Hi, building my first DIY amp. Planning for a 3 channel setup using a donor Parasound 5125 chassis & control boards, 500ASP + 2 ea 500A. I have the PS donor and the 500ASP in hand as well as all the harnesses. I'm waiting on the 500A's from PE to show up and I'm trying to get ahead with the wiring and prep work.
The 500ASP wiring is straight forward enough as far as I can tell. But I have a question on the power input for the 500A. Since I don't have the boards in hand I can't visually inspect or test for myself. The 500A datasheet and google fu seem to indicate that it only needs the 80V from the ASP, but looking at the connector spec, it says VP on pins 3,4 and PGND for 7,8.
So maybe I'm just overthinking this, but I'm a little worried about just trusting the documentation 100%. So according to the connector it says pins 3 and 4 get Vp, so which of these is correct:
1. The datasheet is whacked out and the hanger really should get 80V and 50V. In that case which pin is which?
2. The 500A does only need 80V and you should Y the 80V out from the ASP to both pins 3 and 4 on the 500A?
3. Pins 3 and 4 are connected on the 500A board and you only need 80V to one of them and can daisy chain the other hanger from the other pin?
4. I'm a dummy and am totally off base here.
On a side note, I found a guy with a very very cheap 5125 due to it having multiple failed channels. I was going to order a chassis for the build which was going to be about $150 plus I would need all the other parts. I got the 5125 for $100 shipped and after doing some troubleshooting I was able to save the control board and input controls, so I've been able to salvage the main power controls including the 12V trigger circuit and the auto on with signal. So coupling that with all the RCA connectors, output terminals and the nice spacious case I'm pretty pleased.
Appreciate any help with the question above.
Mike
The 500ASP wiring is straight forward enough as far as I can tell. But I have a question on the power input for the 500A. Since I don't have the boards in hand I can't visually inspect or test for myself. The 500A datasheet and google fu seem to indicate that it only needs the 80V from the ASP, but looking at the connector spec, it says VP on pins 3,4 and PGND for 7,8.
So maybe I'm just overthinking this, but I'm a little worried about just trusting the documentation 100%. So according to the connector it says pins 3 and 4 get Vp, so which of these is correct:
1. The datasheet is whacked out and the hanger really should get 80V and 50V. In that case which pin is which?
2. The 500A does only need 80V and you should Y the 80V out from the ASP to both pins 3 and 4 on the 500A?
3. Pins 3 and 4 are connected on the 500A board and you only need 80V to one of them and can daisy chain the other hanger from the other pin?
4. I'm a dummy and am totally off base here.
On a side note, I found a guy with a very very cheap 5125 due to it having multiple failed channels. I was going to order a chassis for the build which was going to be about $150 plus I would need all the other parts. I got the 5125 for $100 shipped and after doing some troubleshooting I was able to save the control board and input controls, so I've been able to salvage the main power controls including the 12V trigger circuit and the auto on with signal. So coupling that with all the RCA connectors, output terminals and the nice spacious case I'm pretty pleased.
Appreciate any help with the question above.
Mike
Ok, so I was able to answer my own question at the end of the day. I was looking at the Ghent harness kits and they have a good pic of their prebuilt dual 500A harness which clearly shows that they split the single 80V pin and the power ground into a pair of leads for each 500A.
