MOX - active crossover - Page 20 - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

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 2nd April 2004, 10:47 AM   #191
moamps is offline moamps  Croatia
diyAudio Member
 
Join Date: Oct 2002
Location: Croatia
Quote:
Originally posted by promitheus

About the coils, yeah I know those cores but is it a matter of turns only or do you need an LCR meter to be sure?
Hi,

you need LCR meter or scope and some audio generator or some PC-based audio analyzator.

Regards
  Reply With Quote
Old 7th April 2004, 12:52 PM   #192
diyAudio Member
 
JensRasmussen's Avatar
 
Join Date: Jul 2002
Location: Denmark - Jutland
Send a message via ICQ to JensRasmussen Send a message via MSN to JensRasmussen
Default Updated schematics and second layout

Hello all,

I updated the schematics and PCB version for the group.

They can be found as PDF's here:

http://www.delta-audio.com/Active%20filter%20two.htm

Please comment so we can get this thing running

\Jens
  Reply With Quote
Old 7th April 2004, 06:48 PM   #193
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
Nice work Jens. I've traced through the schematics and they look good. I should have time to trace through the PCB tonight.
  Reply With Quote
Old 7th April 2004, 07:12 PM   #194
diyAudio Member
 
Andypairo's Avatar
 
Join Date: Sep 2002
Location: near Milano , Italy
Good job, Jens!
I've seen that your layout uses dual in line sockets (single opamp?) instead of moamps' SIL for the discrete opamp.
This gives the opportunity to use standard opamps, but is left unclear if those who still want to use discrete opamps will have to make their own adapters or if you or tiroth are going to make a suitable layout in order to produce such pcbs also while we are at it.
In the wiki there was also a mention to regulators (Jung type): are you planning to make boards for them also or should we go with the group buys currently in progress?

Cheers

Andrea
  Reply With Quote
Old 7th April 2004, 09:24 PM   #195
diyAudio Member
 
JensRasmussen's Avatar
 
Join Date: Jul 2002
Location: Denmark - Jutland
Send a message via ICQ to JensRasmussen Send a message via MSN to JensRasmussen
Default Stuff

Hi,

The module is made with standard dual op amps and no copy of the Jung regulator is plannede. As for descrete opamps I have no plans for that on this board.

However I'm designing a +- 15V supply to be used with my other filter project.

\Jens
  Reply With Quote
Old 8th April 2004, 07:49 AM   #196
diyAudio Member
 
promitheus's Avatar
 
Join Date: Jan 2001
Location: Germany
I am not sure but I think there is a problem with the PCB pdfs. I see the bottom and above layer the same.
I think you have the same thing there.
  Reply With Quote
Old 8th April 2004, 01:14 PM   #197
diyAudio Member
 
JensRasmussen's Avatar
 
Join Date: Jul 2002
Location: Denmark - Jutland
Send a message via ICQ to JensRasmussen Send a message via MSN to JensRasmussen
Default PDFs

Hello,

I can't find any porblems with the PDFs - do you have different names for the two layers (Top and Bottom)?

If the problem persists I can mail you the files - just mail me and I'll answer ASAP

\Jens
  Reply With Quote
Old 8th April 2004, 02:07 PM   #198
tiroth is offline tiroth  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Pittsburgh, PA, USA
Andrea,

I wouldn't mind doing a layout for the discrete opamps, but I wonder how much interest there would be in a buy. It is expensive to make lots of small boards.

promitheus ,

Are you sure? There is ground fill on both sides...
  Reply With Quote
Old 8th April 2004, 02:13 PM   #199
diyAudio Member
 
Andypairo's Avatar
 
Join Date: Sep 2002
Location: near Milano , Italy
If you see the Wiki there are >150 of these boards "requested" if everyone confirms the interest, but have no clue if they will.

My idea was that it can be nice to have the discrete opamps with PCBs of the same quality of the main PCB, but only if it can be done at a "right" price.

Cheers

Andrea
  Reply With Quote
Old 8th April 2004, 02:33 PM   #200
diyAudio Member
 
JensRasmussen's Avatar
 
Join Date: Jul 2002
Location: Denmark - Jutland
Send a message via ICQ to JensRasmussen Send a message via MSN to JensRasmussen
Default Moving on.....

Hello,

All I'd like to know is weather or not to start cleaning up the schematics and the PCB.

\Jens
  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
active crossover: fir vs iir netchris Everything Else 3 29th July 2008 10:14 AM
Passive crossover into active crossover hahfran Multi-Way 16 10th February 2008 07:16 PM
PA vs DIY active crossover paulspencer Multi-Way 46 27th November 2004 02:25 AM
active crossover aaronboumans Analogue Source 4 31st May 2003 05:59 PM
XVR1 active crossover, discrete active stage promitheus Pass Labs 18 22nd July 2002 02:29 AM


New To Site? Need Help?

All times are GMT. The time now is 09:01 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