Hi Fab
I used the same pcb on my built, one member on this forum (Sachu888) had some for sale. I believe Prasi has recently created a pcb based on Juma’s work.
Eric
I used the same pcb on my built, one member on this forum (Sachu888) had some for sale. I believe Prasi has recently created a pcb based on Juma’s work.
Eric
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Hi Eric
The one from Prasi is nice but is without the rectifier diodes. With diodes bridge pack it is not a problem but when using fast transient soft recovery diodes a pcb is very useful to install these diodes...
I will look for Sachu pcb in the mean time..thanks for the info.
Fab
The one from Prasi is nice but is without the rectifier diodes. With diodes bridge pack it is not a problem but when using fast transient soft recovery diodes a pcb is very useful to install these diodes...
I will look for Sachu pcb in the mean time..thanks for the info.
Fab
Jean Hiraga Build
I built the amp that Sachu888 profiled. Nice PCBs and the case came together well, all fitted very easily.
I added additional capacitors to each rail. 1 * 33000uF, 5 * 1000uF and 5 * 470uF as was suggested.
I also put a voltmeter on each rail and extended power supply LEDs to front as a bit of bling.
I am running it at 15VDC.
It runs really cool, only a couple of degrees above ambient.
Sound quality is brilliant. I am delighted with the build.
Fantastic effort from those that designed this versions PCBs, PSUs, Case and heatsinks. My ears love your work!
I built the amp that Sachu888 profiled. Nice PCBs and the case came together well, all fitted very easily.
I added additional capacitors to each rail. 1 * 33000uF, 5 * 1000uF and 5 * 470uF as was suggested.
I also put a voltmeter on each rail and extended power supply LEDs to front as a bit of bling.
I am running it at 15VDC.
It runs really cool, only a couple of degrees above ambient.
Sound quality is brilliant. I am delighted with the build.
Fantastic effort from those that designed this versions PCBs, PSUs, Case and heatsinks. My ears love your work!
Nice pics, Sadik. Is your new built PSU still based on the capacitance multiplier? Can you point links to where you bought the Amp and PSU kits? Thanks.
le monstre PSU
Just an update on my le monstre build, i needed to place heatsinks on the rectifiers but needed a way to hold them on. To buy clips for transistors was really expensive, couldn't believe what they charge up to £2-3 (3 euros) for one clip?!! so i had this brainwave idea of using heavy duty bulldog paperclips which work brilliantly and just as good, best of all it cost me just £5 for 20 of them!
next was to stack the transformers, so i used my 3d printer to make a simple holder and shelf.
Worked out well, next is to build the chassis.
Just an update on my le monstre build, i needed to place heatsinks on the rectifiers but needed a way to hold them on. To buy clips for transistors was really expensive, couldn't believe what they charge up to £2-3 (3 euros) for one clip?!! so i had this brainwave idea of using heavy duty bulldog paperclips which work brilliantly and just as good, best of all it cost me just £5 for 20 of them!
next was to stack the transformers, so i used my 3d printer to make a simple holder and shelf.
Worked out well, next is to build the chassis.
Nice work! 😎 A piece of audio art that is!
Of course we are miles away from Jean Hiraga’s Le Monstre 8 watter !
Of course we are miles away from Jean Hiraga’s Le Monstre 8 watter !
Hi,
the idea of that power supply is to connect power diodes from down side so than it will be much easier to connect it to any heatsink...Than you can use any flat aluminium board for heatsink which can cover whole area of Power supply .Very good work. br,
Igor
the idea of that power supply is to connect power diodes from down side so than it will be much easier to connect it to any heatsink...Than you can use any flat aluminium board for heatsink which can cover whole area of Power supply .Very good work. br,
Igor
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Thanks Igor, yea i gathered that. This seemed like the best way as i want to build a slim amplifier and have the PSU stacked. Next is placing the 12v transformer, speaker protection unit and soft start! Again ill 3D print suitable brackets for them and then use sheet metal to form the case.
😀 Im trying to build something that looks different! True not like the original Hiraga idea!
Transistor placement
Just quick one, thoughts on transistor placement?
This one above means i have to drill and tap it
Where is this one i just need to bolt it down and solder some wires. I prefer this, also i think the heat will transfer better.
placement of soft start, speaker protection and 12v tansformer
Just quick one, thoughts on transistor placement?
This one above means i have to drill and tap it
Where is this one i just need to bolt it down and solder some wires. I prefer this, also i think the heat will transfer better.
placement of soft start, speaker protection and 12v tansformer
![2018_09_01 [03].jpg](/community/data/attachments/645/645323-30b8773cc7f3244747c82bf362378f8b.jpg?hash=MLh3PMfzJE)
![2018_09_01 [04].jpg](/community/data/attachments/645/645332-0293ec09530618fa161ef08d092d91a0.jpg?hash=ApPsCVMGGP)
![2018_09_01 [06].jpg](/community/data/attachments/645/645341-1d8641594bf57d1b9737a38870fef54b.jpg?hash=HYZBWUv1fR)
![2018_09_03 [02].jpg](/community/data/attachments/645/645348-6636ecd87edfcd0c4327577cba7ced0e.jpg?hash=Zjbs2H7fzQ)
Transistor Placement
I built a Le Monstre last year and had the same problem mounting the output transistors. In the end I decided to wire them to either side of the pcb, and then said, I might as well put them into the centre of the heatsink and extend the wires a little more. My Electronics adviser said no no no not to do it like that but I did.
I must say this is the most incredible sounding amp I have ever heard, it has everything I ever wanted from music.
See the attached image of what I ended up doing. I would certainly do it again without hesitation.
I use this amp daily and the hottest I have ever had the sinks was 32c and the ambient was mid twenties and it was on for hours.
Prasi's PCB's for the power supplies and are fantastic. Now I just listen to the music without listening or looking for ways to "improve" the sound. The Preamp is Salas DCG3 and it is also a work of art!
I built a Le Monstre last year and had the same problem mounting the output transistors. In the end I decided to wire them to either side of the pcb, and then said, I might as well put them into the centre of the heatsink and extend the wires a little more. My Electronics adviser said no no no not to do it like that but I did.
I must say this is the most incredible sounding amp I have ever heard, it has everything I ever wanted from music.
See the attached image of what I ended up doing. I would certainly do it again without hesitation.
I use this amp daily and the hottest I have ever had the sinks was 32c and the ambient was mid twenties and it was on for hours.
Prasi's PCB's for the power supplies and are fantastic. Now I just listen to the music without listening or looking for ways to "improve" the sound. The Preamp is Salas DCG3 and it is also a work of art!
Attachments
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