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Class D Switching Power Amplifiers and Power D/A conversion

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Old 12th July 2013, 04:46 PM   #751
maxw is offline maxw  United Kingdom
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Quote:
Originally Posted by packman View Post
Thanks Maxw, if you pls give me the seller's id i thanks you
thewholesaleposco2009 | eBay
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Old 12th July 2013, 05:02 PM   #752
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Hi guys.

This is a TA2020 amp with 2 extra 3300uf caps and jantzen input caps that i made recently. It is in a glass jar with a enamel spray painted metal cover. I am very with the result. What do you guys think?

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Old 12th July 2013, 05:44 PM   #753
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nice idea , but looks like it will have thermal problems..
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Old 12th July 2013, 07:53 PM   #754
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i thought about that too. so far it stays very cool though. i don't think the ta2020 gets really hot.
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Old 15th July 2013, 08:36 PM   #755
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Super Amplifier Hi-Fi Stereo Bull3t Ultimate
2x 125W RMS 4 Ohms
2x Inputs
Integrated Meanwell PSU, Hi-End Bivolt Full-Range
Bluetooth receiver w/ integrated Hi-Fi Wolfson DAC
aptX® audio decoding: The highest Bluetooth stereo audio quality possible

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Old 17th July 2013, 06:31 PM   #756
Nisbeth is offline Nisbeth  Denmark
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My old TA3020-amp:

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More pics in the blog

/U.
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Old 18th July 2013, 12:36 AM   #757
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My Class-D subwoofer amplifier housed in a small case.

Using +-65VDC rails with 500VA transformer. I conducted sine wave power measurement and the results were 306W into 4 ohms, and 490W at 2 ohms resistive load (clean sine wave before clipping).

Power supply rails sagged from its original +-65DC to only +-51VDC when drawing 490W.

Video of Hoods Run Down intro bass line
JBL GT5-12 Powered by JLAmp1000D Class-D Amplifier - YouTube
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File Type: jpg 9283213422_7d51647e35_z.jpg (169.4 KB, 400 views)
File Type: jpg 9280428431_ec3b3e2437_z.jpg (162.0 KB, 440 views)
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Last edited by jlester87; 18th July 2013 at 12:53 AM.
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Old 18th July 2013, 07:29 PM   #758
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Hello, I'm new here.
It’s great to see everyone’s photos of their DIY projects.

Here are a couple of my class D projects.

Testing a Lapai 2020 to see how it sounds before bypassing the tone circuitry and upgrading the inductors.

http://photos.smugmug.com/photos/i-R...MG_3597-XL.jpg

http://photos.smugmug.com/photos/i-h...MG_3599-XL.jpg

A YuanJing TA2020 board installed in a shadow box from Aaron Brothers.
I often use this box to test components and various amp and preamp modules, both tube and solid state.
Here I have it set up to be switchable so that it can be used as an integrated amp or as a purely passive preamp. It houses a 25K TKD stepped attenuator and Cardas & WBT input/output hardware.

http://photos.smugmug.com/photos/i-f...001.jpg-XL.jpg

http://photos.smugmug.com/photos/i-J...0%20002-XL.jpg














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Old 18th July 2013, 08:42 PM   #759
redjr is offline redjr  United States
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Nice.
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Old 22nd July 2013, 06:48 PM   #760
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Default My Hypex UcD2K Mono-Amp.

Hello,

Here are my two Hypex UcD2K Mono-Amplifier.

Sound is Fantastic.

Greeting

Michael
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