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Old 20th January 2010, 11:14 AM   #1
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Join Date: Jan 2010
Default Yarland FV 34CIII


My name is Micke and I am a dealer of Yarland amps here in Sweden!
I have built a couple of speakers in my life and now I would like to modify the small Yarland amp. My thoughts are;

I have been contacted by JB Capacitors China about their new and best capacitor "JFX" and they asked if I wanted to sell/distribute them here.
I want to replace the Claritycap insida the amp with JFX to see what may change in sound. Also, I would like to build an alu/steel front instead of wooden. The small steelplate where the tubes at I would like to change, also (cause of the fun of it) I would like to put the on/off on the rear and terminals (Both lines and speakers) to WBT. Also spike feet instead of the plastic/rubber feet

Any thoughts?

Micke - Just Audio Magic
(Swedish site)
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Old 20th January 2010, 01:14 PM   #2
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Join Date: Jan 2010
My thought are to rebuild the hole "chassi" for the small amp - All in steel/alu, all buttons will be selfmade
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Old 20th January 2010, 07:48 PM   #3
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Join Date: Nov 2007
Location: Nelson, NZ
The FV34C111 shares the same chassis and decorative parts with the Meng Yue Mini that I have. I think the internal design and tubes are the same too (6N2/6P1 tubes). If you could post a pic of the underside with the cover removed I could compare.
The wooden front piece is just a screw-on over the plain black chassis, and the shiny plate under the tubes is a dummy piece that is glued on. Both can be removed without affecting the function of the amp. Spiked feet are also easy to do, because the bottom plate on the chassis unscrews as do the feet. IMO, the power switch would definitely be better off on the back, as it is very close to the low level signal areas of the amp as it is.
I recommend some ventilation of the transformer cover as well, or a complete redesign using stainless steel mesh. Mind you the transformers themselves are not pretty enough to be visible.
The main coupling caps in my amp PCB are Class X2 MKP. Not bad quality from what I have read, so I would be interested in the results if you replace them.
If the circuit design is the same as my Mini, then there are other areas that need improvement before coupling capacitors (see my thread here: Meng Yue Mini schematic?
The little amp has improved dramatically during the course of that thread, and is still undergoing changes.
If I keep mine, I will eventually remove the PCB and point-wire the whole thing.

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Old 20th January 2010, 09:43 PM   #4
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My new thoughts are to replace the hole chassi with a new one!
The new chassi will be homemade with milling etc

Steel/alu - 3 mm bottom and topp, 6-8 mm front, back and sides

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