Crossovers: 1st Order? Let's get Started!

In this weeks Tech Talk, Danny Richie from GR-Research walks us through 1st order crossovers and opens the door to getting started!
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www.GR-Research.com
Audiocircle: www.audiocircl...

[@treyhorn5645]

Thanks Danny, great info... Have a great week. Appreciate the time... ✌️

[@512bb]

Thanks Danny, I would love to hear these with your crossovers as I have heard these KEFs stock & have no doubt you have brought them to a completely different level.

[@jon1810]

Pure Awesomeness.

[@attainableaudio4533]

Love the way you differentiate the acoustic vs electrical, the average "audiophile" don't realize this, would have love to have seen the stock xo on the Tweeter, looks like the parts I use to prototype crossovers... Lol

[@ianhames2465]

the ferro fluid in these hf units tends to dry out and gum up the voice coil with the pole piece, which causes the 2Khz dominancy. They can be cleaned if dismantled very carefully and the ferro fluid replaced. Personally, I would omit the ferro fluid.

[@chuckwilliams999]

Thanks for the info Danny. I will have to save this video because these are my speakers.

[@HollisAudioLabs]

Glad you discuss the differences between acoustical slopes and electrical crossovers filter orders. It it something that you hear a lot, but not defined, but now is. Also, a pole in the electrical response equates to a filter order, so some folks discuss the number of poles in the crossover slope, that equates to the same number as the filter order. I tend to interchange the two terms.

[@300ZCorradoVR6Z]

Why not show the before and after measurements on the KEF?

[@LovelyKauai]

Yes. Why not. If you make a claim show us the numbers.

[@Mario_Terzi]

In a first order filter, for example for a tweeter, does it matter if the attenuation by a resistor is put before or after the capacitor? Or is it the same?

[@timwilson3435]

Thank you. If you can, please describe what an elliptical filter looks like and how to implement one in the next video.

[@timealchemist7508]

When considering the trade off of between flatter response vs better phase agreement how do you choose? I’m considering one crossover with a +-2dB response that has a wider and shallower phase dip when inverted (not the sharp spike down) and one with a +-3dB with a nice sharp inverted phase spike... is there a rule of thumb here?

[@ianhames2465]

Hello Danny, I just discovered your channel. Just what I am looking for. Question 1 (of many), when measuring the HF of the Kef, what frequency range was applied to the driver, was it pink noise, or dirac pulse, or something else? P.S. I am looking forward to learning from you. Shame I am in Plymouth England. Thank you.

[@ianhames2465]

I have a pair of 150 liter cabinets based on ATC SM150 only I have a dual concentric Tannoy 12" driver and a 6" reflex port to make crossovers for. I have a little knowledge of designing crossovers having downloaded a pdf by Pi Speaker designs, but you know a little knowledge is dangerous. tee hee.

[@inglouriousmofo]

Hi! It's usually a sine wave sweep. Check out Kirby meets audio as he has some crossover videos as well.

[@ianhames2465]

@@inglouriousmofo thank you for your reply. I didn't get a notification from youtube for some reason. I will take a look.

[@andrewmanus5686]

What do you think of d-sonic amps?

[@NickP333]

Hi Danny, and thank you for sharing your knowledge once again with us. I wasnt able to thank you for explaining your DAC to me last week since my iPad upgrade, which f’d everything up. I apologize for no response to you, but your DAC looks really nice. I’m sure the upgrades and mods made it all the better. Anyway, I own a very old pair of spkrs called CS-201’s which were made by Pioneer in 1959. The speakers are still in great working order, are in phenomenal condition to this day, and still perform very well. There’s only 1 single cap going from one spkr to the other horn type spkr as the “crossover” accompanied by a rather large port. There’s a L&R spkr too, which you don’t see too often, but they’re from a time when stereo in the home was still very new. Should I just replace that one cap, or do you believe there’s more that could be done to get the most out of them? Not that it matters, but these guys are pretty big for having just an 8” driver and a 2” horn type spkr above a port. This is unfortunately the only link that shows them in action and the insides. If Thais is too much to ask of you, Danny, I fully understand. Truly. I’d understand. If you’re curious, the link is: kzbin.info/www/bejne/nnWlkmaeg8aDkLc Thanks so very much for another great video, Danny. I truly appreciate your shared knowledge.

[@larrygaines7462]

That looks bad for the price, diy with good components, saves a fortune and a long term love affair with the music produced.

[@larrygaines7462]

Use junk and you get distorted sound

[@Lesterandsons]

Thx, too short.

[@myronhelton4441]

He didnt finish telling that no crossover or a first crossover is the best speakers. Other speakers has to use other crossovers aren't as good. Vandersteen first order crossover speakers are best for the money. Without crossovers, I have some speakers like that that are discontinued. So I dont know what to get. I have some discontinued speakers with 4 inch woofers that sound like big speakers that has the best sound I ever heard. I bet this guy could build these speakers for you. I would also want this guy to build me efficient speakers that are not harsh. Efficient speakers work well with tube amps.