Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

TPA3116D2 Amp
TPA3116D2 Amp
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 10th June 2019, 06:21 AM   #11021
chermann is offline chermann  Austria
diyAudio Member
 
Join Date: Jan 2017
Location: Vienna
Quote:
Originally Posted by DUG View Post
It is my understanding from the data sheets that the absolute maximum supply for the TPA311x chips is 30V

I would say that most people run them at 24V or lower and if you wish to push them and be safe then operate at a couple of volts less than the 30V of absolute maximum.



oooh..sorry you are right...i had the tda7498 in my head...i am sorry
  Reply With Quote
Old 10th June 2019, 08:05 AM   #11022
rabbitz is offline rabbitz  Australia
diyAudio Member
 
rabbitz's Avatar
 
Join Date: Jul 2003
Location: Newcastle, Australia
Quote:
Originally Posted by Fdsy View Post
Is it a recent purchase? price? ebay/ali links please...
Received last week from eBay.

Official Version Finished TPA3116D2 50Wx2 Stereo Digital Power Amplifier Board 664072567238 | eBay

I prefer this module of the TPA3116D2 to the other 2 I have with pots (hissy). This and the blue/black module have more body, better balanced and digs deeper.... just sounds better and with a quiet background.

These are the 2 with pots and the first is not as well built, doesn't have Nichicon caps as in the pic, both caps are different and the pot switch is iffy. The second one is better built but no better in sound IMO.

There are tons out there but it's a lottery on which one to pick that's why this thread is valuable.
Attached Images
File Type: jpg tpa3116_pot1.jpg (22.3 KB, 319 views)
File Type: jpg tpa3116_pot2.jpg (32.7 KB, 319 views)
__________________
If there are no dogs in Heaven, then when I die I want to go where they went - Will Rogers
  Reply With Quote
Old 11th June 2019, 07:08 PM   #11023
hansueli is offline hansueli  Switzerland
diyAudio Member
 
Join Date: Oct 2017
I changed coils from 33uH to 10uH. Board is red dual TPA3116. The funny thing is, that the LC filter use 680nF and 33uH. But 680nF ist recommended with 10uH coils for 4Ohm.


Why almost all dual TPA3116 board have 33uH coils?


Another question. Why suddenly the ampcoils gots very hot. Nothing changed... only pulg unplug the audio signal for looking right and left working both the same.
  Reply With Quote
Old 11th June 2019, 08:05 PM   #11024
FauxFrench is offline FauxFrench  France
diyAudio Member
 
Join Date: Dec 2017
Location: The mountains, calm and quiet.
Quote:
Originally Posted by hansueli View Post
I changed coils from 33uH to 10uH. Board is red dual TPA3116. The funny thing is, that the LC filter use 680nF and 33uH. But 680nF ist recommended with 10uH coils for 4Ohm.

Why almost all dual TPA3116 board have 33uH coils?

Another question. Why suddenly the ampcoils gots very hot. Nothing changed... only pulg unplug the audio signal for looking right and left working both the same.
For the output filter, and when the manufacturer is not clear on the preferences, I rely on NXP/Philips as guidance: 10uH/1.5uF for 4 Ohm, 15uH/1uF for 6 Ohm and 22uH/680nF for 8 Ohm.

These values are not an absolute truth and 33uH can be used (changes the filter damping somewhat) PROVIDED that the 33uH chokes can handle the current. 33uH lowers the filter cut-off frequency somewhat and reduces the residual of the carrier frequency. Unfortunately, many double TPA3116 designs for low impedance speakers use rather small chokes that may saturate with the increased load current.

Hot filter chokes - does the amplifier still work?

Last edited by FauxFrench; 11th June 2019 at 08:09 PM.
  Reply With Quote
Old 11th June 2019, 08:12 PM   #11025
hansueli is offline hansueli  Switzerland
diyAudio Member
 
Join Date: Oct 2017
Click the image to open in full size.


This is from TPA3116 datasheet. 10uH and 680nF.


Yes amps still work normal. Only chokes got hot.


I can't find my Flir at the moment for taking pictures
  Reply With Quote
Old 11th June 2019, 09:11 PM   #11026
FauxFrench is offline FauxFrench  France
diyAudio Member
 
Join Date: Dec 2017
Location: The mountains, calm and quiet.
Quote:
Originally Posted by hansueli View Post

This is from TPA3116 datasheet. 10uH and 680nF.

Yes amps still work normal. Only chokes got hot.

I can't find my Flir at the moment for taking pictures

If you let your amplifier operate with the input signal turned fully down (no music), the chokes should not be hot. If the chokes become hot when you play (loud) music, it indicates that the chokes cannot handle the load current (saturation effects) and both the chokes and the amplifier chip will become hot.
I recall that you use rather low impedance speakers with high current levels.

Last edited by FauxFrench; 11th June 2019 at 09:13 PM.
  Reply With Quote
Old 11th June 2019, 09:21 PM   #11027
hansueli is offline hansueli  Switzerland
diyAudio Member
 
Join Date: Oct 2017
Suddenly chokes got hot during idle.

Befor it has no problem. I came back from holiday and solder some stuff and playing with my amp.

After I unplug aux and one channel got hot walso with no or very quiet volume!!!
  Reply With Quote
Old 11th June 2019, 10:26 PM   #11028
jdiego is offline jdiego  Chile
diyAudio Member
 
Join Date: May 2016
I've replaced my Breeze Audio TPA3116 with a FX-Audio FX502S PRO (TPA3250)FX Audio FX502S PRO Audio Digital High Power Amplifier HIFI 2.0 Home Mini Professional Amp TPA3250 NE5532 70W *2 No Power Supply-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

I've replaced the NE5532 chips with LM4562NA/NOPB and I'm using a Mean Well 709-LRS150-24 (both are from Mouser).

FX-Audio FX502S PRO is twice as expensive as the Breeze Audio, but I think it sounds better. I miss the midrange boost of the Breeze Audio though, because it make guitars to sound in front.


What would be a better inexpensive stereo amp today?
  Reply With Quote
Old 12th June 2019, 01:52 AM   #11029
voltwide is offline voltwide  Ireland
diyAudio Member
 
Join Date: Jan 2010
Quote:
Originally Posted by hansueli View Post
Suddenly chokes got hot during idle.

Befor it has no problem. I came back from holiday and solder some stuff and playing with my amp.

After I unplug aux and one channel got hot walso with no or very quiet volume!!!
This may be an indication of too low pwm frequency. You might check this with an oscilloscope.
__________________
tuby or not tuby, that is here the question!
  Reply With Quote
Old 12th June 2019, 05:06 AM   #11030
chermann is offline chermann  Austria
diyAudio Member
 
Join Date: Jan 2017
Location: Vienna
Quote:
Originally Posted by jdiego View Post
I've replaced my Breeze Audio TPA3116 with a FX-Audio FX502S PRO (TPA3250)FX Audio FX502S PRO Audio Digital High Power Amplifier HIFI 2.0 Home Mini Professional Amp TPA3250 NE5532 70W *2 No Power Supply-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

I've replaced the NE5532 chips with LM4562NA/NOPB and I'm using a Mean Well 709-LRS150-24 (both are from Mouser).

FX-Audio FX502S PRO is twice as expensive as the Breeze Audio, but I think it sounds better. I miss the midrange boost of the Breeze Audio though, because it make guitars to sound in front.


What would be a better inexpensive stereo amp today?
Hi

My personal impression of the TPA3116 dual chip what i have is that the opamps are fake! -change to 4562 without filter changing make the tpa3116 playing "mid" orientated without deepness. lm49720 is more neutral because the 4562 sounds "powerful"...not always fine (outputfilter)
i read about TPA3116 --> set down the gain to 26 or better 20dB !
New Breeeze Audio TPA3116 2.0 100W dual chip


chris

Last edited by chermann; 12th June 2019 at 05:09 AM.
  Reply With Quote

Reply


TPA3116D2 AmpHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS- Twisted Pear Buffalo 32S Board & System New & Unused secretriches Swap Meet 1 10th August 2009 02:17 PM
Modify & build out (2) Western Electric 300B / 2A3 Hammond monoblock amps & UTC LS-5 quality sound Tubes / Valves 0 9th May 2009 03:59 PM
Krell KSA 80 bias & dc offset check & adjust procedure Clouseaupte Solid State 3 9th August 2007 09:39 AM
DIY-AMP <ZAS> Low THD & IM high bandwith murphy Solid State 18 30th December 2005 10:28 AM


New To Site? Need Help?

All times are GMT. The time now is 03:41 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki