I'm a newbee, but thought this would have been straight forward. I'm hoping someone can help me with this.
I purchased this Cerwin Vega amp from ApexJr.
http://apexjr.com/Cerwinfullrange.htm
The amp uses 220v inputs. Since I live in North America I purchased a new 110v 600VAC transformer to swap out (I plan on running 3 of these CV boards off of the one transformer).
http://apexjr.com/Genesis.htm
The old 220v transformer 48v secondary uses 3 wire is CT (48-0-48), but the secondary on the New transformer is 0-45V + 0-45V
I attempted to connect the 45v primaries by joining the neutral wires together, and connecting them to the black neutral input of the CV board, then connecting the remaining +45V's to the +&- 45v inputs on the CV board. (This blew my fuse).
The only way I was able to get the board to power up without blowing the fuse was by joining all 45V wires from the transformer and the CV board and doing the same with all of the neutral wires from the transformer and board. I expected this to blow another fuse, but it didn't. The amp powers up and plays.
Is there a better way of connecting this transformer to this board? Am I likely destroy the board / transformer or home the way it's connected now?
Thanks for your help!
I purchased this Cerwin Vega amp from ApexJr.
http://apexjr.com/Cerwinfullrange.htm
The amp uses 220v inputs. Since I live in North America I purchased a new 110v 600VAC transformer to swap out (I plan on running 3 of these CV boards off of the one transformer).
http://apexjr.com/Genesis.htm
The old 220v transformer 48v secondary uses 3 wire is CT (48-0-48), but the secondary on the New transformer is 0-45V + 0-45V
I attempted to connect the 45v primaries by joining the neutral wires together, and connecting them to the black neutral input of the CV board, then connecting the remaining +45V's to the +&- 45v inputs on the CV board. (This blew my fuse).
The only way I was able to get the board to power up without blowing the fuse was by joining all 45V wires from the transformer and the CV board and doing the same with all of the neutral wires from the transformer and board. I expected this to blow another fuse, but it didn't. The amp powers up and plays.
An externally hosted image should be here but it was not working when we last tested it.
Is there a better way of connecting this transformer to this board? Am I likely destroy the board / transformer or home the way it's connected now?
Thanks for your help!
DarpMalone said:
Sounds like you may have phased it wrong
If you call it 45 - 0 / 45 - 0, the right wire of one winding connects to left wire on other winding, and is now center tap ground
I know the phase can be measured but dont know how
Maybe induction will tell, I dont know
Otherwise you need a wire scheme from manufactor
Sometimes theres also double primary
http://www.amplimo.nl/download/970xx.pdf
But hey, if it works you may have been lucky
Disconnect everything!
You need to sketch a diagram of your transformer primaries and secondaries to help you see what's happening (like one of these). You have missed something fundamental if you are hooking anything from the primaries (as you say) to the input of the CV board. Can you show a picture of the transformer wiring?
You need to sketch a diagram of your transformer primaries and secondaries to help you see what's happening (like one of these). You have missed something fundamental if you are hooking anything from the primaries (as you say) to the input of the CV board. Can you show a picture of the transformer wiring?
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