![]() There is also a Tremolo mod that speeds up the Tremolo which I did not do because I like a slow Tremolo. Replace OEM Pan with Accutronics pan # 9EB2C1B. Replaced R18 with a 28K ½ Watt Metal Film Resistor.Īdded a 470K resistor across lugs 1 and 3 of the reverb drive switch. This helps the amp run cooler and more stable. ![]() Jumpered R49 to get more Pre-amp gain on the "Normal" channel.Īdded a permanent 68pf cap to the circuit and replace C12 (220pf) with a 68pf cap to obtain switching from 68pf to 136pf values.Ĭhanged the 100 ohm screen resistors on the output tubes to 470 ohm, and the 1.2k grid resistors to 2.2k. ![]() Top boost channel Mod to tame excessive treble: Replaced R6 & R7 ( 100k Plate Resistors) With Vintage Specs. Here is a list of changes I did to the amp: Click here for more details of the Bohemian Rhapsodyne attenuator. I built an attenuator to use specifically with this amp I call the Bohemian Rhapsodyne to allow me to crank the amp and overdrive the power tubes. It does have a master volume, but you can't get power tube distortion using it. I have a variety of overdrive pedals that sound great with it, including a vintage style Rangemaster with a germanium transistor I built myself. The amp now has a smooth sweet overdrive and also cleans up nicely when I back off on the volume control of the guitar. Lyle will do the mods for you, but I bought the parts and did the mods myself, which consisted of swapping some caps and resistors and other changes to make the AC30CC sound more like a vintage AC30 from the sixties. The tone of the modded AC20CC he described was just what I was looking for. I was on the verge of just selling the amp when I came across some mods published on an Internet forum by a tech named Lyle Caldwell. I didn't really want to spend the huge amount of money for the Celestions and a BM guitar to find out it still wasn't what I was looking for. Everyone says to get "that" tone you had to have the Celestion Blues. To be honest I could not get a usable tone out of this amp and wasn't sure what to do. This AC30CC came with Wharfdale speakers. That thick, creamy overdrive you get when an AC30 is cranked is amazing, and I wanted it, so I bought an AC30CC, otherwise known as the AC30 Custom Classic. His homemade guitar and unique tone are famous throughout the guitar world, and a big part of his tone is the AC30. I prefer the thick, overdriven sound achieved by Brian May of Queen. ![]() I lot of guys use them for that I suppose (Not me!) but originally it was anything but. The AC30 has a reputation for being a clean, jangly amp with "chime". ![]()
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