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Class D Switching Power Amplifiers and Power D/A conversion

Class D 75W 700kHz
Class D 75W 700kHz
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Old 17th October 2019, 12:42 PM   #11
zhu2015 is offline zhu2015  China
diyAudio Member
Join Date: Aug 2016
Originally Posted by doctormord View Post
At which point this is DIY without any more informations, photos or schematics?
The 4x4.5-inch active column uses two 75W class D amplifiers.

The 4x4 "active column uses a 75W class D amplifier.

The power supply can work at ac85v-ac265v 50Hz 60Hz

I have worked steadily for more than 2 years since DIY.

No fans, no radiators.
Attached Images
File Type: jpg 75W.jpg (57.9 KB, 103 views)
File Type: jpg 4X4.5寸有源音柱模块.jpg (71.9 KB, 101 views)
File Type: jpg 4X4.5寸有源音柱内部.jpg (181.4 KB, 101 views)
File Type: jpg 4X4寸有源音柱.jpg (834.8 KB, 91 views)
File Type: jpg 4X4寸有源音柱外观.jpg (444.9 KB, 87 views)
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Old 17th October 2019, 05:18 PM   #12
voltwide is offline voltwide  Ireland
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Join Date: Jan 2010
As long as you refuse to share any knowledge there will be little interest in your contributions.
tuby or not tuby, that is here the question!
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Old 17th October 2019, 05:34 PM   #13
Khron is offline Khron  Finland
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Join Date: Jul 2005
Location: Finland
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If the point of this is only to brag, or sell these things, there's a more appropriate sub-forum for that:
Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans
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Old 19th October 2019, 11:51 PM   #14
Turbowatch2 is offline Turbowatch2  Germany
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Join Date: Aug 2013
Location: Northern germany
I donīt see the point to show such a primitive construction any school kid could do on a week end, out of cheap, crappy China parts. This is a HIFI forum, not an advertising space.
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