Wisnaeme Posted September 4, 2011 Share Posted September 4, 2011 Hi guys,I'm trying to find a power supply for an old Soundcraft Spirit Live. It was just donated to me andI plan on using it as another backup desk. Do you know what PSU this is meant to use?I have the manual and it makes no mention of the required supply. I believe this is a standardsupply at 17-0-17 with 48V phantom, suspecting the PSU is the CPS150. Can you confirm my suspicion that the CPS150 is the correct device? Does anyone (In the UK) have a spare PSU available for sale? Thanks,Robert Link to comment Share on other sites More sharing options...
bruce Posted September 4, 2011 Share Posted September 4, 2011 Not sure about the basic "Spirit live", but the "live 4" used the CPS125 on the 32 channel frame, and the DCP100 on the smaller frames. Link to comment Share on other sites More sharing options...
mutley Posted September 4, 2011 Share Posted September 4, 2011 This page of Soundcraft's website will tell you exactly which power supply you need... Soundcraft PSU Lookup Link to comment Share on other sites More sharing options...
Wisnaeme Posted September 4, 2011 Author Share Posted September 4, 2011 I checked around that page, but the desk isn't listed anywhere. http://www.blue-room.org.uk/public/style_emoticons/default/unsure.gif Having now taken the desk apart for basic checks on faders and pots, it appears in good condition.I've metered out the power connector and checked the channel strips to identify the power feeds. The power is fed to the TL072's through 10ohm resistors, as this IC is max 18v-0-18v the power fed fromthe PSU must be 15-17v split. The Phantom feed is a very simple 47uF 63v capacitor with a parallel12K resistor. This feeds to the channel strips, then the Mic ports through a pair of 6k8 resistors. The phantompower goes nowhere else on the board. So I suspect the power supply must be a well regulated unit with split 17v and a 48v DC feeds.The desk has no regulation on board and barely any smoothing which is surprising. I think I'll be powering up the bench supply later today to get the desk running for complete checks. I'll worry aboutphantom power once the desk is tested. Thanks for the feedback guys. http://www.blue-room.org.uk/public/style_emoticons/default/smile.gif Link to comment Share on other sites More sharing options...
dbuckley Posted September 4, 2011 Share Posted September 4, 2011 I saw a Spirit Live 16 channel a little while back, and was surprised to nitice it used the same power supply as my old Seck 18-8-2, and a google gives this, which has helpful photos. http://www.ebay.com/itm/Vintage-Seck-Mixing-Console-Power-Supply-Mixer-PS-PSU-/200582561859 Oh yes, and a schematic... Link to comment Share on other sites More sharing options...
J Pearce Posted September 5, 2011 Share Posted September 5, 2011 Most of the old spirits just need 17 0 17 and 48, all well regulated and smoothed as there's little power control in the desk. You could look on eBay for any desk power supply with the right voltages, it wouldn't be hard to add extra smoothing if you had to. Link to comment Share on other sites More sharing options...
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