best out of them.
 
Hmm. I got to the second sentence, where he says "speakers are actually quite simple", and realised the guy is (to be blunt) an idiot.

There's pretty much nothing in the document about actual speaker design - it's just tweaking, some of which is more likely to ruin a design than improve it. If you want to understand open baffle speakers, avoid tweakaudio and spend time on LinkwitzLab instead.
 
Ok, that last post was a bit harsh - my apologies. But I see a lot of people posting on here, just getting interested in building speakers, starting out, and nothing causes more grief for them than the idea that it's simple. Because it really isn't.

(Just look at the OP on this thread - he clearly got discouraged, which is a huge shame. But if someone thinks it's going to be easy, spends a chunk of money, then doesn't get good results, they might well throw the towel in rather than dig deeper. It's the idea that it's simple that does the damage.)
 
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here's a very interesting web page on making a Qualio IQ clone:
http://tweakaudio.com/EVS-2/Speaker_building_info.html
I asked him if he was going to complete this project:
My focus is on my open baffle speaker that I am tweaking right now. Qualio just updated their speaker with better parts and bi-amping capability......doing some of the things I suggested before. Of course, there is lots more one can do. Give me a [filtered] if you want to discuss. Audiogon emails are not for serious talks.
 
Hi as my first loudspeaker I am building a "clone" of the qualio-iq speaker.
There are much information about the speaker on their website and from test.



I can't find out where the resistor and one of the capacitors goes. It looks like they site on the midrange

Some pictures of the new and updated filter taken from the website

View attachment 1341480
View attachment 1341481

View attachment 1341475
Other 'real life' photo of the filter;
https://www.whatsbestforum.com/threads/qualio-audio-join-the-wbf-forums.37058/#post-908026