TPA3255 - all about DIY, Discussion, Design etc

[daniboun]

Hi, this looks good and cheap, how does it sound?
To build a complete amp.out of it what is needed?

- one of this board (its stereo?)
- which supply?
- anything else?

Thanks for sharing

You need to do like this

Module board
Alu Case
PSU
Connectors (RCA, Micro JST, RCA, Banana plugs)
AC Filter
Option : Volume pot
and LOTS OF PATIENCE )

 

[Thepinguin]

i remind this carpet seen on lbc, are you from Lyon France?

 

[Yatsushiro]

i remind this carpet seen on lbc, are you from Lyon France?

lbc is LeBoncoin?

 

[notakosan]

For the Shui Yuan board, can I simply do the following?
* wire a DC Jack to the DC terminal screws
* connect speakers directly to the green Phoenix terminal blocks
* connect a 3.5mm jack to the input terminal via a voltage divider or volume pot
* power it with a 24v charger

Or does it involve some extra inductor/capacitor circuit?

 

[daniboun]

Hi,

*You can wire a DC Jack, pay attention @ quality ! need a good one (6A at least)

*Speakers must be connected to the Green Speakers inputs (supports 4R / 8R)

*You need a 3.5MM jack to JST connector better (check : TINYSINE Cable Jack 3.5mm Stereo Femelle vers XH 3 Pins - Audiophonics)

*PSU 24V / 6A OK ( I guess you mean a Brick PSU)

 

[notakosan]

Hi,

*You can wire a DC Jack, pay attention @ quality ! need a good one (6A at least)

*Speakers must be connected to the Green Speakers inputs (supports 4R / 8R)

*You need a 3.5MM jack to JST connector better (check : TINYSINE Cable Jack 3.5mm Stereo Femelle vers XH 3 Pins - Audiophonics)

*PSU 24V / 6A OK ( I guess you mean a Brick PSU)

Thanks for the reply. Yes, I meant a Brick PSU.

The 3.5mm jack to JST connector would be perfect.

 

[Solve]

I see in my 3e audio CLIP_OTW leds start flashing in rythm with bas when I crank it up to 50% from computer, not extreme I think just loud.
Have an Mean Well lrs-350-36 and wonder if I change the four outcaps 4x2200uF to something bigger maybe 4x3300uF would do something?

 

[bucks bunny]

TPA3255 clipping trips at medium level so I would not much worry about this.

 

[Solve]

TPA3255 clipping trips at medium level so I would not much worry about this.

Yes but is the caps to small to take the extra juice?

 

[bucks bunny]

These on-board bulk caps should be of good quality and low-esr type, that is all what counts. Increasing capacitance beyond some 1000uF together with a smps are counter-productive. Btw I designed many amps and smps from scratch and consider all these anecdotes concerning the sound of caps utter nonsense.

 

[Thepinguin]

You need to do like this

Module board
Alu Case
PSU
Connectors (RCA, Micro JST, RCA, Banana plugs)
AC Filter
Option : Volume pot
and LOTS OF PATIENCE )


https://ibb.co/xm0MFvW
https://ibb.co/3fQVFrN

I see another module between psu and amp what is it?

Do u have links of psu, module etc?

Thanks

 

[daniboun]

Hi

I already shared details a few pages back ;-)
The little module in the middle is an AC Audio filter

 

[mamocel]

You need to do like this

Module board
Alu Case
PSU
Connectors (RCA, Micro JST, RCA, Banana plugs)
AC Filter
Option : Volume pot
and LOTS OF PATIENCE )


https://ibb.co/xm0MFvW
https://ibb.co/3fQVFrN

Hi! Daniboun.
Your implementation is not too well within the rules of the art.
Your mains filter is too close to the op amps and the signal cable which flies above the power supply ... (high frequency).
I would have put the whole AC part behind ...
You make rest

 

[daniboun]

Don't worry about it )
I made some test before doing it. The fact is : the amp is working fine, no interferences in the signal path, everything is clean and even connected in BT, no noises = nothing to complain about so ) I just bypassed the volume pot and it is even better.

 

[CliveJ9]

Price up £10 in a week

You need to do like this

Module board
Alu Case
PSU
Connectors (RCA, Micro JST, RCA, Banana plugs)
AC Filter
Option : Volume pot
and LOTS OF PATIENCE )

Hi Dani


Please pre worn us of a good review this amp has gone up £10 in less than a week.

 

[daniboun]

Hi,

Not sure I will have time to review. I am really busy these last days with my Purifi project..
For the price, this amp is a safe value and sounds amazing as the Shui Yuan.

 

[UAN]

The advertisement is engine of the trade...
I bought Shui Yuan it and I'm not very happy.

 

[daniboun]

The advertisement is engine of the trade...
I bought Shui Yuan it and I'm not very happy.

can you expand to help us understand?
I reassure you I have no action with them ...

 

[CliveJ9]

It was a jest

Hi,

Not sure I will have time to review. I am really busy these last days with my Purifi project..
For the price, this amp is a safe value and sounds amazing as the Shui Yuan.

Hi Dani


It was a jest, keep up the good work. I've found out that it's due to material costs increase but postage is comming down from China.

 

[UAN]

can you expand to help us understand?
I reassure you I have no action with them ...

I compared it to the Fx 502s in terms of sound and also measured distortion.
At a power of 10 watts, THD has 4 times more, with only the 3rd harmonic.
Sounds harsh and tedious compared to the FX 502s. Both devices are original, without alterations. Power supply 24 V.