Review of Connexelectronic TA-3020 v3b audio amplifier - Page 7 - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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
Closed Thread
 
Thread Tools Search this Thread
Old 3rd April 2011, 12:56 AM   #61
diyAudio Member
 
Join Date: Feb 2009
Just added a Bulgin 6A mains filter in an IEC socket to replace the standard mains inlet socket. Sounds better still - will be adding more shielding soon, will add pics and comment on sound quality in due course.......

The low mids still sound a bit "fuzzy" to me though.... (Although they are better than before.)

This is it now:

Click the image to open in full size.

Last edited by Richie B; 3rd April 2011 at 01:07 AM. Reason: added pic
 
Old 3rd April 2011, 02:50 AM   #62
diyAudio Member
 
Join Date: Feb 2011
Hi everyone,

Since there has been lots of reference to Connexelectronics in this thread, I thought people might be interested to read a new review of Connexelectronics modules posted eariler today in the below thread:

Photo Gallery

I mention this here because the above new review is in a Photo Gallery thread where it may otherwise not be found by people looking for reviews (it includes a couple of photos also).
 
Old 3rd April 2011, 07:11 AM   #63
v-bro is offline v-bro  Netherlands
diyAudio Member
 
v-bro's Avatar
 
Join Date: May 2006
Quote:
Originally Posted by sgarbialan View Post
sorry v-bro, probably it's my mistake.. but to me this makes no difference.. if the second amplifier sounds better than the first.. as long as I don't hear the hiss from my seat.. I buy the second..
Until the day you buy some horn loaded speakers...trust me, you'll be sorry!

Quote:
Originally Posted by sgarbialan View Post
Again, maybe it's me.. but after Tripath was thrown out of the market, I see developments of switching technologies that are closer to class "D" more than to class "T".. If you have however notices about developments on the "T" class I would be very interested to know.
Well, there are some interesting new technologies, like the AD199x series amplifier chips, they sure do feature good specs...

Oh and since everyone is so interested in proof, here's two comparable resistors:
Low noise thin film:
PANASONIC|ERA6ARW102P|RESISTOR, 1K, 0.05%, 0805, 0.125W | Farnell Nederland

And it's noisy thick film cousin:
PANASONIC|ERJT06J102V|RESISTOR, ANTI PULSE, 0805, 1K | Farnell Nederland

Now look at the resemblance and the price difference!

$20 of parts, don't make me laugh!!
__________________
Max. cone displacement can be several foot on any speaker!Too bad it can be done only once......
 
Old 3rd April 2011, 07:59 AM   #64
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
well, if you expect high quality sound, build high quality amps
might not be so hard

man, if I was to complain about every crappy amp I have built in my life, it would probably make my life miserable

I clearly remember one certain amp blowing
and it was a big and rather expencive build
acttually it went dead twice
and I blamed the designer/supplier

well, thinking about it numerous times, through the years, and learning a bit more
I now know it was probably my own fault
first time I think it may have blown because of a loose supply cap screw
I never forget that spark
really scary
I guess that could have hurt something related to stability
when replacing outputs, I forgot to inspect zobel on output
I suspect a non functioning zobel took it out the second time
a simple stupid mistake

what can i say, it took me more than 5 years to figure that out

remember LYNX amp ?
seems it got a bad reputation, and 'forgotten'
well, what was the problem
what really happened ?
I suspect fake components had been used by a few people
and that was the end of that
 
Old 3rd April 2011, 12:49 PM   #65
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
 
Join Date: Nov 2005
another post removed

guys, time to cool it

you have made your case, very clear
no point in repeating the same thing over and over
we are not deaf
and we do read english ok


moderation
 
Old 3rd April 2011, 01:50 PM   #66
v-bro is offline v-bro  Netherlands
diyAudio Member
 
v-bro's Avatar
 
Join Date: May 2006
Well, I have been making some poor products myself for a few years too, but I can look back upon some amps I've built the past years with a goot feeling in my chest. Some true beauties. Most of them I don't even own any more because someone else had to have them... Those dang audio freaks!!
__________________
Max. cone displacement can be several foot on any speaker!Too bad it can be done only once......
 
Old 4th April 2011, 02:30 PM   #67
von Ah is offline von Ah  United States
diyAudio Member
 
von Ah's Avatar
 
Join Date: Feb 2008
Location: Maryland, USA
data_lore,
Nice looking build!One thing caught my eye in your pics. What are you using for standoffs on the PCBs? Could the PCBs be making contact with the chassis?
 
Old 4th April 2011, 03:00 PM   #68
diyAudio Member
 
Join Date: Feb 2009
Quote:
Originally Posted by von.ah View Post
data_lore,
Nice looking build!One thing caught my eye in your pics. What are you using for standoffs on the PCBs? Could the PCBs be making contact with the chassis?
Thanks von.ah - they are M3 bolts; the outer 4 mounting holes on the amp are not connected to GND (only the central mounting hole is connected to GND; which I'm not using.) I checked for continuity and it's ok.

I'm using Nylon spacers for the standoffs for the softstart and the PSU boards.
 
Old 5th April 2011, 10:32 AM   #69
Ciu is offline Ciu  France
diyAudio Member
 
Join Date: Feb 2005
Location: Northern France
Hello !

About the volume pot, wich value did you choose ?

R.C.
 
Old 5th April 2011, 03:16 PM   #70
diyAudio Member
 
Join Date: Feb 2009
Quote:
Originally Posted by Ciu View Post
Hello !

About the volume pot, wich value did you choose ?

R.C.
Hello RC, I honestly can't remember, I'll see if i can see any markings on it... but I'd rather not take it out to inspect it. Why do you ask?

Rich.
 

Closed Thread


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
FS: Connexelectronic TA3020 v3b, A1000SMPS, BIPS - for parts/repair! mx2 Swap Meet 9 21st January 2011 10:09 AM
Amplifier Sony TA-FA50ES Ave_Rapina Vendor's Bazaar 0 27th May 2010 07:55 PM
Connexelectronic TA2022 amplifier with FE167E (94dB/w/m) opinion? lhgin Class D 5 3rd August 2009 05:34 AM
NAD 3020 amplifier volume problems Neilb Solid State 7 20th December 2006 11:44 PM
Sony TA-NR10 power amplifier mikeks Solid State 12 13th September 2006 01:54 PM


New To Site? Need Help?

All times are GMT. The time now is 10:21 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