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Just being quite direct that you don't know as much as you think. Just like that idiot in ching chong land that is using black goop not knowing all black pigments are carbon based.

Its been over 20 years since the last real orange drop was made and there are better caps made now as if it really makes a difference in a guitar amp which it wouldn't anyways.

Never seen things float off on a wave solder machine. But the black goop that some have been using was never really intended to be used on circuits. I think you don't know what you are talking about because gluing is a use case scenario.

normally they glue caps so that they don't rattle and break loose from moving the amp around. So I glue them back with clear or white silicone calk.

If you want to because there is nothing special about it.

It doesn't surprise me because guitar manufacturers put in low end/main stream parts in all the time. But for coupling and bypass caps, when you change them there really isn't a better just a different distortion and insertion loss characteristics will be observed. There are other parts in...

What really gets me is that these are very cheap to build to begin with and theirs is probably a surface mount version so its even cheaper (in more ways than one). But they probably didn't screw up the design like Golden Age did which they originally constructed their grounds incorrectly on the PCB.

It is a neat design. But was built with cheap parts. I wondered who really made that circuit considering SP copies designs. The biggest offenders were the electrolytic capacitors and the glass diodes by the tube for the repair I did on one a while back.

Part 1-1: Input Circuits Introduction. The input circuits of the microphone preamp are split into four main circuits to preform the functionality of preparing the signal from the microphone through the various stages of amplification thereafter. These circuits are assembled inline as...

Its very few and far between. Because about 5% of people that work in the electronics field do anything with audio electronics exclusively like that. For the first 12 years as a tech, the only time I dealt with audio publicly is when someone brought in something at the TV repair shop I worked...

Most techs are not musicians and reality there are far and few that can do both much less do both well. I know how to play a few instruments, but I'm not that good at it. Electronics on the other hand, I've done very well over the decades. Had worked in many repair shops and even had my own shop...

Microphone Preamp Design Objectives and Challenges : When someone designs an electronic circuit, they are creating something for a particular purpose. In this case, we are focusing on a circuit that amplifies a signal that comes from a microphone to a suitable level for the next device. The...

Sorry for the pause, I have good news. They will be able to restore most of my sight back after a couple of operations. Which I'm excited to see again and be able to type instead of having someone else type for me. I'll have to check it out. Writing books about this subject is difficult without...

nice. I would like to continue saying things about it today, but I have an appointment with the VA to see if they operate on my eyes so I can see again. Wish me luck.

I wasn't looking for a mic preamp. But if I wanted one I would just build something like a Millennia HV-35P where the input coupling switches from AC coupling with phantom to DC coupling.

Today, I am starting this thread because mic preamp design is a complicated subject. Mainly because the end user frame of reference is way different than the though behind designs. First I will explain the ideal model, then walk through some of the basic designs and methods applying them. The...

In reality, the amplifying devices and the circuit chosen dictate the limitations from the ideal model. I guess I will start a new thread because this is off topic. But please keep it professional. Just because you learned something one way doesn't mean it always going to be taught the same...

Mic preamp design is a complicated subject that should be carried on in a different thread. Mainly because the end user frame of reference is way different than the though behind designs. But Ideally, the source impedance should be 0 ohms while the input impedance of the preamp circuit be infinite.

The extra termination circuit formed by the phantom power feed resistors is negligible compared to the measured non linear losses of the coupling capacitors.

Its one of the reasons why I don't like Shure microphones. Because over time their models changed slightly internally.