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Old 17th March 2013, 09:39 PM   #1
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Default Simple SE - Edcor XPWR059 240v wiring

Hi everyone,

I've been connecting up my amp on a board to do a practice run before the final chassis build and I'd like to check I've wired up my power supply transformer correctly.

Its an Edcor XPWR059 which I need to run at 240v.
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Now, I've connected the two red 375v wires to T1-RED (terminals 01 & 03)

I've connected the two 2.5v brown wires to T1-YEL.

I've also connected the high voltage CT blackwith red trace to T1-RED/YEL (terminal 02)

Lastly, the 3.15v yellow wires have gone to the T1-GRN terminals.

Is that correct?

One other question. I have an Edcor choke which has a black and yellow wire but I can't see anything anywhere to differentiate the two wires asides from colour. Should I connect them a specific way round on L1 or not?

Thanks guys.

Gavin
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Old 18th March 2013, 06:18 AM   #2
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Hi.
Was in the same situation as you . there is a post on it : Basic questions on configuring Tube AMP

Edcor's Red goes to T1 RED
Edcor's Brown goes to T1 Yellow
Edcor's Yellow goes to T1 GRN
There is no difference in the choke wires, just connect it to the relevant terminals as in the wiring diagram.

PAY ATTENTION : When you connect the black/white to green to have 240V in series, you might blow fuses! If so, the wiring colors of the scheme is not the same as in real. (If it doesnt happen, you are good)
Let me know your results.
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Old 18th March 2013, 10:35 AM   #3
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Excellent, thank you for clarifying that for me. I'll keep an eye out for that wiring issue too and report back.
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Old 18th March 2013, 03:34 PM   #4
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Mudchute: As Sagi mentioned, his XPWR059 transformer was incorrectly wired from the factory. See posts 54-63 in his thread linked above.

Before powering up, I would check the resistance of both of your transformer primary windings.

If it's wired correctly from the factory, you should see around 3.6 ohms between the black and black/white and around 3.6 ohms between the green and green/white wires.
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Old 19th March 2013, 09:23 AM   #5
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Report: Mine was wired correctly and I fired it up first time last night, passed the smoke test and sounded great despite its test ply board set up.

Another Question: I'm now looking to getting the last few littel bits to make a chassis and final build. Is it worth using any boutique wires or cables anywhere inside the amp? Like to and from the RCA/speaker terminals/volume pot etc?
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Old 19th March 2013, 09:32 AM   #6
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As suggested to me , any 18AWG twisted wires and 16AWG for grounding are OK .
Probably others will tell you there is a difference but I don't know if it is cost effective
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Old 19th March 2013, 02:02 PM   #7
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The input level wiring will benefit from twisted pair or shielded cable, especially if the runs are more than a few inches. You can twist them yourself as sagi suggested or you can use pairs from ethernet cable as I and many others have done. It works well.
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Old 19th March 2013, 02:38 PM   #8
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Shielded input cable from RCA's to the board.

I use small RG-174 coax or leftover wireless antenna leads but there are plenty of choices.
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Old 19th March 2013, 04:15 PM   #9
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Quote:
Originally Posted by sagi4422 View Post
As suggested to me , any 18AWG twisted wires and 16AWG for grounding are OK .
Probably others will tell you there is a difference but I don't know if it is cost effective

I have 20 awg wire for grounding, is this too thin ?
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Old 19th March 2013, 07:33 PM   #10
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Thats great guys, I've got some ethernet cable at home thats suitable so I'll use that.

What about from the board to the speaker terminals?
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