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ebay amp L20 power amplifier | diyAudio
https://www.diyaudio.com/community/threads/ebay-amp-l20-power-amplifier.183309/
2011-07-01 8:25 am. #5. L20 project. I just finished building an amp using the L20 boards with dual Plitron 40-0-40V @ 2.75 amps and 6 x 10K uF capacitors per channel in the power supply. I also used a soft start module and a speaker protection relay board for start-up. I had pipe dreams of using peltier devices which would allow me to get by ...
LJM L20 V9.0 Amplifier | Page 4 | diyAudio
https://www.diyaudio.com/community/threads/ljm-l20-v9-0-amplifier.296749/page-4
The first amp was based on TDA7293 chips and sounds great and extremely detailed. I've just wired the second based on LJM L20 modules and a 500W +/-55V soft switch PSU + 2 x 10mF caps and Alps pot - all in a small case. I think it sounds good but its hard to compare by the time you swap all the cables. It certainly runs cool.
LJM L20 V9.0 Amplifier | Page 2 | diyAudio
https://www.diyaudio.com/community/threads/ljm-l20-v9-0-amplifier.296749/page-2
The L20 V9 is a bargain, but bias is fixed for kit market Back to the build, I modified the circuitry by adding a 50k 25turn pot across the 1k BE resistor of the Vbe multiplier (Q8), so i could fine tune the bias current. It works great, and i tried a lot of different values but settled at...
LJM L20 V9.0 Amplifier | Page 3 | diyAudio
https://www.diyaudio.com/community/threads/ljm-l20-v9-0-amplifier.296749/page-3
ljm l20 9.2 interesting observations as today I re installed my boards after a few months away due to illness and poorer eyesight and have had only light listening via some commercial amps. Initially I thought the standard V9.2 assembled boards were a bit thin sonically especially at the bass end when using Volt/SSspeakers.
DIY L20 SE Stero Audio power amplifier Kit DIY AMP …
https://www.aliexpress.com/item/32793984188.html
Cheap Amplifier, Buy Quality Consumer Electronics Directly from China Suppliers:DIY L20 SE Stero Audio power amplifier Kit DIY AMP A1943 C5200 2 channels Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return.
Review and Measurements of L20.5 Loudspeaker Amp | …
https://www.audiosciencereview.com/forum/index.php?threads/review-and-measurements-of-l20-5-loudspeaker-amp.7531/
introduce the L20.5 amplifier ＆ which was designed for the monitor speaker. This array of power amplifier prototypes started being created in 2003 (maybe more earlier) in Sichuan province of China. The designer paid more attention on scientific data of AP (audio precision),however,it still has some shortcomings--that will be mentioned later.
diyAudio
https://www.diyaudio.com/
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Vorstellung LJM L20.5 Amp [Archiv] - DIY-HIFI-Forum
https://www.diy-hifi-forum.eu/forum/archive/index.php/t-20484.html
"L20.5 by LJM Low THD Amp L20.5 sound accurate, low distortion, it is suit HIEND representative products. Whether level before use, all can be very good. Designed by suit the L series 200 w power amplifier, the use of special CFP output, as well as COSCODE input stage.
Rebuilding 70s DIY power amp : diyaudio
https://www.reddit.com/r/diyaudio/comments/scfybt/rebuilding_70s_diy_power_amp/
LJM L20.5: A/B amp based on Self's Blameless Amplifier and related to the popular L12-2 and L20. Seems nice. No official source, only available in random Chinese shops, likely to receive a shitty knockoff. The Honey Badger: Looks decent, but a bit "weak" considering the power I have available. Also based on Blameless amp. More?
ebay Gainnclone - Too good to be true? [Archive] - The Art ...
https://theartofsound.net/forum/archive/index.php/t-44049.html
I am looking to build and LJM amplifier, which one did you like best? Thank you, David. Hi David , I do like both the L25D ( Class D copy of IRAUDAMP7 ) and the L20 ( Class AB ) . The former being quite clinical and the latter a little warmer .
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