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"Bamboo Project" : Dual Mono 3E Audio 480-1-29A Amplifier

brunes

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Jst 3 iore connector
 

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daniboun

daniboun

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That is why I would appreciate a close photo to see exactly what is shown at the white plastic component on the board, assuming that is the contact point for the 3 pins of the XLR socket ? Thanks.

Here goes :

1712934059077.png
 

Overseas

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My stuff is on the way from Audiophonics :)

As I am an impulsive audio enthusiast ( hahaha), also completely non technical (otherwise I would not be an enthusiast...), can someone clarify for me what am I going to get from my project (in terms of power specs) that is mainly:

3E AUDIO 480-1-29A PFFB Mono amplifier Module

plus

MP-H250S48 SMPS Switching Mode Power Supply Module 250W 48V 5A PFC


That's because I had a look at Amir review but I am still confused, there were mixed things there plus I am not good at graphs.

So what Power/Mono Channel (8/6/4/2 ohms) at what distorsion, considering the specific power source listed above ?
My speakers are rated for as low as 3.3 ohm at minimum (Triagle Australe Esprit EZ).

Thank you for your patience.
 
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Overseas

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Just want to show the module comes with a small kit, including the connection for the output socket.
IMG_20240416_170733.jpg
 

Kevinfc

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Get a combo XLR / TRS plug and that s it )
I will share you the wiring diagram )

My concern is drilling the hole to accept such a fitting.

I’d certainly prefer this to a simple TRS jack, but it appears that three holes per jack must be drilled in a very tight area. Is this the case? If so, how did you accomplish it, any tips?
thanks
 
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daniboun

daniboun

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My concern is drilling the hole to accept such a fitting.

I’d certainly prefer this to a simple TRS jack, but it appears that three holes per jack must be drilled in a very tight area. Is this the case? If so, how did you accomplish it, any tips?
thanks


Drilling is not difficult with the right tools )
I am driiling all my cases with this.(22mm)
Use a drill at moderate speed !

If you want to project the positioning of your XLR plug use a 20 euro cent coin (they are 22mm like the XLR plugs)

 
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Overseas

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I am going forward with my project: 2 monos with separate power sources, no cases.

Just discussed it with the 'project master' (aka my cousin that will do the soldering), so we are good.
Deadline not clear anyway.

Questions:
1. using exactly same modules, power included - as here - no air cooling required, right ?
2. as I checked, no soldering to the module itself is required, all pieces (speakers out etc) will fit with special connector of various types ( I do not know tehcnical English)
3. module is configured for mono use (PBTL ?), so in such scenario no modification of the board is required
4. what cable should I use for connecting the speakers sockets, I am going with same cable I use for speakers that is:
(I even intend to use it Y split, so no distinct red/ black wires.... no impact on soound, hahahaaa).

Thanks
 
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daniboun

daniboun

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I am going forward with my project: 2 monos with separate power sources, no cases.

Just discussed it with the 'project master' (aka my cousin that will do the soldering), so we are good.
Deadline not clear anyway.

Questions:
1. using exactly same modules, power included - as here - no air cooling required, right ?
2. as I checked, no soldering to the module itself is required, all pieces (speakers out etc) will fit with special connector of various types ( I do not know tehcnical English)
3. module is configured for mono use (PBTL ?), so in such scenario no modification of the board is required
4. what cable should I use for connecting the speakers sockets, I am going with same cable I use for speakers that is:
(I even intend to use it Y split, so no distinct red/ black wires.... no impact on soound, hahahaaa).

Thanks


1) you dont need air cooling. You probably wont use it @1 % THD
2) The module is using 6.3mm faston sockets for all input/output
3) Mono version is set in PBTL mode
4) Any 1.5 or 2mm2 good quality cables for speakers. Keep it as short as possible and twist it )
 
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daniboun

daniboun

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Overseas

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Drilling is not difficult with the right tools )
I am driiling all my cases with this.(22mm)
Use a drill at moderate speed !

If you want to project the positioning of your XLR plug use a 20 euro cent coin (they are 22mm like the XLR plugs)

No 22 mm, but 24 mm.
Only worked for 24 mm, as I also measured right on the socket.
 

activewire

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Daniboun you impress me as being a very thoughtful person who makes precise and intentional design decisions. Can you share your reasoning to choose XLR with push release for the bamboo Stereo amp, but no push release on XLR for this dual mono build?
 
OP
daniboun

daniboun

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Daniboun you impress me as being a very thoughtful person who makes precise and intentional design decisions. Can you share your reasoning to choose XLR with push release for the bamboo Stereo amp, but no push release on XLR for this dual mono build?

In all sincerity, I choose the connectors based on the stocks available from my supplier) There is no difference in performance so the choice will be up to the end consumer
 
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