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Class D Switching Power Amplifiers and Power D/A conversion

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Old 23rd September 2014, 12:43 PM   #911
skrstic is offline skrstic  Serbia
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Join Date: Oct 2007
Location: Belgrade
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Old 4th October 2014, 04:39 PM   #912
lacro is offline lacro  United States
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Join Date: Jan 2014
Location: Finger Lakes
Stuffed a Sure TPA 3110 2 X 8 W into an Altoids box with a volume pot.

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Old 14th October 2014, 11:25 AM   #913
microbiologycory is offline microbiologycory
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Join Date: Oct 2014
Quote:
Originally Posted by stephane092 View Post
OMG, that's AWESOME! I'm jealous, is this your build? Are you bridging each channel? (using any fans?) With that Anaveiw top piece, I'd be tempted to do a lexan clear plastic top.
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Old 17th October 2014, 01:46 AM   #914
cjkpkg is offline cjkpkg  United States
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Join Date: Aug 2008
Location: Roswell GA
My own micro boombox.

Old arjen helder ta2022 board
Sure Bluetooth module
7Ah SLA battery
Tang Band W3-1053SC 3" Full Range Driver
Box is basically a Planet 10 micro fonken pair built in one piece - there are discreet left and right chambers.

Sounds pretty good, will get broken in good at my daughters softball game this weekend.
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Old 17th October 2014, 06:59 PM   #915
den_hr is offline den_hr  Croatia
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Join Date: Mar 2009
Location: Croatia
Two (i.e. three) variants of the TPA3116 Clas D amp - one (in the black enclosure, middle right) is in a repurposed external HDD enclosure, and the other two (silver ones) are as bought from ebay - and on one of those I've changed the front panel using wood.... I kinda like wood more for the front panel The black box on the bottom right is an external WD hard disk.

The bigger box with the LCD on the lower left is a DIY audio server, running Raspberry Pi + Wolfson audio card (24/192), plus LCD display and a remote sensor (it's controlled either by the remote control via IR, or using a tablet/smartphone and any of the available MPD clients...).
I'm enjoying this combo - the TPA3116 amps are realy nice....
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Old 31st October 2014, 09:48 PM   #916
OpterN is offline OpterN  Finland
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Join Date: Feb 2014
I thought it would be time to show some of my finished projects.
First one is TA2024 and it's my very first audio DIY project. I got the inspiration from here. It was very nice introduction to amp building.

Second one is TPA3116, built using famous Yuan Jing board. "Enclosure" was built using what I happened to have at hand. Next time I will try to find something more appropriate.

Both feature foxy orange led.
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Old 2nd November 2014, 04:53 AM   #917
mhouston is offline mhouston  Australia
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Join Date: Jan 2006
Location: Victoria, Australia
Default Sure Class D 100W power amp

Here is a 100W Class D I put together around the $30 Sure Class D modules. Enclosure is a 2U 19" dampened rack mount. It has two switchable inputs; one with a Alps pot and 4oz solid brass knob for sources which do not have attenuators and one which connects direct to the power module. 10A rec. bridge and 30,000uf of filtering\storage provide 25V to the brd. Solid brass speaker binding posts, heavy gold plated RCAs, silver plated copper wire in the audio path, a power filter and ferite power cord choke round-out the compliment,

I have only had a short chance to listen to the amp quietly on test speakers so hard to comment on performance. But it will come.
Attached Images
File Type: jpg Inside_1.jpg (234.2 KB, 719 views)
File Type: jpg Inside_II.jpg (229.4 KB, 694 views)
File Type: jpg Inside_III.jpg (219.5 KB, 494 views)
File Type: jpg Inside_IV.jpg (185.5 KB, 366 views)
File Type: jpg Rear.jpg (174.1 KB, 398 views)
File Type: jpg Finished.jpg (187.0 KB, 543 views)

Last edited by mhouston; 2nd November 2014 at 05:08 AM.
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Old 3rd December 2014, 12:45 PM   #918
SoundzNice is offline SoundzNice  South Africa
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He He HE............ Curiously Strong..................
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Old 11th December 2014, 12:54 PM   #919
Peter S is offline Peter S  Canada
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Location: Hillsdale, Ontario, Canada
Hello Every one,
Some amazing talent here! I will go back and read every post in this thread, but can I ask a dumb question? I do not have the design knowledge for the above projects but have had some luck with repairs to basic (class A B) amps.
I'm looking for a used amp in the 1000 Wpc range, but highest possible fidelity. Are there any, or is it impractical to look for a class AB amp this big? (power consumption etc.) What about class H or G verses D?

I assume that class AB would have the highest fidelity. I am only buying, not building, but I would like to have more understanding of what I'm getting into.
Thanks, Peter from Canada
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Old 12th December 2014, 08:18 AM   #920
Kjeldsen is offline Kjeldsen  Denmark
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Location: Randers, Denmark
1000W 2 ohm 4 ohm or 8 ohm?

There are many proamps with this power, and they can sound amazing.

Maybe a Crown K2 - don't remember the class though.

http://www.stereotimes.com/amp031302.shtml

Last edited by Kjeldsen; 12th December 2014 at 08:23 AM.
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