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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.

I'm more to incline to think its a b stock manufacturing that didn't pass. Which when Shure was in the US, they relabeled their B-stock and sold it to Realistic/Radio Shack. Because that style of manufacturing of finish on the threads, it would be coated and the threads cut, then later...

You do have a point with this as most are 5-12V internally set by a zener inside. But as far as building mic preamps, I think people should ditch the phantom circuit all together as its a point of loss. But this user I guess is trying to power a mixing board channel strip. Which could be easily...

maybe a different approach with a zener diode like what the old TAB modules had. Considering voltage regulators will not have headroom. The other logical approach would be a boost converter on the +15 V.

It really makes me wonder if someone is counterfeiting or if the CCP confiscates a manufacturing lot from a factory or distributor in China and the CCP is dumping it to upset the market. I know they do this to some who don't put 'made in China' on their products they manufacture there but...

To give you a serious answer, its the arc formed when mechanically switching. A suppression condenser, which that is the long name for it, is a constantly charged capacitor that lowers the potential voltage where the two points break contact.

Problem that I can see the OP needs to use a bigger transformer because 36V rectified to 50VDC is only going to leave 2V of headroom on the regulator so the only regulators that would work would be LDO types but I think all of them in the input voltage range are surface mount now these days. I'm...

Never had any issue with using 32 ohm AKG and 60 ohm Sony headphones, but I noticed my 250 ohm do have more bass to them, but the DT880 are semi-open back so they are going to have more bass naturally. 100 ohms might come from the output op amp's specification. So it might be able to drive a...

They were designed to be used as a headphone amp. I use them patched as mono and use a single aux send. But what you wanted to do has to be done with either a mixer or an interface that has a mixer before conversion and so far that info is not provided what interface is used.

I heard of people trying that out. But what I have seen them settle on is resonate head live and without when recording. Another interesting one is a resonate head tom with a a half dozen or so cotton balls in them.