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screamerUSA  
#1 Posted : Wednesday, September 23, 2009 1:11:01 PM(UTC)
screamerUSA

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Before I plug anything in, I just wanna make sure that all's well.

LCBPS 9V: Blk, Rd, Orn, Yel
LCDPS 15v: Blk, Rd, Orn, Yel. jumped to second board

Here's a pic: http://www.box.net/shared/89po1oooup

...screamer
NicMac  
#2 Posted : Wednesday, September 23, 2009 1:22:33 PM(UTC)
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I guess you are referring to the transformer connections to the power supplies ?
Looks ok but you are actually only using one rail of the LCDPS so there is not much reason to power the second rail.
Nic

Edited by user Wednesday, September 23, 2009 1:31:25 PM(UTC)  | Reason: Not specified

needsp  
#3 Posted : Wednesday, September 23, 2009 2:09:03 PM(UTC)
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Thanks: 2 times
Hi Screamer

You've not wired the negative rails of the two LCBPS to the board! (in the photo at least)

Paul

screamerUSA  
#4 Posted : Wednesday, September 23, 2009 2:54:16 PM(UTC)
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needsp wrote:
Hi Screamer

You've not wired the negative rails of the two LCBPS to the board! (in the photo at least)

Paul



Hey Paul, thanks. I'm not sure what you mean? Could you explain differently. I'm kinda fried.d'oh!

...screamer
Brian Donegan  
#5 Posted : Wednesday, September 23, 2009 3:16:12 PM(UTC)
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The LCBPS supplies have three outputs: +, GND, -. All three of these need to be supplied to the Buffalo analog stages. In the pictures you only have - and GND connected. This will result in bad things.
screamerUSA  
#6 Posted : Wednesday, September 23, 2009 3:26:36 PM(UTC)
screamerUSA

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hmm, I thought I had + & gnd. Where do I get the other wire? I must really be fried. Sorry for my ignorance.

...screamer

Edit: Oh jeez, I must be loosin' it. I'll take care of that right now.

Thanks again.

Edited by user Wednesday, September 23, 2009 3:29:26 PM(UTC)  | Reason: Not specified

Brian Donegan  
#7 Posted : Wednesday, September 23, 2009 3:33:28 PM(UTC)
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The third terminal of each supply to the third terminal of the analog power on the DAC.
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Brian Donegan  
#8 Posted : Wednesday, September 23, 2009 3:37:11 PM(UTC)
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While you are at it, you might want to double-check that you have + and GND in the correct spots just to be sure.

You also want to set the output voltages from the supplies BEFORE connecting them to the DAC.
screamerUSA  
#9 Posted : Wednesday, September 23, 2009 5:34:51 PM(UTC)
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Done, Done and Done.

Thanks allot guys, it's very much appreciated.

I'd like to congratulate the Twisted Pair guys for an outstanding job. It sounds terrific. And thats after running for like 45min's.

Now I'd like to see how things sound if I connect a 6SN7 to the output.

Anyone ever try redundant output stage?

...screamer <--- hasn't slept in 2.5days, time for some sleep.
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