Folderol wrote:Without knowing what the connections are, it's virtually impossible to give you any realisitic assistance!
All the important bits are on page 7 of the SMPS400 data sheet:
http://www.hypex.nl/docs/SMPS400_datasheet.pdf
As I mentioned once or twice though, it has changed a lot since I nailed mine together.
But essentially...
J1, I believe you can ignore for 240v use.
J2, 240v Mains input. Do not cock this up! Thats on pins 1 & 3. The colour coded cables you got should make it clear what goes where on here. It goes without saying that this needs to be a good, solid and properly insulated connection.
I'd route the live wire through the fuse and power button, then on to the SMPS.
J3, Has the 3 voltage outputs that go to the amp module/s. Pin 1 = +v, Pin 2 = ground, Pin 3 = -v
Pin 4 won't be connected to anything (Its for a different type of amp module)
Pin 5 of J3 is the auto amplifier enable, which I believe is where the thin black wire from the UcD input cable goes.
As you are using only 1 SMPS, I would wire them both to the same pin.
J5, Pin 3 = Aux + output (21) volts to drive your power led. This will go to that resistor I mentioned earlier in the thread, then on to the positive leg of the LED in your power button. The - leg of the LED would then be returned to pin 5 of J5.
This J5 connector appears to have a lot of surplus pins on it, which appear to be for optional things. Im pretty certain you can ignore the unused pins, for now at least.
J6, Using this is purely optional, but this should have 2 pins, and is there for error sensing. You can take a signal/wire from the positive speaker output on the amp module, and route it to pin 1 (Pin 2 for the other channel). If the SMPS see's nasty DC there or whatever, it will shut down, hopefully preventing further damage. I connected these.. But you don't have to. Make sure each channel goes to pin 1 and 2 respectively though. Not to the same pin! Or at best, your amp will sound strangely mono..
As for grounding.. I read this varies some, depending on balanced, or unbalanced use. I made my amp as balanced, but then used an unbalanced phono adapter with it! So I wasn't sure exactly what to do about grounding.. Basically, if I was in any doubt, I grounded it anyway. And it works! No smoke, no nasty noises..
The connections on the amp modules themselves I believe are more self explanatory than they are for the SMPS power supply.
PLEASE keep in mind though, that although your amp will be very similar to mine, it is by no means exactly the same, so don't take my advice as gospel, and at the very least, go over the details yourself to make sure it all makes sense. Better yet, perhaps have someone more knowledgeable than the both of us, go over it too.
IE, If your amp goes up in smoke, you haven't seen me!
Keep us posted on how it goes!
In fact most of those vandal proof style switches are non latching. It's a bit tricky to find a latching one that is also man enough for the job, with respect to current etc.
