New TK2050 board

[SoldierAnt76]

Originally Posted by Havoc08

You seem to be kind of missing the point. This is not battle of the PSUs to be right or wrong. You use what ever PSU fits your wallet, your ears and whatever else criteria you have set up. I am merely tossing out ideas for others to comment on.

I assume that the power rating for the TP2050 chip - e.g., 2x50w or 1x100w - represents a theoretical maximum rather than a fixed constant. Has anyone tried pushing one of these amps to the limit - that is, low impedance speakers, high volume, and demanding music - and measuring the power output?

It would be nice to have some quantitative data to support qualitative claims of sound quality using different power sources.

[ptiJean]

Originally Posted by sendler

I though this might be amusing at this point in the discussion of power supply overkill. Here is a photo of my new Big Dac Board running the dac section on a 100 Amp/Hour battery.
Experience with this DIY DAC ?

Cardboard power

[hifimediy]

Hi, here it is.

[udailey]

Nice connectors. Just a suggestion but from MyREFC group buy experience I found people really like it if they can replace the GBJ rectifier with TO-220 diodes. What is the 8 pin SIP on the power supply?

[sendler]

That is the speaker protection IC to control the relay for turn on delay to eliminate the pop. The DC protection is not utilized as it is a bit trickier to implement with the bridged output but it could be modded to do so.
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Originally Posted by udailey

Nice connectors. Just a suggestion but from MyREFC group buy experience I found people really like it if they can replace the GBJ rectifier with TO-220 diodes. What is the 8 pin SIP on the power supply?

[hifimediy]

Originally Posted by sendler

That is the speaker protection IC to control the relay for turn on delay to eliminate the pop. The DC protection is not utilized as it is a bit trickier to implement with the bridged output but it could be modded to do so.
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A small relay plus photocoupler circuit is used for DC protection now. Or any one have better idea?

[TheDealer]

Hi Tripath Master Hifimediy,

I see that the T3 is meanwhile at ebay listed.

Regarding Powersupply I am a bit confused which one is best to use. Reading item description one smps alone makes a bit noise. Taking 2 pieces should be the solution.

I never tried a tripath with a torroidal transformer. Is this board recommended to supply it with a torroidal transformer ? On the other hand a smps is mostly recommended here to supply your other boards like tk2050 V2.

[Nick122147]

Originally Posted by TheDealer

Hi Tripath Master Hifimediy,

I see that the T3 is meanwhile at ebay listed.

Regarding Powersupply I am a bit confused which one is best to use. Reading item description one smps alone makes a bit noise. Taking 2 pieces should be the solution.

I never tried a tripath with a torroidal transformer. Is this board recommended to supply it with a torroidal transformer ? On the other hand a smps is mostly recommended here to supply your other boards like tk2050 V2.

The torroidal vs smps discussions should be the same for the T3 vs the other tk2050 boards. I haven't tried torroidal myself with any of the tk2050 boards.
The two channel power supply board should be good suited with a torroid, while for smps it would be better to use the new mono psu board to avoid any potentional noise.

[Nick122147]

Originally Posted by sendler

I though this might be amusing at this point in the discussion of power supply overkill. Here is a photo of my new Big Dac Board running the dac section on a 100 Amp/Hour battery.
Experience with this DIY DAC ?

Hi Scott, are you running direct out of DAC chip mod on this? which dac chip is it? I have a very similar red DAC board , and mine makes some strange noise when I haven't connected any digital input.
Is one DC supply enought when only running the DAC part of this board? What voltage?

[alkasar]

Does anyone have THD data/measures for sta505 and sta517B ? particularly thd vs output power at various frequencies. The datasheets are not very informative. Thanks.