3E Audio 260-2-29A : TPA3255 / HA3588 CoilCraft / PFFB Fully differential.

[salinas]

It seems that he wants to drive a speaker and a sub at the same time with one module or something similar.
@salinas if that is what you want it won't work.

Yes its what I want, use this amp for 2 channels who will use the same amplified signal. (I have a passive crossover after this). Why won't it work?
Yeah I use the left signal as a one signal and the right as a second one, so they are two same signal and I use one out for the sub and one out for the mid top.

But u said than if I want to do that, its better to convert the amp in SE, so I just need to put two OPA1656 and to change resistor like previous post ?

I was thinking than what I did was going to work :')

 

[Sokel]

Yes its what I want, use this amp for 2 channels who will use the same amplified signal. (I have a passive crossover after this). Why won't it work?
Yeah I use the left signal as a one signal and the right as a second one, so they are two same signal and I use one out for the sub and one out for the mid top.

But u said than if I want to do that, its better to convert the amp in SE, so I just need to put two OPA1656 and to change resistor like previous post ?

I was thinking than what I did was going to work :')

I don't know how well this module would work with asymmetrical impedance,can't find any mention in the datasheet as others have.
In your case I would use one module for the lows (stereo,for both subs) and one for the highs (again stereo,for both mid-highs.
That would allow you to put the x-over (obviously active) before the low's amp and relieve from the rest of the spectrum.

 

[rbg]

Hi everyone, I don't know if I am too late with this project, but for some reason I can not find a place where I can buy boards for the amp and PSU :-(. Any chance you can point me in a right direction? I am in USA

 

[salinas]

I don't know how well this module would work with asymmetrical impedance,can't find any mention in the datasheet as others have.
In your case I would use one module for the lows (stereo,for both subs) and one for the highs (again stereo,for both mid-highs.
That would allow you to put the x-over (obviously active) before the low's amp and relieve from the rest of the spectrum.

Oh so you think than this module can't be use in two channel like one channel for a bass driver and on channel for a mid/top driver .. :/

 

[salinas]

So maybe I need to find a two other separate module for create a two channel amp. If you have any recommendation to give me to buy ..

 

[MCH]

Oh so you think than this module can't be use in two channel like one channel for a bass driver and on channel for a mid/top driver .. :/

@salinas The TPA3255 chip in this board can do what you want. What is more, it could even drive two stereo speakers + one woofer or tweeter+mid range+ woofer separately if it was wired for that use case (the evaluation board offers this possibility, see below):

Now, I don't know if what you want to do is recommend with this board. I don't see anything against but maybe @3eaudio can answer. If not recommend, maybe you can find another board designed for your use case.

 

[salinas]

@salinas The TPA3255 chip in this board can do what you want. What is more, it could even drive two stereo speakers + one woofer or tweeter+mid range+ woofer separately if it was wired for that use case (the evaluation board offers this possibility, see below):
View attachment 370510
Now, I don't know if what you want to do is recommend with this board. I don't see anything against but maybe @3eaudio can answer. If not recommend, maybe you can find another board designed for your use case.

Ok thanks for your reply,

If I can use this module amp like I want, I will do :
- 1 3EAUDIO 260-2-29A SE 2channel 150W 8Ohm
- 1 Alim 250W MP-H250S48

If I can't use this module amp like I want, I will do :
- 2 3EAUDIO 260-2-29A 1 channel by module 300W 8Ohm (like I add two output for create just one output / 150W 8Ohm + 150W 8Ohm) so 300W for my sub and 300W for my mid/top
- 1 Alim 550W MORNSUN LOF550-20B48

:/

Thanks for your help

 

[salinas]

I don't know how well this module would work with asymmetrical impedance,can't find any mention in the datasheet as others have.
In your case I would use one module for the lows (stereo,for both subs) and one for the highs (again stereo,for both mid-highs.
That would allow you to put the x-over (obviously active) before the low's amp and relieve from the rest of the spectrum.

Ok update of all our missinformation
Here a reply of my picture by 3EAUDIO :

" Good morning,

Yes just put the inputs in parallel as on your diagram "

So I think than I will do that, maybe in SE mode like you said me before.

I really hope than it will work ...

 

[Sokel]

Ok update of all our missinformation
Here a reply of my picture by 3EAUDIO :

" Good morning,

Yes just put the inputs in parallel as on your diagram "

View attachment 370553


So I think than I will do that, maybe in SE mode like you said me before.

I really hope than it will work ...

Ok since you got the confirmation.
But you'll still need to use a crossover for the sub,you can't just send the whole spectrum to it if it's passive and without crossover.

 

[salinas]

Ok since you got the confirmation.
But you'll still need to use a crossover for the sub,you can't just send the whole spectrum to it if it's passive and without crossover.

Oh yeah, I will use a passive crossover just after, thanks

 

[daniboun]

Hi everyone, I don't know if I am too late with this project, but for some reason I can not find a place where I can buy boards for the amp and PSU :-(. Any chance you can point me in a right direction? I am in USA

3E Module :

3E AUDIO 260-2-29A PFFB Module Amplificateur stéréo

Le module 3E Audio PFFB est un amplificateur Class D performant pouvant fonctionner en mode stéréo (BTL) ou mono (PBTL). Il se base sur l'utilisation de puces d'amplification TPA3255...

www.audiophonics.fr

LLC/PFC / Soft Start PSU :

https://fr.aliexpress.com/item/1005005875722287.html?spm=a2g0o.order_list.order_list_main.5.357c5e5bght5ZI&gatewayAdapt=glo2fra

If you want to check my APX555 Meausurements for this combo :

"Bamboo V2" project. 3E Audio 260-2-29A Stéréo Rev. B (OPA1656) + PFC/LLC PSU. APx555 Measurements )

Hi amigos, Before starting, I suspended the measurements of the first project "Micro Bamboo." I will come back to the quick measurements at the end of May finally, I still have to speak with Sami about his Micro Audio PSU... am focusing on this thread only on the measures of the "Bamboo V2"...

www.audiosciencereview.com

 

[rbg]

Thank you so much!

What about this PSU: https://www.audiophonics.fr/en/smps-power-supply/mornsun-lof550-20b36-module-p-18591.html

I see that the one you suggest measures great, I am just a little bit afraid of reliability of the one from aliexpress, do you think the one from audiophonics is not going to be as good when it comes to measurements?

 

[daniboun]

Thank you so much!

What about this PSU: https://www.audiophonics.fr/en/smps-power-supply/mornsun-lof550-20b36-module-p-18591.html

I see that the one you suggest measures great, I am just a little bit afraid of reliability of the one from aliexpress, do you think the one from audiophonics is not going to be as good when it comes to measurements?

It is up to you ) The Mornsun is reliable and works fine too )

 

[rbg]

I placed the order with audiophonics. BTW, last moment decided to go with 48V version, I hope I did not make a mistake.

Also, unfortunately they are out of chassis, searching aliexpress...

 

[MicroAudio]

SMPS600-R2 with the 3e audio amplifier module.

Exceptional sonics!

 

[daniboun]

SMPS600-R2 with the 3e audio amplifier module.

Exceptional sonics!

Are the measurements carried out via Apx555 or Cosmos ADC or other... ?
Let's stay humble ) exceptional is a big word. The Yongzhuxing PFC/LLC PSU @50€ beats the SMPS600-R2


Yongzhuxing 600W PFC /LLC (APx555 measurements) / 3E audio PFFB

Micro Audio SMPS600-R2 / 3E audio PFFB

 

[MicroAudio]

I believe your measurements was made at 4 Ohms?

Because the measurement you are comparing to was made at 4 Ohms.

I cant see much difference in measurements TBH.

Also, the sound with the SMPS600-R2 is way better than the regulated SMPS.

That's what most people confirmed.

APX525 was used for measurements.

Also, you can buy whatever you want, I never forced anyone to buy my products.

Thanks

 

[daniboun]

I believe your measurements was made at 4 Ohms?

Because the measurement you are comparing to was made at 4 Ohms.

I cant see much difference in measurements TBH.

Also, the sound with the SMPS600-R2 is way better than the regulated SMPS.

That's what most people confirmed.

APX525 was used for measurements.

Also, you can buy whatever you want, I never forced anyone to buy my products.

Thanks

I'm not here to overshadow you, don't worry) But we have to be transparent for the members of the forum. )

For the rest, the APx555 test conditions are here

 

[salinas]

Hi, I have a other question, one the amp of 3E audio, can I short circuit theses two out for create a one out amp, and with I will power my ways system in parralele, so I will have a system with 2.66 Ohm .

Is it possible ?

 

[daniboun]

Hi, I have a other question, one the amp of 3E audio, can I short circuit theses two out for create a one out amp, and with I will power my ways system in parralele, so I will have a system with 2.66 Ohm .

Is it possible ?

You mean : can we set a BTL Stereo 3E Module so we can use it in PBTL ?