Topic: Battery Box or Preamp schematics!

[pridix]

Hi!

I'm finishing my studies about Telecommunications Engineering this year and I have a few subjects about electronics and circuits and I wanted to do some real projects about it. As I'm starting taping I'm really curious about sound-related things. As I haven't had nor a battery box or a preamp yet I thought could be great to start my electric projects with something like that. Does anyone have preamp schematics? I want to use it with microphones ended in minijack.

Thank you so much

[LikeASong]

I shamelessly bump this topic asking for the same thing: some schematics of a decent preamp. There's some on the internet but they're whether too simple (for a mono input) or too complicated. I would like to build a simple. ChurchAudio-like stereo preamp.

Thanks in advance!

[hi and lo]

If you're both looking for an educational project, I might recommend starting simple with a CMOY headphone amp. It's not a perfect apples to apples comparison to microphone pre's, but will get you started down the right path.

[pridix]

Thank you so much, hi and lo

[LikeASong]

If you're both looking for an educational project, I might recommend starting simple with a CMOY headphone amp. It's not a perfect apples to apples comparison to microphone pre's, but will get you started down the right path.

Thanks for the suggestion, but I'm not following the educational path. I am proficient with the soldering iron and pretty knowledgable in electronics -if I might say so- , so I would like to build a mic preamp directly, without simple starts. I've done similar things before and they all are working after years of use, so I think I could get decent results building a preamp. It's just that I need a good schematic for it.

[kirk97132]

If you're both looking for an educational project, I might recommend starting simple with a CMOY headphone amp. It's not a perfect apples to apples comparison to microphone pre's, but will get you started down the right path.

Thanks for the suggestion, but I'm not following the educational path. I am proficient with the soldering iron and pretty knowledgable in electronics -if I might say so- , so I would like to build a mic preamp directly, without simple starts. I've done similar things before and they all are working after years of use, so I think I could get decent results building a preamp. It's just that I need a good schematic for it.

http://www.fivefishstudios.com/diy-kits

[hi and lo]

Thanks for the suggestion, but I'm not following the educational path. I am proficient with the soldering iron and pretty knowledgable in electronics -if I might say so- , so I would like to build a mic preamp directly, without simple starts. I've done similar things before and they all are working after years of use, so I think I could get decent results building a preamp. It's just that I need a good schematic for it.

Gotcha... fire up SPICE and design your own circuit then! Kirk poitned out the fivefish stuff which I completely forgot about and there are all kinds of kits for home discrete and tube amplifiers, but you're not gonna find too many published circuits for small 2-channel preamps. Jensen's website might have a few good ones as will some op amp publications.

[DigiGal]

Kirkd pointed out Five Fish Audio kits an excellent choice. 

A Less expensive alternative for a student budget is a kit from PAiA...

http://www.paia.com/phantom.asp

[pridix]

Great!!! Thanks for the answers everyone!

[Church-Audio]

There is no circuits out there. The best way to start is looking at product data specs and sample circuits and start from there. Simple also invest in a bread board. Sprice is nice but reality is better. Some things that work in spice dont work in the real world.


bread board and some parts is where I started I also helps to have some really REALLY smart friends who can help you when you are lost.

Chris

[pridix]

Thanks for the tip Chris, your replies as well as the others are always welcome. I use to do all my projects on a protoboard before doing  them  in a real pcb and soldering. It's a great way to try 

[illconditioned]

The is a Yahoo "group" called "micbuilders".  Lots of folks out there build circuits and also modify mic capsules.

A whole lot of fun/diversions over there.

  Richard