This measurement is in Chassis with a Cobra S2 +-63v. This is with th 0v tied to the T-Ground PCB.
the only issue with Cobra is that it offers similar or bit better performance than Hypex, but with price tag almost two times higher 🙂
btw. where did you get these ground lift pcbs?
Only issue with hypex is the limited output voltage offerings, and truthfully I try to help out independents vs corporations as much as I can. The PCB's are designed by @stuartmp. I would also like to know @Cresnet opinion if he can weigh in here on the exact differences of Hypex vs Cobra if he has time so we are all clearer on the subject, as I think there is more to it.
Fireanimal,
Have you used/measured the SMPS1K-PFC or the smaller SMPS630G (mono block builds)?
The Mundorf caps are a big contributor to the added cost of Cobra.
smps1k-pfcr2-2
Have you used/measured the SMPS1K-PFC or the smaller SMPS630G (mono block builds)?
The Mundorf caps are a big contributor to the added cost of Cobra.
smps1k-pfcr2-2
The cobra offers an aux output up to 18v and that's a good option for an ssr speaker protection board...
I have not measured or used the 1K-PFC, but I have done a build with a pair of SMPS630 single output. And they measured good too. I agree on the Mundorf caps and they are not necessary unless you want to pay for jewelry. The standard caps and voltage regulators are sufficient.
6 Channel build see below.
6 Channel build see below.
I highly appreciate your efforts.
As you can see, all SMPS I offer uses the highest grade components, in addition to many functions that are not available in other SMPS units in the market.
For example..
1- Active PFC
2- Onboard 3W standby power supply
3- Trigger input
4- Standby control
5- 0.2W power consumption in standby mode
6- Higher grade components
7- Any output voltage is possible
8- Output voltage will remain the same beside your AC-LINE variation
9- Accepts up to 80000uF at the output
10- Onboard inrush current control and soft start
I believe that all of the above will come at some additional cost.
Groupbuy discount is possible if the quantity is above 20 PCs
Thank you
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Thanks, much appreciated. I want to chime in on the PFC this is one area the cobra really shines, I tested down to 80V AC line voltage and the output voltage held solid. So if you live in an area with bad / sagging AC this does make a huge difference.
Cresnet, I have trouble finding your current web site, can you plz update your Diyaudio.com profile?
Thanks
Thanks
Suggestion for sheet 2 on BOM:
Add a column on output semis, indicating if the choice supports UMS.
Add a column on output semis, indicating if the choice supports UMS.
@fireanimal I thought the point of UMS was that if you have a UMS drilled enclosure, then you dont have to drill or tap anything if you build another (UMS compatible) amp in that enclosure. It makes all the sense in the world for someone like me who does not have ANY metal tools, skills or workshop.
Correct if you are using TO3P outputs they bolt right on no issues with ef3-3 boards. Ef3-4 have a couple mounting holes that need drilled and the option of drilling to mount the drivers there as well. It's all in the build guide and the ums mounting near the end of the guide. TO264 are a larger package that's why they need to be located further from the board and require drilling.