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Jolida FX10 mods
Jolida FX10 mods
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Old 20th May 2016, 06:55 PM   #1
rellik is offline rellik  United States
Join Date: Oct 2005
Default Jolida FX10 mods

Jolida fx10 modifications.

Have already installed mur840 soft recovery diodes. Am installing upgraded grid regulators, soft recovery diodes for the microprocessor and finally reconfiguring feedback gain stage stability capacitors. Using J&J tubes.

B+ and B- are being modified as below:

Nichon Gold Tune and Solen capacitors along with ASC capacitors. Values chosen for resonance LPF cutoff frequencies into 9~10 ohms. Kiwame bleed resistors used along with metalized polystyrene clamp capacitors.

Nichon capacitors arranged in series to increase voltage rating. Solen glued together using JB weld. These are immersed in shore 40 urethane gel. Solen capacitors shielded with high platinum content gypsum gravel slurry.

ASC Capacitors to be covered in athletic tape, coated in silicone rtv, then casted into high platinum content plaster of paris to be located external to amp.

Gypsum gravel slurry, plaster of paris and tin cured urethane gel can be purchased at utrecht art supply stores.

Photos of completed work:

Last edited by rellik; 20th May 2016 at 06:57 PM.
Old 20th May 2016, 07:13 PM   #2
rellik is offline rellik  United States
Join Date: Oct 2005
Photos included. The solen shield interiors mimic the dc metro mcphearson sq station. Inside the center is a serge lutens bell jar filled with canola oil. Notice how evenly and strongly the stopper emits the flash regardless of how it is off center. I have to further inspect the image but I dont think the flash made it to the top left corner.
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File Type: jpg 20160520_135916.jpg (459.7 KB, 216 views)
File Type: jpg 20160520_135652.jpg (584.3 KB, 209 views)
File Type: jpg 20160520_140022.jpg (332.1 KB, 204 views)

Last edited by rellik; 20th May 2016 at 07:17 PM.
Old 21st May 2016, 08:40 AM   #3
rellik is offline rellik  United States
Join Date: Oct 2005
Photos. Filled the tank, added more wires, gelled the ASC capacitors.
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File Type: jpg 20160521_043156.jpg (434.6 KB, 178 views)
File Type: jpg 20160521_043334.jpg (284.6 KB, 172 views)
Old 21st May 2016, 09:44 AM   #4
DF96 is offline DF96  England
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Is this some sort of art installation?
Old 21st May 2016, 01:19 PM   #5
ballpencil is offline ballpencil  Indonesia
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So.. no chance of troubleshooting later?

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Old 21st May 2016, 08:18 PM   #6
rellik is offline rellik  United States
Join Date: Oct 2005
I dont get it, its a bunch of capacitors. Whats there to troubleshoot especially if they have been reading corect values throughout the process.

Lets highlight the benefit of adding the gel, look at the center in the last set of images. The tank was able to absorb all but the low infared where my cell phone camera is most sensitive. The ball of light is absorbed into the bell jar then released into the nichon capacitors, this ball then travels upwards to the intercrossed tines of the solens where it proceeds to roll through the tunnels back and forth in a semicircular fashion and dissipate.

If the gel and planned arangement is such a ready recpetor of of light then it should have no trouble absorbing and nullifing varations on my B+ and B- tube supplies.

The benefit of the get is that it is non conducting but increases the dielectric constant of the tank. Thus any energy not disipated by the capacitor groupings should be released at significantly higher wavelength before it exits the chamber. This limits the noise released back into the system in impulse and feedback fashion. As well keeping continous noise out of the system will reduce the impact of frequency locked capacitor degredation. This is where a capacitor forms a ripple in its surface and is unable to further filter that/those frequencies.
Old 21st May 2016, 09:03 PM   #7
SY is offline SY  United States
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Jolida FX10 mods
I feel something pulling on my leg.
"You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is."
Old 21st May 2016, 09:38 PM   #8
rellik is offline rellik  United States
Join Date: Oct 2005
Hmm, im pretty sure that the legs of the solens were straight at some point. I believe that the lower left of the unrotated image is nearest to the bathtub drain. This is the corner where the power cord will enter.

Upon double checking, I believe it to be caused by light defraction causing the camera to mislocate the leg curvature when impacted by the flash. The legs are rotated to my eyes but seem to be paralell in each solen grouping. Then again the glue is still wet.

Regardless due to the nature of the urethane gel, the process of applying energy should impact the chain linking and bonding thus liquifing it again to be linked by the tin again.

Hopefully it remains a solid when the tape is removed. The original lid for the jolida fx10 has vent slots located along the outer edges which now form the bottom of the chamber.
Old 21st May 2016, 10:47 PM   #9
rellik is offline rellik  United States
Join Date: Oct 2005
The ASC capacitors are quite intense as well. When speaking towards the top while holding them in my hands, my ability to speak slowly dissapears.

I believe this is due to them depolarizing the nerves in my vocal tract.

Surprisingly they dont even have bleeder resistors and small clamp capacitors instaled yet.
Old 22nd May 2016, 12:29 AM   #10
ballpencil is offline ballpencil  Indonesia
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Join Date: Nov 2013
ASC caps do that. That's how you tell they're genuine and still working. Since you're already holding the cellphone camera (best tweaking tool, better than scopes), take some time to take more pictures on just one of the pins. Either pin will do. This will help to improve polarity and allow the dielectric to absorb some IR without being nullified. You will hear less hum and more sound stage as the actual intrinsic capacitance value increases as it becomes more and more polarized.

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