What are you relating to I can, t understand. I read Elliot many times in the past 20 years , what are you referring at I use np0 and I use resistors better than 0.1 tolerance with measument. In the - feedback I like presision to last digit from a 100matt. Usully only 5 digits. I could use mouser 0.005 tolerance and 0.2ppm resistors but I think it's a overkill. For equipment tuning it suit better.
If you Don,t like the mains filter I presented and have a better solution feel free to enlighten me.
I read the Elliot article a few months ago so what is your point.
I asked for the fft algoritm block size
And I Don,t know how your information of basic caps that all know and resistors are related in this thread. Please moderator help me if you can or I will put him on block list.
Ok, so It was a guide from you, so your education people by other site on internet.
Good start, but if you would to become a professor in the field you need to read thousands and that includes only a small fraction on on one subject.
Tonza,
I've read every post in this thread, AKSA Lender preamp and all the ALPHA threads which totals approximately 3500 posts. Your tone and aggressiveness by far, sticks out among all the other posts to an overwhelmingly positive nature of these threads. For you to ask the moderators to block Maty T. is ridiculous! Please step back and ponder a bit.
Hello Mati,
thank you for the pointing. I know this article. We´ve already the balance between costs and performance, but I´ll change some capacitors to NPO.
I´m not really satisfied with the VU-METER/FFT ADC to SPI frontend. I still need some braining.
The design is in standby, I need to finish some little helpers boards for my ACA, M2, F6, Mofo amplifiers.
@tonza75
Play Coldplay True Love on your AKSA amplifier and be happy. The sun is shinning all will be good.
Never good to intimidate others.
JP
thank you for the pointing. I know this article. We´ve already the balance between costs and performance, but I´ll change some capacitors to NPO.
I´m not really satisfied with the VU-METER/FFT ADC to SPI frontend. I still need some braining.
The design is in standby, I need to finish some little helpers boards for my ACA, M2, F6, Mofo amplifiers.
@tonza75
Play Coldplay True Love on your AKSA amplifier and be happy. The sun is shinning all will be good.
Never good to intimidate others.
JP
The polystyrene film caps are very very good. The problem is the high temperature. I think they decompose from 70 or 90 degrees, I have to look for it.
630 Volt Polystyrene Audiophile Capacitors - on sale
That is why now they are only used mainly in phonos and to decouple. Also in some preamps. Or low poweramps.
What was a mistake, years ago, was its use in tube amplifiers, with the capacitors very close to the tubes. Always is a bad idea with any cap bad worse with these.
Bypass a cap in the speakers crossover is a very cheap audiophile way to tweak them. I liked so much in my KEF Q100 coaxial speakers (with cheap tweeter cap) that I decide do not to buy a more expensive Jantzen red to substitute the original.
Bruno Petzeys also recommended [PDF] its use in custom buffers for the Hypex NC500 class D modules.
Nord Hypex NC500 custom buffer:
![URL]](/community/proxy.php?image=http%3A%2F%2F%5BURL%5Dhttps%3A%2F%2Fstatic.wixstatic.com%2Fmedia%2Fbee373_e679de6402d24c97be5bf61f548adfff.jpg_srz_1233_764_85_22_0.50_1.20_0.00_jpg_srz%5B%2FURL%5D&hash=653581e32f3136af933d1b6df69d4503)
Nord Hypex NC500 custom buffer:
Hi JPS64,
Were you even considering putting this on TCP/IP and letting us control it via an app on our phones as we are going the way of IOT?
Photon uController by Particle.
Were you even considering putting this on TCP/IP and letting us control it via an app on our phones as we are going the way of IOT?
Photon uController by Particle.
Progress
Hi X,
not really my priority today as you know.
Photon board is nice but has not enough GPIO for this application. I´m using ESP-05 2 cents Chinese COTS board (AI-Thinker ESP8266 ESP-05 WiFi/WLAN Modul - Watterott electronic) with Arduino MICRO with Itead Nextion Display (Nextion HMI Solution - ITEAD Wiki).
I want to use the Blynk App (https://docs.blynk.cc/).
But still to clarify VU-Meter and FFT frontend: I´m finishing a testboard I´m using for ACA amplifier.
I´m right thinking some builders needs seconds delayed loudspeaker connection?
JP
Hi X,
not really my priority today as you know.
Photon board is nice but has not enough GPIO for this application. I´m using ESP-05 2 cents Chinese COTS board (AI-Thinker ESP8266 ESP-05 WiFi/WLAN Modul - Watterott electronic) with Arduino MICRO with Itead Nextion Display (Nextion HMI Solution - ITEAD Wiki).
I want to use the Blynk App (https://docs.blynk.cc/).
But still to clarify VU-Meter and FFT frontend: I´m finishing a testboard I´m using for ACA amplifier.
I´m right thinking some builders needs seconds delayed loudspeaker connection?
JP
Hi JPS64,
Yes, a 5 second (or perhaps setting in uController app) turn on delay would be perfect. So you are putting his on the net! 🙂 Very cool.
Thanks for all your efforts on this super gadget front end for our amps.
X
Yes, a 5 second (or perhaps setting in uController app) turn on delay would be perfect. So you are putting his on the net! 🙂 Very cool.
Thanks for all your efforts on this super gadget front end for our amps.
X
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