jfuller Posted November 7, 2010 Share Posted November 7, 2010 Hi All. I've got a spirit F1 on the way with no PSU. I've found a site saying that it needs 17v at 0.6A (Centre Tapped), but I haven't been able to find a transformer for this anywhere. The closest ones that I've found are either 15v or 18v. Would the 18v one be close enough for the mixer not to make too much extra heat in the regulators, or would I be better going for the 15v one? Thanks Link to comment Share on other sites More sharing options...
KevinE Posted November 7, 2010 Share Posted November 7, 2010 If you want to make one yourself, choose a 15V transformer that is bigger than needed, the regulation will make it closer to 17V on part load anyhow. Either way it will probably be ok although the mixer regulators already tend to run warm with the genuine transformer, it has to be said! Link to comment Share on other sites More sharing options...
Sound Man Posted November 7, 2010 Share Posted November 7, 2010 Are you sure that the Spirit PSU has an AC output? David Link to comment Share on other sites More sharing options...
boatman Posted November 7, 2010 Share Posted November 7, 2010 You could actually go to Soundcraft and buy the right one! Clicky Link to comment Share on other sites More sharing options...
Mixermend Posted November 8, 2010 Share Posted November 8, 2010 Don't forget that you will have to get a transformer with twin secondary windings - as you need to end up with 17 - 0 - 17 volts AC. As previously mentioned, a 15 volt rating will be fine. If you go the DIY route - you will need to replace the PSU inlet connector on the mixer - as you won't be able to find the sort that Soundcraft use! Link to comment Share on other sites More sharing options...
jfuller Posted November 9, 2010 Author Share Posted November 9, 2010 Don't forget that you will have to get a transformer with twin secondary windings - as you need to end up with 17 - 0 - 17 volts AC. As previously mentioned, a 15 volt rating will be fine. If you go the DIY route - you will need to replace the PSU inlet connector on the mixer - as you won't be able to find the sort that Soundcraft use! I was aware of the need to replace the PSU connector, and was thinking of using one of the 'Locking multi pole connectors' here: CPC - Multipole Connectors thanks for the replies, Jack. Link to comment Share on other sites More sharing options...
boatman Posted November 9, 2010 Share Posted November 9, 2010 By the time you've done that, as well as boxing up the transformer in a suitable housing with the appropriate circuit protection and PAT testing, you'll probably be well over the cost of buying the correct power supply with the right connector from Soundcraft. Link to comment Share on other sites More sharing options...
Mixermend Posted November 9, 2010 Share Posted November 9, 2010 This type of connector is widely used on small (inexpensive) mixers. There have been previous discussions about replacing the Soundcraft connector, as it isn't very reliable - there isn't very much depth available on the mixer - but the CPC type will fit OK. This type of connector is becoming quite common as a power connector on various items - it is cheap and comes in various pin configurations. It is also seen on some US guitar amplifiers for the foot pedal cable. But it does need a name! What should we call it? If you do fit the 3 pin type (male panel mounting) and wire it appropriately - you might be able to use a Phonic or Behringer PSU - which produce the same voltage as the Soundcraft. Link to comment Share on other sites More sharing options...
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