![]() ![]() It could be in the preamp - for some circuits the output from the two halves of a 12AX7 in V1 can go into distortion with a guitar signal. ![]() What I was trying to get at with my previous suggestion is where the distortion is originating. I had great success in reducing the fizziness of my own amp by substituting a 12AT7 for a 12AX7 in the phase inverter, but the circuit in my Orange Tiny Terror is totally different.ĭbb - It seems you have things under control now. Curiously, the other half of V2 works in the tone control circuit, so a substitution may have other effects, too. I see that the designers of your amp avoided the pitfalls mentioned in the web description, fortunately, but swapping this tube V2 might still be useful. ![]() Yours is a cathodyne phase inverter, described here, along with some of its possible distortions: Sometimes the phase inverter is a source of distortion at high volumes. These things are a bit unpredictable, but I'm glad it worked for you if you don't mind the overall decrease in output power.ĭid you try the 12AU7 swap for the other two 12AX7s in the amp? It might be possible to get a clean tone at higher volume if this is a goal for you. Lowering the gain of the preamp will lower the signal voltages into the following stages, so it is a sensible way to reduce distortion that might occur later in the amp. Dbb - This 12AU7 substitution sounds like a good trick. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |