About mechanical mod
The seems, the build and end, the superb specs and above all of the way it made my favourite songs seem set it on top of my list of best audio parts of 2017.
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Within the AC15CC adjust ONLY the R6 resistor. I at first did alter both of those, but the stock worth is best and therefore ought to be left like that. My amp now has the stock worth back in there and only R6 is at 220k.
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I ran my amp for some time with out changing any resistors, as well as amp ran fine, but I do have NOS 1970’s Tesla Hex Plates. I did use JJ’s a tiny bit much too they usually looked as if it would cope as well.
The 12AX7’s don’t must be matched or nearly anything, While lots of people like employing a 12AX7 with balanced halves for V2, the phase inverter. Feel free to experiment with diverse valves to search out your tone.
Also trying an Ecc eighty one ! for “far better headroom”(valve 1) – read about it somwhere and a colleague of mine had a box of tubes..so why not.. I´ll report back again just after Ive tried out it for on a daily basis or two..
I improved the C5 capacitor (470pF) in a10nF capacitor. The amp is now perfectly in harmony. I've now the needed minimal tones. The bass and treble pot are equally in 12 hour posture for the best consequence (Using the Wharfedale speaker).
Mechanical mods unquestionably aren’t for everybody. They have to have much more perform and upkeep than a normal digital box mod. Nonetheless, they may be extremely gratifying and past a life span. Equating mods to vehicles, something like a iStick Pico Mega is sort of a Ford Concentration.
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A different place, Never energy your amp up without having a speaker load connected, you possibility detrimental your amplifier.
hey, this appears to be like excellent. i constantly assumed this amp was to brittle, i don’t possess it i have a vox nighttrain, but this 1 is usually a little to brittle.
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Have done the vox ac15ccmod guidebook. I adopted many of the instructions , and the sole sound I,m getting is a major buzzing sounds? Each of the resistors are the correct values and all solder joints are clean.