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Post by Quint on Jul 27, 2020 13:14:44 GMT -6
Has anybody here compared both of the supplies (switching and linear) that CAPI offers for their racks? I'm getting to a point where I need another rack and was finally going to get around to building one of these.
The linear PSU was always what I had planned to build but the switching supply is interesting because it costs less, takes up less room, and I also don't have to build it.
If the linear is clearly better than the switching, I will probably go ahead and go that way. I know I've seen people talk about using one or the other, but I was curious if anybody has compared the two directly? Why should I still buy the linear PSU kit, given the advantages of the switching PSU? Jeff says they are just as good as the linear, with the proper filtering in the rack.
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Post by svart on Jul 27, 2020 13:21:02 GMT -6
Has anybody here compared both of the supplies (switching and linear) that CAPI offers for their racks? I'm getting to a point where I need another rack and was finally going to get around to building one of these. The linear PSU was always what I had planned to build but the switching supply is interesting because it costs less, takes up less room, and I also don't have to build it. If the linear is clearly better than the switching, I will probably go ahead and go that way. I know I've seen people talk about using one or the other, but I was curious if anybody has compared the two directly? Why should I still buy the linear PSU kit, given the advantages of the switching PSU? Jeff says they are just as good as the linear, with the proper filtering in the rack. I'm not sure many folks will have tried both, but I offer this insight. I have a 500 rack and for the longest time I used a SMPS from a mixer to power it. The SMPS was my spare for my mixer and when the primary supply died and needed repair, I had to use the one I was powering the rack with. I bought one of CAPI's first linear supply PCBs to build since I had a lot of the parts already and I noticed no difference in the rack gear performance or noise at all. I'd expect that if Jeff sells a SMPS for their racks, it's top notch and been tested thoroughly and wouldn't worry about it at all. |
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Post by Quint on Jul 27, 2020 14:00:25 GMT -6
Has anybody here compared both of the supplies (switching and linear) that CAPI offers for their racks? I'm getting to a point where I need another rack and was finally going to get around to building one of these. The linear PSU was always what I had planned to build but the switching supply is interesting because it costs less, takes up less room, and I also don't have to build it. If the linear is clearly better than the switching, I will probably go ahead and go that way. I know I've seen people talk about using one or the other, but I was curious if anybody has compared the two directly? Why should I still buy the linear PSU kit, given the advantages of the switching PSU? Jeff says they are just as good as the linear, with the proper filtering in the rack. I'm not sure many folks will have tried both, but I offer this insight. I have a 500 rack and for the longest time I used a SMPS from a mixer to power it. The SMPS was my spare for my mixer and when the primary supply died and needed repair, I had to use the one I was powering the rack with. I bought one of CAPI's first linear supply PCBs to build since I had a lot of the parts already and I noticed no difference in the rack gear performance or noise at all. I'd expect that if Jeff sells a SMPS for their racks, it's top notch and been tested thoroughly and wouldn't worry about it at all. I figured there probably weren't many who had done a direct comparison, but that it might be worth asking, just in case. I'm with you on the quality of stuff that Jeff sells. It also would certainly save me some money in the short and long term. |
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Post by Blackdawg on Jul 27, 2020 14:30:55 GMT -6
Could always get the filtering version if you are worried. It has extra filtering caps in the rack to augment the SMPS.
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Post by Quint on Jul 27, 2020 14:33:52 GMT -6
Could always get the filtering version if you are worried. It has extra filtering caps in the rack to augment the SMPS. That's definitely the one I was going to get if I decided to go with the SMPS, as Jeff recommends that one. |
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Post by Blackdawg on Jul 27, 2020 14:35:10 GMT -6
Could always get the filtering version if you are worried. It has extra filtering caps in the rack to augment the SMPS. That's definitely the one I was going to get if I decided to go with the SMPS, as Jeff recommends that one. I bet it'll be good then. I wouldn't worry much about it. |
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Post by jcgriggs on Jul 27, 2020 14:41:40 GMT -6
Could always get the filtering version if you are worried. It has extra filtering caps in the rack to augment the SMPS. That's definitely the one I was going to get if I decided to go with the SMPS, as Jeff recommends that one. I have 2 CAPI racks running off a linear supply and a third (with the extra filtering) using the swtching supply that CAPI sells. I have not noticed a difference, but I have not done a detailed comparison and I do not claim to have the best ears. Also, the third with the switching supply is not fully populated (yet).
I would have no hesitation recommending the filtered supply and extra filtering for a single rack, but I'd still recommend the linear supply if you buy in pairs - it is simpler in that case and rock solid.
Hope this helps, John
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Post by mulmany on Jul 27, 2020 21:51:02 GMT -6
I have both. Haven't noticed any difference. I have one of the older unfiltered racks running off Jeff's SMPS and don't notice anything different, but I have not done a real analysis of the noise or anything.
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Post by Quint on Jul 27, 2020 22:31:37 GMT -6
Well, shit. I guess I'll just go the SMPS route then. Y'all are convincing me.
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Post by mulmany on Jul 27, 2020 22:40:54 GMT -6
Well, shit. I guess I'll just go the SMPS route then. Y'all are convincing me. And just to clarify, I have 5 500 racks. 4 capi - 1xAPI, 2x 51x, 1x API filtered 1 OSD - API I was building a big custom psu for my 500 rack but stalled out, so I just bought 2x of Jeff's SMPS. Needed to get the racks up and running before I had finished the custom PSU. |
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Post by jsteiger on Aug 1, 2020 19:35:37 GMT -6
If I’m not mistaken the smps is made by Danderloo. Sold by Jeff This is not accurate. I'm 99.9% sure they come from the same place in China as do the Radial and API SMPS. |
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Post by tasteliketape on Aug 1, 2020 20:13:05 GMT -6
I’ll delete it . I thought Dan made one
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Post by drbill on Aug 1, 2020 22:23:06 GMT -6
I have 4 CAPI racks - with 2 linear supplies, and 1 SMode supply. I have the Dan Deurloo Filter before power hits the rack on the switch mode supply. That def cleans things up. I can't tell the difference between, but I haven't done a "detailed" shootout. They just both sound fine to me. Dozens and Dozens of 500 modules from all over. No problems.
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Post by jsteiger on Aug 1, 2020 22:32:09 GMT -6
I’ll delete it . I thought Dan made one All good man! We sell the same SMPS. He has his own filter though. |
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