Elekit TU-8600 amp kit mods for use with NX-Tremes

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Rock Ball

Elekit TU-8600 amp kit mods for use with NX-Tremes
« on: 22 Jul 2020, 07:16 pm »
Several of you have built the TU-8600 300B amp kit, and report that it works well with the NX-Tremes and NX-Oticas, including Danny.

Danny, what mods did you do to yours?

Danny Richie

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Re: Elekit TU-8600 amp kit mods for use with NX-Tremes
« Reply #1 on: 25 Jul 2020, 03:21 pm »
I bought mine already assembled. I then went through it and made a few updates.

1. I wired the inputs straight to the boards with some OCC wire, and by-passed the volume pot and board traces.
2. I removed the binding posts and replaced them with tube connectors.
3. I replaced the input caps with Miflex Copper foil caps.

It also had a little hum to it when I got it. It is dead quiet now.

Rock Ball

Re: Elekit TU-8600 amp kit mods for use with NX-Tremes
« Reply #2 on: 30 Jul 2020, 02:45 pm »
Danny, the solder that you included with my speaker kits was very easy to use.  You said it was a very good quality.  Do you suggest using that to build the amp kit?  What brand and type of solder is it?

mlundy57

Re: Elekit TU-8600 amp kit mods for use with NX-Tremes
« Reply #3 on: 30 Jul 2020, 05:58 pm »
I use Cardas Quadeutetic solder. It helps a novice like me avoid cold solder joints.

Jon L

Re: Elekit TU-8600 amp kit mods for use with NX-Tremes
« Reply #4 on: 30 Jul 2020, 06:26 pm »
3. I replaced the input caps with Miflex Copper foil caps.

0.22 uF Miflex coppers fit under the board?  When I did a dry run fitting with Miflex, it looked like there would be zero space between the cap and chassis, i.e. cap would be rubbing on the chassis..

Danny Richie

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Re: Elekit TU-8600 amp kit mods for use with NX-Tremes
« Reply #5 on: 30 Jul 2020, 07:03 pm »
Danny, the solder that you included with my speaker kits was very easy to use.  You said it was a very good quality.  Do you suggest using that to build the amp kit?  What brand and type of solder is it?

I get it from Erse. I don't recall which variation off the top of my head.

Danny Richie

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Re: Elekit TU-8600 amp kit mods for use with NX-Tremes
« Reply #6 on: 30 Jul 2020, 07:04 pm »
0.22 uF Miflex coppers fit under the board?  When I did a dry run fitting with Miflex, it looked like there would be zero space between the cap and chassis, i.e. cap would be rubbing on the chassis..

They fit.