Dual-500 king of the Castle

In any case, would you be willing to build a board and let me populate it with your parts list. I am a big fan of not recreating the wheel. You have created a great solution/product; not unlike wattsabundant and the DC Protect Delay/Relay. We should make these the defacto standard soft-start circuit board here at Phoenix.

I spoke to Joe about soft start boards for the heavily modified PL700B amps, but Joe felt a soft-start board was not necessary and I agreed with him. But the modified Dual 500 is a whole different animal...
If you are not interested in becoming a multi-millionaire for selling boards like wattsabundant, that is totally cool. Could you post a link to the ebay website that you used.

Thanks,
Mark
 
mlucitt said:
In any case, would you be willing to build a board and let me populate it with your parts list. I am a big fan of not recreating the wheel. You have created a great solution/product; not unlike wattsabundant and the DC Protect Delay/Relay. We should make these the defacto standard soft-start circuit board here at Phoenix.

I spoke to Joe about soft start boards for the heavily modified PL700B amps, but Joe felt a soft-start board was not necessary and I agreed with him. But the modified Dual 500 is a whole different animal...
If you are not interested in becoming a multi-millionaire for selling boards like wattsabundant, that is totally cool. Could you post a link to the ebay website that you used.

Thanks,
Mark
Click to expand...


With the custom builds Glen does, I would imagine he hasn't documented each and every nuance and having him build you a 500 would be easier. I know i never documented many things I have done.
 
E-I transformers are naturally gapped so they do not suffer the start-up saturation issues that toroids do.

Thus they do not need a soft start but if you like them they will do no harm as long as they are relay based (not thyristor based) with a relay that is truly capable of supporting your load. :)
 
mlucitt said:
In any case, would you be willing to build a board and let me populate it with your parts list. I am a big fan of not recreating the wheel. You have created a great solution/product; not unlike wattsabundant and the DC Protect Delay/Relay. We should make these the defacto standard soft-start circuit board here at Phoenix.

I spoke to Joe about soft start boards for the heavily modified PL700B amps, but Joe felt a soft-start board was not necessary and I agreed with him. But the modified Dual 500 is a whole different animal...
If you are not interested in becoming a multi-millionaire for selling boards like wattsabundant, that is totally cool. Could you post a link to the ebay website that you used.

Thanks,
Mark
Click to expand...

Mark, I' have some factory speaker relays..iffn ya need some..
 
Thanks, Lee. I would be using a Finder relay that is rated at 16 Amps @ 250V from my parts bin. That one is good up to 4000 Watts per set of contacts. And if I use both sets of relay contacts for the Line wire I can double that rating to 32 Amps and 8000 Watts.
It has a 24VDC coil. I think that is pretty common.
I will also be using a RC network across both sets of contacts, 15uF 250V AC film capacitors (Mouser 598-ALH156K251B064) and 2500 Ohm 10 Watt resistors (Mouser 588-40F2K5E) to suppress the induction current across both sets of contacts.

Thoughts?
 
I agree the 700‘s have no need for a soft start. The d500 with the big caps draw a lot on startup (20 plus amps) and the amp grunts a bit. With the soft start it is only drawing initially 5-6 amps and when the relay kicks on it goes to about 10 amps for a microsecond and goes to about 4 amps till the caps are charges. The whole proc takes about 1 second or less to cycle the startup.
 
mlucitt said:
In any case, would you be willing to build a board and let me populate it with your parts list. I am a big fan of not recreating the wheel. You have created a great solution/product; not unlike wattsabundant and the DC Protect Delay/Relay. We should make these the defacto standard soft-start circuit board here at Phoenix.

I spoke to Joe about soft start boards for the heavily modified PL700B amps, but Joe felt a soft-start board was not necessary and I agreed with him. But the modified Dual 500 is a whole different animal...
If you are not interested in becoming a multi-millionaire for selling boards like wattsabundant, that is totally cool. Could you post a link to the ebay website that you used.

Thanks,
Mark
Click to expand...
Oh
just one million dollars?8DF2493A-21D0-4FB6-8C44-D2C2350EA4AA.jpeg
 
grapplesaw said:
Watch this video if you are wanting to see the PA2 setup and how it works


also you xan see what the Tane has for adjustments in the photoView attachment 60124
Click to expand...
Reading over this thread and it has been a good one. Question. Using the Rane or other electronic crossovers do you wire straight adapters for the XLR to RCA as the PL amps far as I know have no balanced inputs. If so, how do you wire those?
 
VSAT88 said:
Reading over this thread and it has been a good one. Question. Using the Rane or other electronic crossovers do you wire straight adapters for the XLR to RCA as the PL amps far as I know have no balanced inputs. If so, how do you wire those?
Click to expand...
It does let you wire the inputs for unbalanced input / output. there are many ways to change both inputs and out put for balance cables. Both electronically and with transformers.
 
I had a really good phone conversation with grapplesaw the other day. I forgot he was in Vancouver, British Columbia. I told him about my only visit to Vancouver in the 1980's and a side trip to drive-by the home of Ann and Nancy Wilson of Heart in Tsawwassen, BC.
We talked about the venerable D500 and grounding issues, wire routing techniques, and general Phase Linear trivia.
What a great guy, and smart too!
 
mlucitt said:
I had a really good phone conversation with grapplesaw the other day. I forgot he was in Vancouver, British Columbia. I told him about my only visit to Vancouver in the 1980's and a side trip to drive-by the home of Ann and Nancy Wilson of Heart in Tsawwassen, BC.
We talked about the venerable D500 and grounding issues, wire routing techniques, and general Phase Linear trivia.
What a great guy, and smart too!
Click to expand...


I enjoy his calls too. We try to yap about every week. Amazing man for sure.
 
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