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Elekit TU-8100 PCL86 integrated amplifier
Elekit TU-8100 PCL86 integrated amplifier
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Old 6th February 2019, 02:45 AM   #11
wjphunt is offline wjphunt  United States
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Join Date: Jan 2014
Location: NJ
Hi . Thanks. I checked the screws as you suggested and it did help. The two tubes now light up for about 20 seconds and the both blink on and off. I do not get any sound. I guess I am getting closer. Any help or suggestions would be greatly appreciated. Thanks
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Old 12th April 2019, 07:36 AM   #12
66deg is offline 66deg  United Kingdom
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Join Date: Apr 2016
Location: Provence
Hi, I have had this kit in my workshop for a few months but have been too busy to get it started, I hope to build it over the summer then maybe pair it up with an F4.
Does anybody know the output voltage and db gain of the TU-8100 as I would like to check if it is a suitable partner for the F4.
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Old 3rd May 2019, 04:34 PM   #13
clafever is offline clafever  United States
diyAudio Member
 
Join Date: Aug 2014
Hello all, I've been looking for a small tube amp to run my ribbon tweeters. The TU8100 might be ideal. I'm using a marchand active crossover and very robust single ended diy amp from a friend 90hz and up. I have set up a 3 way active speaker but have been using passive crossover from the mid-woofer to tweeter. Was going to crossover electronically at around 3500hz.

I was wondering if you all had any thoughts on this idea. Suggestions on the build, mods, or parts that might make it better. I have no problem with executing the build at all I just don't know the engineering side of things. The potentiometer/volume might actually be very useful in matching the ribbon's sensitivity.

Thanks, Chad
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Old 6th May 2019, 01:21 AM   #14
vkung is offline vkung  Canada
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Join Date: May 2005
Location: Vancouver BC Canada
Hi CHad
TU-8100 is designed for full range speaker. It has only 2 W (Class A).
You need to look at TU-8200 (8W or TU-8340 (40W)
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Old 6th May 2019, 01:24 AM   #15
vkung is offline vkung  Canada
diyAudio Member
 
Join Date: May 2005
Location: Vancouver BC Canada
Quote:
Originally Posted by 66deg View Post
Hi, I have had this kit in my workshop for a few months but have been too busy to get it started, I hope to build it over the summer then maybe pair it up with an F4.
Does anybody know the output voltage and db gain of the TU-8100 as I would like to check if it is a suitable partner for the F4.
The db gain spec is in your manual.
output voltage - There is no such info
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Old 6th May 2019, 01:25 AM   #16
vkung is offline vkung  Canada
diyAudio Member
 
Join Date: May 2005
Location: Vancouver BC Canada
Quote:
Originally Posted by wjphunt View Post
Hi . Thanks. I checked the screws as you suggested and it did help. The two tubes now light up for about 20 seconds and the both blink on and off. I do not get any sound. I guess I am getting closer. Any help or suggestions would be greatly appreciated. Thanks
Please email to info@vkmusic.ca. I will help you to fix the amp
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Old 9th June 2019, 09:54 PM   #17
kpsthakur is offline kpsthakur  India
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Join Date: Sep 2016
Location: Delhi
Elekit, Diyaudiostore, thank you bringing out such a wonderful tube amp, simple and sweet...I always wanted to build one, but wanted a headstart, now I begin the learning journey....It took me around 5 hours to build it ground up and only got one slight scare while firing it first time...after 10 seconds,the left Led started blinking, while I was testing offset. I am not sure why and how, the problem disappeared after attaching the test speakers and since then it is singing beautifully. I have only noticed two issues, guess the forum could help understand the reasons why...

1. There is very small but noticable distortion on one channel when there is no audio playing, goes away when music starts playing.
2. The audio signal if fed through front jack sounds higher than while being fed through rear rca jacks... but if you just plug in an empty cable to the front jack while feeding sound through rear input , the rear fed sound also increases, don't think this is normal, but maybe it is by design..
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Old 9th June 2019, 10:17 PM   #18
kpsthakur is offline kpsthakur  India
diyAudio Member
 
Join Date: Sep 2016
Location: Delhi
Few build picsIMG_0205.jpgIMG_0206.jpgIMG_0207.jpgIMG_0209.jpgIMG_0210.jpgIMG_0208.jpgIMG_0211.jpgIMG_0212.jpg1560117598009.jpg
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Old 11th June 2019, 01:23 AM   #19
vkung is offline vkung  Canada
diyAudio Member
 
Join Date: May 2005
Location: Vancouver BC Canada
Here are the suggestions
1. check all your soldering points and check your installation with the manual
2. swap the left and right channel tube.. to eliminate the issue from the tuber..

You amp is abnormal .

YouTube

Last edited by vkung; 11th June 2019 at 01:27 AM.
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Old 19th June 2019, 04:14 PM   #20
66deg is offline 66deg  United Kingdom
diyAudio Member
 
Join Date: Apr 2016
Location: Provence
I have recently finished building my TU 8100 kit and would like to thank Victor for an excellent kit with clear and precise instructions. Like kpsthakur I had a blinking left hand chanel which dissapeared the following day ( not sure why ). This amp is currently being used to drive the MT section of my T Gravsen DTQWT III and even with an X over in the signal path it sounds fantastic, currently, i'm waiting for a pair of Alpair full range drivers to go with this little amp.
@ Victor, I would like to build TU 8600 and use it biamped with my DTQWT III and need to know what the gain in db is for the 8600, I asked previously about the gain info for the 8100 and you replied saying that it was in the instruction manual and after rereading it I can't find it . I guess there maybe a way of working it out but I'm not sure how to do it . It makes matching up the second amp much easier with this info.
Thanks.
@ Kpsthakur, how did you get those PCBs so clean? they look really neat.
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