I still have that, sitting in my sound room, although one channel has developed a fault.
Class D would be analog (text on device says "digital")....or is it an FDA? That would be a cool development.
It was an interesting thing to do at the time. Basic concept from National app notes.
Not repeated, but Gordon Holt thought it sounded good...
The "Digital" came from Rene, the graphic and promotional half of Threshold - technically Class D is regarded as analog.
Not repeated, but Gordon Holt thought it sounded good...
The "Digital" came from Rene, the graphic and promotional half of Threshold - technically Class D is regarded as analog.
I'm glad my question was of interest! In reality, I was wondering why by dealing with repairs and having built some prototypes of the aleph project, I found that in my opinion the class D in terms of operational safety has defects! From what I have seen, especially in car audio, I have had several repairs both in the power supply and in the output part! Which in class A does not happen!
I'd like to try to make a class D with the new silicon carbide mosfets! Have you tried to use them?
HI nelson, I am new to the diy audio but not new to who you are🙂 I was wondering when you designed the 555 adcom amp did you manage to save a copy of the schematic? Are those designes open source now or are they still patent protected? I did a few years of electronic engineering and would like to get a hold of the schematics for the amp if i could..do you think the 5200 adcom is better then the 555 or the 555-2, I woul dlike to build an amp with my own designes but use your schmatics as a starting point as its been awhile since Ive used my skills..any help would be appreciated thanks DouglasI still have that, sitting in my sound room, although one channel has developed a fault.
My brother's 1941 Plymouth had a radio worked pure class A.
It sure broke down. Multiple times.
Today's car-amps are built so cheap (even if sold high) that you wonder how they ever worked new. True class A has a minor "reliability advantage" in that any defects are cooked-out real soon. Still that can be the 91th day of a 90-day warranty.
The wait is for car radios with Infineon/Merus MA12070. I can not believe what I hear with this IC as some devices with this IC sound better than my DIY amplifiers. Lighter, smaller, more efficient, no trouble with difficult loads and now also better sound.
