Thanks!
I finally ordered some Hypex boards, and will build an 8 channel using 8 UCD400 oem boards and a SMPS3ka400, 1 2 channel for my subwoofers with 2 ucd2k and 1 SMPS3ka700 and 1 2 channel stereo with 2 UCD400 OEM and 2 e-bay SMPS 600W. I would like to finalize my order for 3 cases, but have some questions.
The UCD400 OEM boards are already mounted on a L frame with a small heatsink. The orientation of the fins is made for a vertical mount on a bigger heatsink.
I am on the fence regarding the case. For the 2 channel ucd400 stereo I would simply go with a simple case (it's for use in my home gym) without any heatsink, a compact 'Galaxy GX288'. I would remove the extra heatsink and put it on the base plate.
For the 8 channel I would need to go for the bigger box with radiators, the 3U Dissipante 400. If I use no radiators, the Pesante 400 would also be fine
For the 2 channel subwoofer I could go with the 4U mini dissipante 400, so I have enough height to mount the SMPS on the side, or also a Pesante 400 (will have a lot of room left)
I have been measuring and calculating, and would be able to mount all amplifier modules of the 8-channel on the heatsink side panels, but the SMPS3kA700 would need to be in the middle.
For the subwoofer 'mini dissipante' I would be able to mount everything to the heatsink sides.
Dissipante cases are about 2,5x more expensive compared to Sepante cases (or about 100-150 euro per case depending on size). Sepante cases are also 7cm wider (so more space between components) and you can order an optional cover with a lot of extra holes for ventilation, which you can not do with the dissipante (so better ventilation 'inside').
Now I have some questions:
for the 8 channel UCD400 (which have an L with small heatsink)
- Are the heatsinks cosmetic or do they dissipate heat efficiently?
- Even in a Dissipante, the SMPS would be mounted in the middle and have no heatsink. Will this cool it enough?
- In the Dissipante you have the 'steel' and 'aluminium' option. Will the steel version be sufficient, as the amplifier boards are mounted on the sides? Aluminium is better at conducting heat, but not sure if it's important if only the SMPS is mounted to the bottom plate?
- Do I need the extra outside heatsink for the 8 channel or is the small heatsink on the boards enough? in other words, could I use the Sepante case and have the same performance? I would like to make sure I don't get into problems for 'cheaping out' now
for the 2 channel 2x UCD2K 1X SMPS3ka700, all mountable to the sides of a mini dissipante 400:
- Contrary to the above, the mini dissipante seems to be always in aluminium. It's 210 euro for the 4U 400, if I would take the standard dissipante 4U 400 in steel, it's 10 euro cheaper, but I would have A LOT of unused space in the middle (I could add another amplifier in there)
- Contrary to the above the UCD2K does not have any heatsink attached to it, but if I would add a heatsink, would a sepante also be good?
A lot of questions, but it makes a huge difference in costs (in each scenario is also 1 galaxy 288 4mm, with every sepante I also took the optional aluminium cover with extra ventilation holes, always 10mm front)
- all aluminium dissipante : 588 eur
- dissipante in steel (mini alu): 525 eur
- one 3U sepante, 4U min dissipante: 430
- 2 sepante: 260 eur
So without the galaxy, difference is 530 vs 205 euro, with the question off course if I gain some performance. (also, the dissipante cases look very very good, very nice design)
Thanks!!
PS for reference, I spent 1000 euro on all the components, will probably spend about 200 on 'nuts and bolts', cables, connectors (board are without any cables), better feet, binding posts, xlr, speakon, ... and want to make sure I make the right choice on the cases. Thanks!