Which PS for Squeezebox Touch upgrade? Twisted Pear Placid, or AMB σ11? - diyAudio
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Old 11th May 2010, 11:35 PM   #1
orpheus is offline orpheus  United States
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Default Which PS for Squeezebox Touch upgrade? Twisted Pear Placid, or AMB σ11?

I have a Squeezebox Touch and would like to upgrade the power supply to linear.

I have an Avel-Lindberg 9 volt transformer with two secondaries, one of which is going into a Placid for my Buffalo II. All that I need to decide is whether or not it is better to use a Placid or an AMB σ11. The Squeezebox Touch specifies a 3 amp 5 volt supply. The Placid might not have enough current, and the AMB is only limited by the fuse (at least that is what they say). I suspect that a Placid would offer enough current, but I don't think that it can put out the 3amps that are specified.

Does anyone have an idea of which supply would be better for the Squeezebox?

The σ11 Regulated Power Supply

Placid


Thank you for reading my post.

Aaron.
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Old 12th May 2010, 08:58 AM   #2
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Definitely the Sigma. Just make sure you have proper heatsinks and transformer.
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Old 12th May 2010, 12:50 PM   #3
piero7 is offline piero7  Italy
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I'm quite happy with the Audio-GD one

Click the image to open in full size.

http://www.audio-gd.com/enweb/pro/diy/PSU09/PSU09.htm

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Old 18th May 2010, 03:54 PM   #4
orpheus is offline orpheus  United States
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Quote:
Originally Posted by TheShaman View Post
Definitely the Sigma. Just make sure you have proper heatsinks and transformer.

Thank you. I was leaning towards the Sigma, so I could try a different supply since I already built the Twisted Pear. I'll order the parts and give it a shot.

Aaron.
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Old 18th May 2010, 04:31 PM   #5
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Kurt von Kubik did a test and determined that the Touch did not consume more than 600mA.

New power supply for Logitech Duet

Excerpt from that post :
Quote:
Looking at the power consumption, it seems a bit strange, that the PSU supplied, is a 5V 3A type, because I cannot make it consume anymore than 600 mA. But headroom normally is good, but with SMPS it does not really make sense.
However the psu supplied with the SB Touch has to take into consideration a hard drive connected to the USB. Which means it would have to supply at least another 500mA.
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Old 18th May 2010, 06:21 PM   #6
glt is offline glt  United States
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All of them would be the same (if they can provide the current) for the application since they are cleaner than the regulators inside the squeezebox. Those regulators will determine the quality of the power fed to the chips.
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Old 25th May 2010, 08:03 AM   #7
orpheus is offline orpheus  United States
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I think I'm going to build the AMB, so that way I have a different supply since I already have a TP Placid for my Buffalo.

Maybe one day I'll crack open the Squeezebox and look at replacing regulators inside, but I'm not ready to pry it open yet.

Thanks for all of your suggestions!
Aaron.
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Old 30th May 2010, 03:26 PM   #8
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I recommend a SuperTeddyReg on a 12V SLA.

Even though the powerconsumption of the Touch
will be lower, you can get a 1A or 2A supply.

Cheers
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Old 4th June 2010, 10:52 AM   #9
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Hi there
The Touch itself will not consume anymore than 600 mA, at least I cannot make it consume anymore.
Attached devices might increase this somewhat, but I suggest that you do not attach anything power consuming besides USB sticks to it, because it makes it sound worse.
Also the memory stick makes it degrade sound substantially.
So if you want to use a hub a disc or like, use ones with own PSU
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