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madisonroberts 9th February 2013 10:29 AM

First Pass Build. F5. General Help Needed.
3 Attachment(s)
I have been collecting parts for this build for 6 months or so and finally started to put it all together. I am using a 400V, dual 18V Antek AS-4218. I had been planning on going full dual mono but i cannot seem to get my hands on another Antek transformer because their factory burned down or something. There are 4 68A 600V IXYS rectifier bridges. I know these are overkill, but it is all they had in stock when i ordered them. I have two power supply boards with 88,000 in capacitance on each side (total of 176,000).

I am having trouble figuring out how to go about wiring for this configuration... I attached a drawing of how i believe it can be done below. This is my first solid state build and i am just a little bit confused. Any help with wiring this pseudo dual-mono F5 would be much appreciated. I only need help with wiring from transformer secondary and forward.

This has been an extremely fun project and i have learned A TON! I can't wait to get this thing fired up.

Thanks in advance,

Zen Mod 9th February 2013 11:10 AM

give us little bigger sketch

this one is thumbnailish in size

madisonroberts 9th February 2013 11:20 AM

1 Attachment(s)
Oops. hopefully this works. I think you can enlarge it a little bit now.

Zen Mod 9th February 2013 11:43 AM

it will work - just go for it

don't forget to enjoy ........ ;)

madisonroberts 9th February 2013 11:48 AM

Ok great. I will complete all the wiring when i get off work. Hope to hear some music tonight. Thanks

AudioSan 9th February 2013 12:33 PM

just take your time with adjusting, warm up and final(ish) adjustment:)

madisonroberts 11th February 2013 10:16 AM

When grounding the power supply boards, do i need to use two thermistors at separate grounding points? Or two thermistors on (one on each side) that meet at Earth ground? I believe this is my last dilemma.. Any help would be great. Thanks

Zen Mod 11th February 2013 10:21 AM

one ground - one ntc to chassis

you have two grounds , for my understanding

madisonroberts 11th February 2013 10:35 AM

Ok, so just to be clear. Both power supply boards ground to meet on one end of a thermistor? Also, should I leave the power transformer shield floating, or connect to it ground? I have seen both been done..

Zen Mod 11th February 2013 10:40 AM

connect both shields directly to chassis in one point

connects both main audio grounds , each through own separate NTC , to one (common) point on chassis

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