Upgrading Behringer BCD2000 project, need help/advice - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, 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 June 2009, 02:49 AM   #1
diyAudio Member
 
Join Date: Jun 2009
Default Upgrading Behringer BCD2000 project, need help/advice

So let me introduce you to the project.
I got around to disassembling this "thing" last night. I bought it several years ago for some fun MP3 mixing, I know, I was young.

So when all the parts were laying there in all their nakedness, I decided to take a loupe and take a look at the parts that made it possible for me to enjoy music for the past few years.

The DAC appeared to be a 24 bit DAC, which was a suprise to me. The opamps are of the lowest quality possible said google.

I also have problems with pops when a lightswitch is turned on/off. So the PSU has to be upgraded as well.

My plan is to upgrade the parts (opamps, caps, etc) but to keep the boards.
All opamps (6 total) are from Cool Audio and all caps are from Xunda.

Here are some pics for you to see what's going on:

PSU:
Click the image to open in full size.

Click the image to open in full size.

DAC:
Click the image to open in full size.

Click the image to open in full size.

Front board:
Click the image to open in full size.

Click the image to open in full size.

I already decided to replace all opamps with LME49720's (but if you have a better idea, please let me know!), now I just need your advice on what caps to upgrade and what PSU parts to replace:beerchug:
  Reply With Quote
Old 2nd June 2009, 03:02 PM   #2
diyAudio Member
 
Join Date: Jun 2009
So my goals are:

-Better SQ
-No pops when other electrical devices are turned on/off

Again, any input is appreciated!
  Reply With Quote
Old 30th August 2010, 08:59 PM   #3
diyAudio Member
 
Join Date: Aug 2010
Wow, just the kind of thing I'd love to do.

I made the same choice as you, but still, I think it's a great controller if you know how to squize it, I've made certain number of gigs with it.

I understand the thread's a little old. Did you success?

I'd love to know how you make it (at least the PSU part), because, in my case, instead of pops & clicks the unit freezes so I've to restart it anytime there's a variation with the tension.
  Reply With Quote
Old 15th July 2011, 09:55 PM   #4
diyAudio Member
 
doctormord's Avatar
 
Join Date: Oct 2007
Hi all,

even this topic is rather old i want to share you my experience with the BCD2000.

Actually i changed the output-stage from Cool-Audio V4580 to Burr Brown OPA2277. Even if main params did not changed, the sound is a bit "creamier" and punchier now. (Which means, it is not better but different) This might come from the rather slow slew-rate, which is at 0.8V/s. Max output is at +18dBu @ 1kHz. (Same as the old one)

Even if the OPA2277 has a little more voltage-noise, the THD is less at all. I measured some specs of both opamps and can say, the 4580 is not that bad, even the rest of the design in the Behringer-device...

So changing the opamps wont make it any better, just different. If you like the tuby-kind Burr-Brown-sound, give it a try.

The only strange thing is, why Behringer put the output-stage right on top of their SMPS (PSU).

Cheers,

Chris
  Reply With Quote
Old 15th July 2011, 11:20 PM   #5
diyAudio Member
 
doctormord's Avatar
 
Join Date: Oct 2007
CoolAudio V4580 vs. BB OPA2277. As you can see, OPA2277 does a little bit more output-swing and some "shaping". Both of them got a little DC-Offset at the output, so voltage-rails might not be equal.
Attached Images
File Type: jpg V4580_BB_OPA2277.jpg (72.8 KB, 15 views)
  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
Behringer A500 as a DIY project derouineau Solid State 183 11th December 2014 05:00 AM
Need advice for upgrading an Acurus DIA-100 amp FSHZ:42 Solid State 35 28th March 2012 10:38 PM
Need some advice rebuilding/upgrading 2 power amps. SuperKris Solid State 31 26th May 2009 05:24 AM
Advice on upgrading my car system. Mendis Solid State 3 14th February 2003 11:27 PM


New To Site? Need Help?

All times are GMT. The time now is 11:17 PM.


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