Fried Mule Thanks for the great feedback and support! Yes, testing is ‘the proof in the pudding’:) But, with some experience or guidance, you can gain more confidence before going to the lab. Selecting an inductor that, at the operating current does not get too hot, then you can approximate the inductance. Say for instance, maybe a power inductor drops 10% with a 30 degree C rise. Looking at curves will help get you there. I’m working on the walk through design steps for the boost converter. I’ll have the component selection with trade offs as part of it. This and the buck converter that I’ll do next will really help get to the right parts the first time around;)

Gector23 Thank you Gector23 - that’s great feedback! I welcome out Russian friends - that’s so great to be able to reach all the way to Russia!

Thanks so much! I appreciate you!

versace885 thank you - I appreciate you!

Adam L thank you Adam!!

Thanks Davi! It does seem like a nice crossover;)

Can you teach me how cross overs works as well how to operate the machine you use to major the crossovers channels snd its resistance?

You bet! I appreciate you!

Thanks - that's true. This is why I use resistive loads for the speaker to show the effect of the crossover - not the speaker.

Thanks for what you do.. what crossover design sw do you recommend? I'm using xsim at the moment but it doesn't update too often..

I usually do it by hand calculations, but I'll find something and do a video;)

Thanks!

not the expensive ones. medium ones

Sorry - I am finishing one more video then I'll finish the work on this one. I've had technical difficulties along with catching the cold (bad cold but not the scary one out there).

The total power rating is 160 Watts, so I think a 4 ohm might be ok if you are not running the power up too high. I’ll power this up and test it with both 4 and 8 ohm loads. Thanks for the great question Deejee!

t lech Analog discovery does look like a fun system. I’ll do a video this week on software that is very low cost or even free.

THE WAY I UNDERSTAND THE ANALOG DISCOVERY IS THAT IT IS MADE FOR PERSONS WHO DON'T HAVE OR,WANT TO BUY ANY LAB EQUIPMENT LIKE FOR THE HOBBY PERSONS, NOT FOR SERIOUS ENGINEERING WORK.

david luther Yes true it’s used in universities all over the country for students to mimic the operation of the expensive lab equipment. Students and Hobbies can’t afford hundred thousand Dollar Tektronix lab scopes and frequency analyzers but hobbyist and most engineers don’t need accuracies that are down to 0.00001% But what I have found out in the EEV blog and audio hobbyist forms the analog discovery is use quite a bit. Speaker builders and amplifier builders and those designing crossovers use it as a regular tool.

I WOULD'T TAKE ANY ADVICE FROM THAT BIGGOTED SNOB EEV.ALL HE DOES IS RAVES AND RANTS.PEOPLE LIKE AND HIS ATTITUDE RUINED THE ELECTRONICS FIELD FOR EVERYONE ELSE.

Thanks for the question Dan. I am impressed with is crossover! I will do more videos on crossovers;)

@@KissAnalog ok thanks they not to good for my dyi speakers they didn’t sound good at all so I have a pair of them. If you know or you would need them let me know I can send out to whoever needs them of course at no charge.

Tokmol Boto That is a great question! What power rating is each one of your speakers?

Great question - thank you! I reverse engineer it as I show how I do this in this video: kzfaq.info/get/bejne/e9-efcx9v7zJgmg.html

@@KissAnalog thanks. My crossover is a little different though. It doesn't have those dual lines traces, just single line that splits it up to positive and negative zones. I have a map of it, but I'm trying to understand the crossover more. I'm getting continuity when I put a lead on the woofer output and touch it to parts of the tweeter circuit and I don't always get continuity on the woofer ckt parts. I found all the the spots that connect to negative because of your other video, thanks! But I only know the postive end for the parts that are right next to the positive outputs. There's four little islands of positive and negative. How do I know which goes to which speaker? I'm having a very hard time reverse engineering this. Thanks for you great videos.

Thanks Larry! Why remove copper? - are you concerned with oxidation? What if the connections are soldered? That adds tin so there is little to no oxidation.

Do you have schematics or any information on them? Did you want to simply replace parts - or change the design?

david luther Hi David - great questions! think it is the current probe that is out at low frequency, but I’ll have to investigate this a bit more. The reason it is impedance is because one probe is voltage and one is current, so for gain it is voltage out divided by voltage input, but here I am taking voltage divided by current so it os ohms or impedance.

Yes, I think they will work OK with speakers of different Ohms. The crossover might be off a bit but probably not noticeable. The efficiency of the speaker might make a bigger difference. Thanks Sam - your english is just fine - I would like to be as good at a second language;)

Kiss Analog Thank you sir for your response and answer my question, i'm happy now.. goodluck for your channel sir..

Seraph Thanks for the great information! These are great leads, and look like a lot of fun! I like Kirby’s videos and his approach. Fun to watch!

Sorry about that. I was trying to show the crossover on its own. I will be testing with speaker drivers to show the difference. I had to find something descent to buy, but not too expensive;)

@@KissAnalog when is the video coming out with this crossover in a real speaker?

This is driving into a known impedance - what is the issue?