ebay DAC

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david C
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#1 ebay DAC

Post by david C »

don't know why but for some reason I've just bought one of these,

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWNX:IT

has anyone got one of them what did you use for a PS?
David

Wasps are the Katie Price of the Animal Kingdom - utterly pointless and bloody irritating!
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al newall
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#2

Post by al newall »

That's the one we've been discussing in the Beginners section.
Three of us have them i think.

The power supply is onboard, so you just need to connect one or two 12-15v
transformers to the board.
I use a 12-0-12v 30Va, and a 12v with twin secondaries.

There's at least a couple of threads over on DIYaudio, which deal with modding them.
I've just started changing things on mine.
Much to learn there is.
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pre65
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#3

Post by pre65 »

Hi David.

I use an 15-0-15 and a 0-12v (0-6 + 0-6 in series) on mine.

The 15-0-15 was more like 17-0-17 so I had to resistor it down to 15-0-15 as the regulator chips were getting a bit hot.

Not sure what the VA ratings are as they were unmarked, but they get a bit warm.
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david C
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#4

Post by david C »

thanks Al and Philip

where did you get your tx from, my brain hurts trying to find one :?

they suggest this one from them

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWAX:IT

I can't believe how much I've forgotten
David

Wasps are the Katie Price of the Animal Kingdom - utterly pointless and bloody irritating!
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pre65
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#5

Post by pre65 »

Both mine were in my spares box. :wink:

If I were starting from scratch I'd probably go with the one you linked to.

Two toroids from RS / Rapid / Farnell etc would be an alternative but take up more space.
The only thing necessary for the triumph of evil is for good men to do nothing.

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david C
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#6

Post by david C »

thanks Philip

I think I might do that,

funny the listing says 220v but the tx in the picture says 230v :?
David

Wasps are the Katie Price of the Animal Kingdom - utterly pointless and bloody irritating!
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pre65
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#7

Post by pre65 »

david C wrote:
funny the listing says 220v but the tx in the picture says 230v :?
I have a similar transformer (looks the same but different voltages) for my TDA1541 DAC valve output stage and that has two 115v primaries.
The only thing necessary for the triumph of evil is for good men to do nothing.

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JackOfAll
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#8

Post by JackOfAll »

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Last edited by JackOfAll on Mon Sep 19, 2011 3:43 pm, edited 1 time in total.
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david C
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#9

Post by david C »

thanks,
I bid the original one $20.00 so got it for £12
David

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david C
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#10

Post by david C »

just got the board, am I right in saying that the power terminals are 15-0-15

from the left?
David

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pre65
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#11

Post by pre65 »

The 3 way connector (in front of the middle large capacitor) is 15 - 0 - 15.

The 2 way next to it is 0 - 9 or 0 - 12
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david C
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#12

Post by david C »

thanks Philip,

that's what I thought but wasn't quite sure
David

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#13

Post by Puffin »

What do these sound like?
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Nick
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#14

Post by Nick »

Standard, Good. With better op amps, very good. With valve output stage good as I have heard.
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#15

Post by Puffin »

Nick wrote:Standard, Good. With better op amps, very good. With valve output stage good as I have heard.
Did any of you get involved with the "Cheapo Chinese Dac" malarkey a few years ago? Just wondered if these were any better.

Not allowed to post the link yet.
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