Pre amp for camera - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th August 2008, 04:09 PM   #1
Fouko is offline Fouko  France
diyAudio Member
 
Join Date: Aug 2008
Default Pre amp for camera

Hi to all and thanks a lot for this deep DIY audio forum,

I would like to build something like this unit :
http://www.beachtek.com/dxa4.html

for my camera.

I haven't find any diagram who explain how to do that simply

If anyone have something to show I'm ready.


Fouko
Excuse my french/english
  Reply With Quote
Old 28th August 2008, 02:53 PM   #2
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Hi! Et bienvenu au forum!

It should not be too hard to build a mic preamp like that - just a dual opamp will do. I have seen plans around the web, but can't find any at the moment. (of course)

Does your microphone need power? That's going to make a difference.
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 28th August 2008, 03:54 PM   #3
diyAudio Member
 
leadbelly's Avatar
 
Join Date: Dec 2002
Location: Calgary, Alberta
Dude!

No opamps there, did you read the page?

"Since the adapters are passive devices, they are completely silent and the premium transformers ensure superb audio."

Basically, they are transformer based unbalanced/balanced converters.
__________________
Aerodynamics are for people who can't build engines. Enzo Ferrari
  Reply With Quote
Old 28th August 2008, 04:02 PM   #4
Fouko is offline Fouko  France
diyAudio Member
 
Join Date: Aug 2008
Hi,

Not the mic is a Rode NTG-2 with a 1.5v battery inside. So alim is not need external 48v phantom power.

In the unit I showed you, the Beachtek works without battery too.
  Reply With Quote
Old 28th August 2008, 07:20 PM   #5
diyAudio Member
 
leadbelly's Avatar
 
Join Date: Dec 2002
Location: Calgary, Alberta
You should tell us more what your main goal is. Do you want something that is high performance like the unit you showed, and will be relatively expensive? Or do you just want to do it as cheaply as possible?
__________________
Aerodynamics are for people who can't build engines. Enzo Ferrari
  Reply With Quote
Old 28th August 2008, 09:14 PM   #6
Fouko is offline Fouko  France
diyAudio Member
 
Join Date: Aug 2008
Quote:
Do you want something that is high performance like the unit you showed, and will be relatively expensive?
The unit is expensive, but in fact some people in the past have opened it and put the diagram on the web, today pictures are deleted.

But they said "you can buy each part at a local electronic shop for cheap." They are really disappointed to buy it, even the sound of this unit is really good.
  Reply With Quote
Old 28th August 2008, 09:29 PM   #7
diyAudio Member
 
leadbelly's Avatar
 
Join Date: Dec 2002
Location: Calgary, Alberta
Quote:
Originally posted by Fouko
But they said "you can buy each part at a local electronic shop for cheap." They are really disappointed to buy it, even the sound of this unit is really good.
I have my doubts about that, the device sounds like it uses premium transformers, and you can tell the difference in sound quality between an expensive transformer and a cheap one.

In any case, the interface can be done as simply as using 2 XLR jacks and 1 stereo phono plug and wire, or as complex as you finding 2 line level transformers locally if you really want to try to do something higher end. Which do you want to try?
__________________
Aerodynamics are for people who can't build engines. Enzo Ferrari
  Reply With Quote
Old 28th August 2008, 09:58 PM   #8
Fouko is offline Fouko  France
diyAudio Member
 
Join Date: Aug 2008
Ok your first choice isn't what I search, sure, I can build a simple adaptator on my wire for this.

But your secound choice
Quote:
2 line level transformers locally
seems beter.

I think the Beachtek unit is a passive one, there is non battery inside.
  Reply With Quote
Old 28th August 2008, 10:07 PM   #9
diyAudio Member
 
leadbelly's Avatar
 
Join Date: Dec 2002
Location: Calgary, Alberta
Well, if you already know how to wire up the connectors, then this is the only other piece of the puzzle:

http://jensentransformers.com/as/as002.pdf
__________________
Aerodynamics are for people who can't build engines. Enzo Ferrari
  Reply With Quote
Old 29th August 2008, 12:57 AM   #10
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Quote:
Originally posted by leadbelly
No opamps there, did you read the page?
No - I just looked at the pretty pictures!

Thought it was a mic preamp to line level. There are a lot of those out there for the prosumer cameras.
__________________
Take the Speaker Voltage Test!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY camera flash tade Everything Else 7 10th November 2006 08:08 PM
Fun with my digital camera Mikael Abdellah The Lounge 22 3rd June 2004 04:25 PM
Digita camera help PedroPO Everything Else 9 15th November 2002 08:54 AM


New To Site? Need Help?

All times are GMT. The time now is 09:03 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2