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"Micro Bamboo Project" : 3E Audio 260-2-29A Stereo amplifier + Micro-Audio PSU

Anyone got better ideas how to lay this out or something I should think about ?
(holes don't really allow fixing to the side wall heatsink without mega effort :) )
1706692247727.png
 
brunes said:
Anyone got better ideas how to lay this out or something I should think about ?
(holes don't really allow fixing to the side wall heatsink without mega effort :) )
View attachment 346409
Click to expand...
Looks good. I would personally rotate the psus 180. I’m a newb and don’t know if that’s correct but in my mind the amp might have some shielding.
 
I would rotate the bottom PSU 180 degrees so that the power leads go through the middle of the case.
I would rotate the amplifier boards 90 degrees (clockwise and counterclockwise) so that the input connectors are as close as possible to the rear panel of the case (the shortest connection of the input signals).
 
Zek said:
I would rotate the bottom PSU 180 degrees so that the power leads go through the middle of the case.
I would rotate the amplifier boards 90 degrees (clockwise and counterclockwise) so that the input connectors are as close as possible to the rear panel of the case (the shortest connection of the input signals).
Click to expand...
Agree will do the same.
Just keep your cables as short as possible. Do not forget to twist it.

PS : If the JST XH 2.54 shielded cables come from Audophonics > you need to reverse the negative and ground pin if you want to respect the color codes
 
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Hello!
That's my 1st incarnation (budget-friendly) of 3e audio D amp and PecanPi DAC combo - fully balanced system driving Dynaudio Contour 1.1 in 14 m2 room.
I am really happy with the performance but I believe the Dynaudio speakers will be even more happy with more power.
I would apprecate to have more "heavy" and "massive" sound signature, with more bottom end and control.
So should I expect that Micro Audio SMPS630-SO power supply would be much better choice here?

PXL_20240202_214015249.jpg

 
bugal said:
Hello!
That's my 1st incarnation (budget-friendly) of 3e audio D amp and PecanPi DAC combo - fully balanced system driving Dynaudio Contour 1.1 in 14 m2 room.
I am really happy with the performance but I believe the Dynaudio speakers will be even more happy with more power.
I would apprecate to have more "heavy" and "massive" sound signature, with more bottom end and control.
So should I expect that Micro Audio SMPS630-SO power supply would be much better choice here?

View attachment 346918​

Click to expand...
The 480, dual mono sounds like what you need.
The Micro audio will power that perfectly!
 
bugal said:
Hello!
That's my 1st incarnation (budget-friendly) of 3e audio D amp and PecanPi DAC combo - fully balanced system driving Dynaudio Contour 1.1 in 14 m2 room.
I am really happy with the performance but I believe the Dynaudio speakers will be even more happy with more power.
I would apprecate to have more "heavy" and "massive" sound signature, with more bottom end and control.
So should I expect that Micro Audio SMPS630-SO power supply would be much better choice here?
Click to expand...
Hi
Funny you used a PC case ) I did the same with my very first DIY project when I began the DIY )
The Micro audio PSU will help you a lot for what you re looking for ) It is really worth the while.

IMG_20191214_114237.jpg

IMG_20191214_114002.jpg
 
daniboun said:
Check this, you will see the difference between 3E Audio Stereo and Mono modules related to PSU/Speakers impedance

https://audiosciencereview.com/foru...ft-pffb-fully-differential.47660/post-1812280
Click to expand...
I have seen these figures - these are peak performance parameteres. In case of low- and mid-volume listening level there are also some other aspects which matter and shape the sound signature (thin vs heavy, tiny vs massive, etc.) and these are related to several various factors, not just PSU Watts, right?
For example, do you notice a difference in sound signature (heavy/thin, more/less bass etc.) between MP-H250S48 vs Micro-Audio PSU at low volume levels?
 
Another build question… did you use all the mounting holes on the 3e audio heat sink. I note the actual board is screwed into some of them. It’s like 12 screws!

Did you also put thermal paste on the smps base?
Thanks
 
bugal said:
What about similar projects e.g. Hypex Nilai amp (2 amps + 1 PSU)? Which system would you prefer in terms of over performace/sound quality?
Click to expand...
For sure : best Sinad / quality price ratio = 3E Audio no way ))))
 
bugal said:
I have seen these figures - these are peak performance parameteres. In case of low- and mid-volume listening level there are also some other aspects which matter and shape the sound signature (thin vs heavy, tiny vs massive, etc.) and these are related to several various factors, not just PSU Watts, right?
For example, do you notice a difference in sound signature (heavy/thin, more/less bass etc.) between MP-H250S48 vs Micro-Audio PSU at low volume levels?
Click to expand...
In pratice : most of TPA3255 modules have a best THD+N figure with PSU set @34/36V. We shared measurements in previous thread.

Now regarding the Micro Audio. It brings a better dynamic in the low spectrum. This is purely subjective so could be fine to measure the combo 3E Audio + Micro Audio.... Any candidate here with a E1DA Cosmos ADC ?? -))
 
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brunes said:
Another build question… did you use all the mounting holes on the 3e audio heat sink. I note the actual board is screwed into some of them. It’s like 12 screws!

Did you also put thermal paste on the smps base?
Thanks
Click to expand...
You can use 4/6 screws should be ok
I am using a special thermal adhesive for most of my units with a heatspread. I tested its resistance with a load of more than 3KG and it is just impressive)
 
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For those who would like to follow, new project online :

www.audiosciencereview.com

"ASH-400 Project" Sylph Audio FB-100 Stereo Module with advanced PFFB

Hi amigos, I'm coming back to the forefront with a new project. This time I focused on the Sylph Audio FB100 module, based on a TPA3251 and an advanced implementation of the PFFB. Voltage Gain is factory set @ 14dB (5V/V) on this module. So I intended to couple it to my DAC SMSL D6s which has...
www.audiosciencereview.com www.audiosciencereview.com
 
@daniboun
I think this build could become very popular. It matches the needs of a many entry-level to mid-level hifi setups and speakers.

However, it would become even more popular if you could make a short but comprehensive video (Youtube) tutorial on how to build and connect the amplifier from the single parts.

This would convince me to order the parts and built it.
 
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