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TPA3255 - all about DIY, Discussion, Design etc.
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Old 23rd May 2019, 11:15 AM   #1251
cacao ambiance is offline cacao ambiance  United Kingdom
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this was the seller i got it from. really good. no problems but for, when its choosing which input to use. i hear the relay click a few times, then it stops on analogue as i mean for it to. no noise, bt works fine.
Finished blue TPA3116 2.1+ wireless Bluetooth 4.0 Digital Power Amplifier 100W+2*50W New-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

not used it much, ill have to listen out for shifts the x-over-frequency next time i use it.... Didn’t know about that problem. i got it to go with my cheapo crapo panasoinc hifi speakers but nice amp boombox project.
pics of crap speakers:
Heh, made a #diy #GhettoBlaster. Using PS10 2rd Panasonic home #hifi...

Last edited by cacao ambiance; 23rd May 2019 at 11:24 AM. Reason: photos
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Old 23rd May 2019, 12:33 PM   #1252
doctormord is offline doctormord  Germany
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Now that's what i call a fancy pancy GhettoBlaster.


What kind of washlight is this? Do you have a sellers link?
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Old 23rd May 2019, 01:36 PM   #1253
cacao ambiance is offline cacao ambiance  United Kingdom
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Thanks. its my i don’t mind sharing it if friends, that is if i had friends that wanted to use it... maybe at a camp... but not localy... anyway. snag is i do mind if something happens to that nice 50 amp + lithium batt pack.

working on a more hifi boom box. hench the tpa3255 2.1 amp

its a par light, spot. not a wash. there is a wash/flood version though

i modded mine so they are powered from usb or 5-32v (i think) dc. instead of mains ac . Added a wireless dmx module. see my other posts on http://social.aross.me hash tag #mytechproject. there at least one post about my mods to that rgbw led par light


Been researching these "10w"~ :/ led wash lights: one of them is supposedly brighter, higher power led. it looks different from other more common design. look carefully and u see. it costs more. i forget which link. started my search a few months ago. been on the project back log.

RGB+UV 30W LED COB Wash Effect Stage Lights,Remote Control UV /RGB 3IN1/Purple/RGBW/LED Par Light,DJ Mini LED Strobe Stage Lamp-in Stage Lighting Effect from Lights & Lighting on Aliexpress.com | Alibaba Group
Fast Shipping LED flat par 9X10W+1X30W Digit Led Disco Light RGB 3IN1 LED Light Stage DJ Light DMX Led Par Par Party Lights-in Stage Lighting Effect from Lights & Lighting on Aliexpress.com | Alibaba Group
Buy Products Online from China Wholesalers at Aliexpress.com
https://www.aliexpress.com/item/RGB-...897931465.html
https://www.aliexpress.com/item/LED-...860968217.html
https://www.aliexpress.com/item/LED-....html#feedback
https://www.aliexpress.com/item/Stag...876089014.html
https://www.aliexpress.com/item/Wire...888684844.html
https://www.aliexpress.com/item/18X1...885237609.html
https://www.aliexpress.com/item/12x1...872045887.html
https://www.aliexpress.com/item/LED-...867985987.html
https://www.aliexpress.com/item/LED-...959001328.html

https://www.ebay.co.uk/sch/i.html?_f..._skc=100&rt=nc
https://www.ebay.co.uk/itm/RGB-UV-30...AAAOSwtINcGesI
https://www.ebay.co.uk/itm/RGB-UV-30...torefresh=true
https://www.ebay.co.uk/itm/RGB-UV-CO...54m:rk:37:pf:0
https://www.aliexpress.com/wholesale...OB+LED+Par+10w
https://www.aliexpress.com/item/Wire....html#feedback
https://www.aliexpress.com/item/for-...970825393.html
https://www.aliexpress.com/item/10W-...881038118.html
https://www.aliexpress.com/item/Stag...881338144.html
https://www.aliexpress.com/item/CLAI...965809177.html
https://www.aliexpress.com/item/10W-....html#feedback
https://www.aliexpress.com/item/10W-....html#feedback

A alt diy option using fancy decent cree leds, my research. got a cree xml color. there good, bright . usb powered . xpe led boards for a high power rgbw flood im thinking
https://www.aliexpress.com/item/LED-...878281201.html
https://www.aliexpress.com/item/DC12...695483947.html
https://www.aliexpress.com/item/40-K...824542265.html
https://www.aliexpress.com/item/Cree...889349583.html
https://www.aliexpress.com/item/CREE...884880037.html
https://www.aliexpress.com/wholesale...+XPE+XP-E+rgbw
https://www.aliexpress.com/item/Cree...055622751.html
https://www.aliexpress.com/item/Cree...052419883.html
https://www.aliexpress.com/item/Mi-l...824403073.html
about:newtab
https://www.aliexpress.com/item/DMX5...276954698.html
https://www.aliexpress.com/item/Mi-l...847955017.html
https://www.aliexpress.com/store/pro...831739488.html
https://www.aliexpress.com/store/pro...830442004.html
https://www.aliexpress.com/wholesale...Id=32857342839
https://www.aliexpress.com/item/54x3...857342839.html
https://www.aliexpress.com/item/Stag...853524237.html
https://www.aliexpress.com/wholesale...initiative_id=

If there any more led discussion, i will then start a new discussion thread.

Last edited by cacao ambiance; 23rd May 2019 at 01:51 PM.
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Old 23rd May 2019, 01:56 PM   #1254
cacao ambiance is offline cacao ambiance  United Kingdom
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from the seller i got my rgb par light
theres are from same seller and are compatible with each other.
1pcs: ZjRight 15W IR Remote RGBW 12LED Par lights dmx512 Projector stage light Sound Control night party dj disco effect Dyeing lights-in Stage Lighting Effect from Lights & Lighting on Aliexpress.com | Alibaba Group
4pcs: ZjRight LED light 4pcs/lot 15W IR Remote LED Par light DMX512 Sound Control ktv bar stage party lighting DJ Xmas ceiling lights-in Stage Lighting Effect from Lights & Lighting on Aliexpress.com | Alibaba Group

use a magnet to attach them to steel beams, posts, etc

note the firmware is different between different models/sellers. the non IR remote + fan version has diff firmware from ir remote + fan version. if getting other ir remote version, make sure remote looks the same for chance of matching firmware, dmx channels, sound to light.

Last edited by cacao ambiance; 23rd May 2019 at 02:02 PM.
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Old 23rd May 2019, 03:00 PM   #1255
doctormord is offline doctormord  Germany
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Thanks. I used to make an RF-DMX-Adapter with an ESP32+RS485 transceiver.
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Old 24th May 2019, 01:25 PM   #1256
DUG is offline DUG  Canada
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Quote:
Originally Posted by doctormord View Post
The second circuit doesnt make sense here and will fry the TPA inputs due to overvoltage.
Quote:
Originally Posted by chermann View Post
yes you are right...its bad to show the principle of the circuit with wrong values....


sorry
This circuit is for the TPA3116/8 type.

3251/5 does not have a mute pin.
Attached Images
File Type: jpg MUTE.JPG (14.4 KB, 403 views)
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Old 24th May 2019, 01:37 PM   #1257
doctormord is offline doctormord  Germany
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Well i had "mute" equivalent with "shutdown/reset" in mind.


While the MUTE pin at 3116/3118 is specified for up to PVCC+0.3V, the /RESET pin at TPA324X/5X is specified for 4.2V only. That's why it will stress protection diode (Current limited through the 10k resistor) at the /RESET input for the time intil the Cap is fully charged. (Which duration is limited trough the 110k to ground + some leakage current from input and diode).


A simpler solution for the 3116/3118 would be combining both resistors into one and connect MUTE between diode and capacitor. When choosing R to 750k the C can be as low as 1uF.

Last edited by doctormord; 24th May 2019 at 01:59 PM.
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Old 2nd June 2019, 11:30 AM   #1258
DIP8 is offline DIP8  Italy
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Hello.
In older posts there was a tpa3255 vs nad c320 comparing
has anyone compared tpa325x with a more modern integrated?
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Old 2nd June 2019, 02:14 PM   #1259
doddstar is offline doddstar
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Hello, first time posting here, though I've been lurking and reading extensively for a while.

I'm soon to begin construction of an 8 channel power amp using four of 3e Audio's EAUMT-0260-2-A tpa3255 modules.

Power supplies are four MEAN WELL LRS-350-48. I know I could have gone for a single much more powerful supply but it needed to fit in a 1U rack case.

The final system will use six channels to power the tweeters, mids and woofers for some stereo speakers with digital crossovers, and one channel to power a center speaker with it's own passive crossover. One channel will be redundant for now. (sub channel has it's own power amp) I only listen to 2.1 or 3.1 audio.

I have most of the parts including the four modules and two of the four power supplies.

I have some questions that I have not been able to answer through researching this and the other discussions. I'd very much appreciate your help.

1. There has been some discussion in the past about the ability of the LRS-350-48 to hold up during bass heavy music. Is this true or did that turn out to be unfounded?

2. I will have one redundant channel so one TPA3255 module will be half unused. Is it OK to keep that channel open or should I terminate it with a resistor for load?

3. The tweeter channels will barely output any power compared to the woofers. Does it therefore make sense to spread the load on the EAUMT-0260-2-A? So that one module amplifies a woofer channel and a tweeter channel, another does the same, another does both the mids and the final one does the center speaker? I suppose I'm getting at cross talk here - would there be any issues?

4. Finally, the master slave modes for the EAUMT-0260-2-A. I understand how to set this up but is it necessary when using separate power supplies?

Cheers
Dave
Attached Images
File Type: jpg EAUMT-0260-2-A out.jpg (462.2 KB, 279 views)
File Type: jpg EAUMT-0260-2-A in.jpg (511.9 KB, 277 views)
File Type: jpg LRS-350-48 and modules.jpg (695.9 KB, 276 views)
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Old 5th June 2019, 11:03 AM   #1260
doctormord is offline doctormord  Germany
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1: True
2: terminate the input and put a 16-32R load resistor on the output. (Like 5W ceramic or so)
3: You may try different combinations, i wouldn't expect crosstalk here is having a woofer and a tweeter on one module. (Just because your woofer wont work on tweeter frequencies and vice versa)
4: I'd stick with one master per side. (So 1 master, 1 slave)
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