luna5

I use op-amps in electric guitar effects pedals in conjunction with transistors to create overdrive, distortion and other musical effects. My knowledge is limited technically but I learning through practical experience. I have come across an unusual circuit that I Canaletto sense of: the parts that are confusing are 2 diodes in series and 2 transistors in series the weird par to me is that one of the transistors is a NPN and the other is a PNP. I am trying to follow the input which seems to go through the opamp, then the diodes and then the transistors. Of course there are resistors and capacitors in the circuit it I think I understand their functions.

First question, is there a an actual line chart which shows the difference between all styles. What is the difference on decibles before distortion kicks in? Second, I have a drummer who has a board which he runs his drums through, amplifying the sound even more. I currently run 600 watts and find it's still not enough!! I know crazy!! I find a lot of distortation especially when I am using active basses. What do you think of using DC power amps? Small light weight, but I am still not convinced that it can hold up with a clean sound at those levels. What is your experience with them?

I am having huge difficulty with op amp circuit used in TA7642 radios, I cannot figure out how to attach the lm301 chip to have a gain of more than 200 (10 u cap between pin 1 and 😎 if I give it too much signal in 50 k ohm pot then the radio just makes a farting noise. My problem is that I need to figure out which lowpass or highpass filtrations between the speaker pin 5 and the 470 n capacitor and which resistors I need to reduce the hissing noises without any distortion or clipping when I try to make it louder

I need to clarify something regarding buying a amp, normally I am playing classical guitar also singing with backing tracks, which kind of amp should I buy for my purpose? And is it should be at least 50 w? If you can explain this thing it's a great help for me to buy a good amp😋

When I was in college in the early 1970’s, I purchased an Ampeg VT-22 combo amp (same head as the Ampeg V4). This was a 100w amp that actually put out over 130w, it was way underrated for its power. This amp sounded great at volume 4, but it was so loud in my bedroom that it knocked lamps off of my dresser, so I can tell you first hand on the benefits of a smaller amp. What I did like about the Ampeg is that I could smell the cooking tubes as the sound hit me, and chords seemed to have distinctive smells to them. There’s nothing like the smell of overdriven vacuum tubes. Today I have a 15w Jet City, and a pair of 2.5/5w Ampeg GVT5-110’s. Both of these are tube amps. I’m curious what you think about the Fender Super Champ XL for home use, it’s very affordable?

I have one of TPA3116 Turn-On Thumps for long time, powered with a15v 2 amp power, it works just fine, but the bluetooth worked before only with a 12v power, I tried with a 24v as well, and after turn it on and off for a while, it kinda works, but just for a while. Is there any way I can fix that? or is there any way I can turn on and off the bluetooth when I want to use it? I've been using the output hooked up in my tv, but it would be nice to have the bluetooth function as well! and a Last thing, is there any way to custom these unit to receive to inputs? Best! Thanks!

I connected an amplifier board (TPA3116D2) and an mp3 decoder to the same 12vcc source and there is a noise in the loudspeaker. If the decoder and the amplifier board are connected to separate sources, the noise will disappear. Do you kndeow what you could do to connect them both to the same source without having the noise? Thank you.