Hi
I am a completely newbie so this might be a really dumb question but anywho... I upgraded a pair of nuforce amplifiers recently that left me with 2 unused ampboards that I thought I could use to build a descent stereo-amp with if possible! So my question is can I use a psu from another manufacturer (like hypex) or do I need to stick to the psu made originally for that ampboard? Is there any particulars that I need to check to see if they are compliant or is it:"just forget about it!".
These ampboards are load invariant (dunno if that makes a difference)
Regards
/Johan
I am a completely newbie so this might be a really dumb question but anywho... I upgraded a pair of nuforce amplifiers recently that left me with 2 unused ampboards that I thought I could use to build a descent stereo-amp with if possible! So my question is can I use a psu from another manufacturer (like hypex) or do I need to stick to the psu made originally for that ampboard? Is there any particulars that I need to check to see if they are compliant or is it:"just forget about it!".
These ampboards are load invariant (dunno if that makes a difference)
Regards
/Johan
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Any manufacturer's PSU should be fine as long as it meets the required specs. Do you have the model number of the amp boards and are the specs available?
Thanks a mill for taking the time🙂, They are Nuforce ref 9 V2 SE amp boards: I found these specs in a review of them from here :
Power/Load 8 ohm 4 ohm 2 ohm
Peak Power (20 msec hold time)
RMS Power 190W 300W 300W
Power bandwidth: 100 to 20 kHz +/- 0.8 db 10 Hz -0.5 db 60 kHz -3 db
THD+N = 0.03%, 1kHz, 10W
Input impedance: 45K ohm
Gain: 27 db
SNR = 100 db at 100W
I have been looking at the Hypex smps 600 (delivers 600 W) or a Hypex SMPS1200A700 and thinking of a single PSU for both ampboards. From what I have read the Hypex kits have got great reviews so I am thinking their PSUs might be a great choice as well or are there "smarter" solutions?
Regard
/Johan
Power/Load 8 ohm 4 ohm 2 ohm
Peak Power (20 msec hold time)
RMS Power 190W 300W 300W
Power bandwidth: 100 to 20 kHz +/- 0.8 db 10 Hz -0.5 db 60 kHz -3 db
THD+N = 0.03%, 1kHz, 10W
Input impedance: 45K ohm
Gain: 27 db
SNR = 100 db at 100W
I have been looking at the Hypex smps 600 (delivers 600 W) or a Hypex SMPS1200A700 and thinking of a single PSU for both ampboards. From what I have read the Hypex kits have got great reviews so I am thinking their PSUs might be a great choice as well or are there "smarter" solutions?
Regard
/Johan
Does the switching frequency in the psu matter?
It seems that the original nuforce psu has a higher switching frequency ( 500 kHz) from what I have read and the hypex PSU's (100 kHz)
It seems that the original nuforce psu has a higher switching frequency ( 500 kHz) from what I have read and the hypex PSU's (100 kHz)
I believe they are 48V! ( according to an interview with the founder and this ad for V2 boards
Regards
/Johan
Regards
/Johan
So that rules out smps600 leaving smps1200A180 as option, the a700 version is +/-85V. But better be certain what you need, just +/-48V or maybe different voltages too for other parts of ampboard ????
Thank you so much!
Is there any specifics that I should look for on the board itself like any other Voltage connections.
There is a lack of info about these amp boards online and there is no support for diy-projects from nuprime (former nuforce) so I will have to draw conclusions from taking a look the board itself!
In the upgrade manual however ( instructions for switching the amp boards) they are talking about a 5V and a 52V ground. Can I draw any conclussions from that.
Regards
/Johan
Is there any specifics that I should look for on the board itself like any other Voltage connections.
There is a lack of info about these amp boards online and there is no support for diy-projects from nuprime (former nuforce) so I will have to draw conclusions from taking a look the board itself!
In the upgrade manual however ( instructions for switching the amp boards) they are talking about a 5V and a 52V ground. Can I draw any conclussions from that.
Regards
/Johan
Hmmm I might be wrong about the operating voltage, it seems to be 52V, the 48V was for small stock that had problems with overheating due to the dc/dc converter.
If you still have the original power supply, maybe we could help you measure the voltages if you have a multimeter and can post a hi res image of the PSU.
I took some photos of the psu board and there are 6 'connectors' on the bottom of the board that are marked :
* +5V
* GND
* GND
* GND
* 48V
* 48V
Here is a picture of the psu board itself
And here is closer look of the 'connectors' on the psu board
So what conclusions can I draw from this, is it 48V or is 48+5=53V or do I need to measure it?
Regards
/Johan
* +5V
* GND
* GND
* GND
* 48V
* 48V
Here is a picture of the psu board itself
And here is closer look of the 'connectors' on the psu board
So what conclusions can I draw from this, is it 48V or is 48+5=53V or do I need to measure it?
Regards
/Johan
Attachments
Looks like a 48v and 5v single rail made by Skynet. Is there a model number near where it says Skynet? Should start with SNP. Can you take another photo showing all parts of all the boards?
@irrebo, you are probably right 🙂 , according to this russian nuforce site it is SNP-Z30 in the ref 9 v2se amp.
pcb shows Z30Y, maybe some differences to drive capacitor bank, higher capacitance, Nuforce wanted
Where is the 5V (thin red wire??) connected, series connected to the black wire ? Or separately?
Where is the 5V (thin red wire??) connected, series connected to the black wire ? Or separately?