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

Class D for 2.1 setup
Class D for 2.1 setup
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 3rd October 2018, 07:29 AM   #1
Rude1 is offline Rude1  India
diyAudio Member
 
Join Date: May 2018
Location: Delhi
Default Class D for 2.1 setup

Objective:- Amplifier to power 2.1 setup with enough headroom to support future driver upgrades.
Intended application- To drive 2x35W RMS satellites and 1x100W RMS subwoofer.
Desired features- Amplifier with more than 50W RMS per channel for satellites and 200W+ RMS on Subwoofer channel, with onboard filters and tone control.
Budget- under 100$
Probable Source- Ali Express


I haven't had good experience with TPA3116 boards in the past. They were a bit lacking in terms of power delivery. I have seen TAS5630 boards and the reviews they've got, both on AliExpress and DaytonAudio but want an opinion here. maybe there's something that fits the bill or might even saves it.
  Reply With Quote
Old 3rd October 2018, 11:15 AM   #2
irs20957 is offline irs20957  Russian Federation
diyAudio Member
 
Join Date: Dec 2017
Location: NNovgorod
tpa3255))))
  Reply With Quote
Old 4th October 2018, 04:08 PM   #3
Think is offline Think  Netherlands
diyAudio Member
 
Join Date: Nov 2017
Location: Den Haag/The Hague, Holland, The Netherlands
Class D for 2.1 setup
Have 2 of these and love them: TPA3116 2.1 Digital Audio Amplifier Board HIFI DC 12-24V BASS Speaker 50W*2+100W | eBay
Only had to replace the cap of after running at 24V for a long time (months daily) The default cap is 25V rated, you schould not give it more then 20V (The difference in loudness is very small: about 1 dB.) or replace it for 1 or 2 35V caps. There are holes in de board for a setup of 2 caps instead of 1 big one laying on it's side.

You can switch the 125Hz high pass filter for the tops on and off and the lowpass for the sub is variable from about 50 to 250Hz.
  Reply With Quote
Old 4th October 2018, 08:14 PM   #4
Rude1 is offline Rude1  India
diyAudio Member
 
Join Date: May 2018
Location: Delhi
I too have 2 TPA3116 amplifiers. One is a stereo amp and other is 2.1 Both were used with 24V10A power supply and 19V5A power supply. Both went into "protect" mode even when higher power was used so now I'm using the 19V5A supply on the 2.1 board. Now I want something that can deliver more power to the current and future bigger drivers.
  Reply With Quote
Old 4th October 2018, 08:23 PM   #5
irs20957 is offline irs20957  Russian Federation
diyAudio Member
 
Join Date: Dec 2017
Location: NNovgorod
Quote:
Originally Posted by Rude1 View Post
Now I want something that can deliver more power to the current and future bigger drivers.
TPA3251, TPA3255 in 2.1 mode.
  Reply With Quote
Old 4th October 2018, 08:35 PM   #6
Rude1 is offline Rude1  India
diyAudio Member
 
Join Date: May 2018
Location: Delhi
Yup, I have narrowed down one TPA3255 board on AliExpress, will order it in a day or two.
TPA3255 NE5532 IS1864S 2.1 300W 150W 150W Class D Bluetooth Amplifier RCA DIY
Online Shop TPA3255 NE5532 IS1864S 2.1 300W +150W +150W Class D Bluetooth Amplifier RCA DIY | Aliexpress Mobile
  Reply With Quote
Old 5th October 2018, 12:36 PM   #7
Think is offline Think  Netherlands
diyAudio Member
 
Join Date: Nov 2017
Location: Den Haag/The Hague, Holland, The Netherlands
Class D for 2.1 setup
Quote:
Originally Posted by Rude1 View Post
I too have 2 TPA3116 amplifiers. One is a stereo amp and other is 2.1 Both were used with 24V10A power supply and 19V5A power supply. Both went into "protect" mode even when higher power was used so now I'm using the 19V5A supply on the 2.1 board. Now I want something that can deliver more power to the current and future bigger drivers.
Then there was probably something wrong as my boards play fine and crazy loud all day long with 2Ohm (par. 2x4 Ohm) subs and 5 Ohm (90dB/W) speakers with a (HP) 3.14A 19V or 24V 6A power supply's I have.

(1) What kind of speakers are you using, how sensitive and how many Ohm's are they and (2) is the cable from you power supply not to thin or to long? (3) Do the heatsinks make good contact, do they get a little warmer when playing loud?

More power won't give you much more volume, as double the power is only +3dB minus power compression, louder. Doubling the speakers and powering them gives +6dB.
  Reply With Quote
Old 5th October 2018, 12:59 PM   #8
Nenola is offline Nenola  Finland
diyAudio Member
 
Join Date: Feb 2008
Quote:
Originally Posted by Rude1 View Post
Yup, I have narrowed down one TPA3255 board on AliExpress, will order it in a day or two.
TPA3255 NE5532 IS1864S 2.1 300W 150W 150W Class D Bluetooth Amplifier RCA DIY
Online Shop TPA3255 NE5532 IS1864S 2.1 300W +150W +150W Class D Bluetooth Amplifier RCA DIY | Aliexpress Mobile
Beware that the amp doesn't seem to have any adjustment for main/sub levels or crossover frequencies.

Depending on your speakers, the output might be imbalanced between main and sub and there is no way you can adjust it. (or does the bass mean subwoofer and treble main speakers?)

And in my opinion, a very important feature is a crossover, and I would prefer adjustable when it comes to 2.1 systems. That might have at least fixed lowpass for sub, but there is no information about it.
  Reply With Quote
Old 5th October 2018, 05:12 PM   #9
Rude1 is offline Rude1  India
diyAudio Member
 
Join Date: May 2018
Location: Delhi
Quote:
Originally Posted by Think View Post
(1) What kind of speakers are you using, how sensitive and how many Ohm's are they and (2) is the cable from you power supply not to thin or to long? (3) Do the heatsinks make good contact, do they get a little warmer when playing loud?
1. The speakers I'm currently using are 2x5W@4Ohm as satellites and 2x40W@4Ohm(connected in parallel thus effective impedance is 2Ohm) as Subwoofer. The satellites are 2.5inch full range drivers and the sub comprises of 2 4inch drivers.
2. The power supply is a Dell 90W PSU so cable length and guage is what comes standard with such power supply.
3. Heating isn't the issue as the level at which I play music, the amp runs stable for hours on end.


You can better understand the issue in the following thread.
Problems with amp and Bluetooth module.
@Nenola
That's my concern too. That's why I'm considering TAS5630 also.
Lusya TAS5630 + OPA1632DR + TL072 2.1 amplifier machine home aduio amplifier machine Class D 300W + 2 * 150W-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group
this one is supposed to have better tonal control with dedicated subwoofer frequency/level control pot. But TAS5630 has been found to be "noisy" by folks here.
  Reply With Quote
Old 6th October 2018, 10:40 AM   #10
Think is offline Think  Netherlands
diyAudio Member
 
Join Date: Nov 2017
Location: Den Haag/The Hague, Holland, The Netherlands
Class D for 2.1 setup
From that threat:

"For the L-R channel, it's a pair of 6.5inch JBL Coaxial drivers rated at 4 Ohm 45W RMS while the Subwoofer unit is a pair of 4 inch 4 Ohm drivers rated at 40W RMS. They are wired in parallel so the effective impedance would be 2 Ohm."


"If it happens without the subs attached, then I don't think your problem is over current or heat related."

You don't seem to have a over current problem.

@1 Earlier you wrote 45W instead of 5W
Have you measured the fysical resistence/imdedence of the speakers, (maybe found an impedence graph) they might have a dip to low for the amp while playing. Did you test with other speakers?

@2 should be ok.

@3 If the heatsink does not get a little warm, it might not have good contact with the chip, which then can overheat and shut down.

Getting a more powerfull amp will get you no more output.
  Reply With Quote

Reply


Class D for 2.1 setupHide 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
Efficient Class-D amplification for mobile PA setup Philipp F Class D 2 8th May 2018 01:28 AM
Will this class D setup work? Help a noob out :) Mark Communifi Class D 4 29th May 2015 07:51 AM
2.1 class d amp with subwoofer output for solar setup lentildude Class D 3 6th October 2013 04:15 AM
Bridged setup with 2 class D amps pegodk Class D 5 7th May 2013 12:36 PM
Class D VS. Class T, Help setup with passive speaker sabio0 Class D 1 29th November 2012 05:37 PM


New To Site? Need Help?

All times are GMT. The time now is 05:02 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki