Tube Amp Archive

So, this is what I found. I managed to count the gain with https://www.ampbooks.com/mobile/amplifier-calculators/output-impedance/calculator/ where the calculator calculates a triode amplifier's unloaded voltage gain (the gain without being connected to the next stage) and output impedance based on ...

Why do you need an amp calculator? By simple inspection approximate gain is 20x, 10x and 66x (won't happen), you figure the attenuation and shelving frequencies... But what for? Me thinks this preamp is one of the worst sounding ever, absolutely no soul. I'll take "Let's help write a uni paper for ...

I don't think he's frustrated at all. I think it pleases him that YOU are frustrated. Nice judgment you have there, lad. :mrgreen: TL;DR: You need to understand why you're not "fitting in with this forum's concepts" First I'm the forum Admin and Moderator and tasked with keeping the forums 'on task...

sluckey wrote: ↑Mon Oct 10, 2022 3:51 pm I don't think he's frustrated at all. I think it pleases him that YOU are frustrated.

Nice judgment you have there, lad.

I just want to calculate the gain of each stages in Carvin Quad X's channel 4 by using Preamp Gain and Output Impedance calculator https://www.ampbooks.com/mobile/amplifier-calculators/output-impedance/calculator/ . I don't know how to find the value of power supply because Carvin Quad X is a stand...

Do you yet fully understand how the power supply works that would be needed to power that or any gain stage / power amp circuit? I ask because that would be the place to start in terms of educating yourself before you even think about understanding a circuit, no less possibly modding a circuit for ...

R = resistor. C = capacitor I say this not to criticize you personally, but to give you the blunt facts. You do not understand electronics well enough to understand the answers you will get. Without even a minimal education in electronic, you will not learn from the answers. These questions and ans...

Image below is some of the part of the preamp of Carvin Quad X.
What are those in orange circles?

@thinkingchicken: Just like gain is not distortion, sustain is not gain. Sustain comes from the net balance of energy into and out of the string, if it's real sustain. There are fake sustain methods, generally used in pedals. Let's start with a vibrating string, and reverse the question. When you p...

I’ve read and interacted with all the conversations on every forum you’ve posted on. It’s clear that you don’t have the capacity to understand. Case in point is the lack of realizing that sustain through a pedal is different than the feedback generated from the interaction of vibration between the ...

No!!! Enough Already!!! What’s it going to take to get this through your thick skull? You’re just like some people that won’t do their own homework. I’m finished Please everyone, stop feeding this codependent relationship. Wean him from the tit! Make him sleep in the crib! Everything he needs is av...

IThis theoretical gain number has little meaning to tech people but can serve as an indication of just how fuzzy sounding an amp is. The higher the number, the fuzzier the sound. (Not necessarily related to louder, more power.) And that's something that non-tech people can relate to and compare amp...

I think that db number is simply the sum of the theoretical gain of each stage minus the loss of each voltage divider, tone stack etc. For example, four cascade gain stages each having a gain of 32db would have a theoretical gain of 128db. But you have two -6db voltage dividers between stages and a...

The irony of all of this is that "high gain or distortion amps" in regard to the pre amps have less actual gain than a clean amp. Compare a diode clipped "Jose" mod clamped down to 12v to a SVT. Never thought of the SVT as high gain, but looking at the dB thru the amp it is greater than the "high g...

I'm quite sure they calculate potential voltage gain at 1 kHz. They might have even had a test input signal to scope against the output signal instead of relying on calculation. No, they don't consider non-linear operation. Pretty much the concept I have - in vain - tried to ardeously explain in se...