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Michael Amster
2004-12-02, 11:59
Hi:

I have been reading the logs and following the form factor discussion
keenly. I will be reboxing my Squeezebox into a 1U form factor (19"
wide, 1.75" high and 14" deep) to fit in my racked stereo cabinet better.

While I do this, I was interested in upgrading the power supply. I know
that the delivered PS is a switched design - rated for 1000ma. Being
kind of an audiophile type, I was interested in separating the PS for
the Digital Music circuit from that used for the display and other
stuff. I was thinking of building the Welborne Labs PS-1.

Has anyone looked into changing the hardware this way?

I also have an MXF file for the Squeezebox remote for people who have
Theater Master MX-700 remotes. I will be adding some macros for
Internet Radio too I guess.

-MA

seanadams
2004-12-02, 12:50
I posted some comments on this about a week ago in the dev forum. It is
not a small undertaking to swap out the internal supplies.


On Dec 2, 2004, at 10:59 AM, Michael Amster wrote:

> Hi:
>
> I have been reading the logs and following the form factor discussion
> keenly. I will be reboxing my Squeezebox into a 1U form factor (19"
> wide, 1.75" high and 14" deep) to fit in my racked stereo cabinet
> better.
>
> While I do this, I was interested in upgrading the power supply. I
> know
> that the delivered PS is a switched design - rated for 1000ma. Being
> kind of an audiophile type, I was interested in separating the PS for
> the Digital Music circuit from that used for the display and other
> stuff. I was thinking of building the Welborne Labs PS-1.
>
> Has anyone looked into changing the hardware this way?
>
> I also have an MXF file for the Squeezebox remote for people who have
> Theater Master MX-700 remotes. I will be adding some macros for
> Internet Radio too I guess.
>
> -MA
>
>

Michael Amster
2004-12-02, 14:46
Sean Adams wrote:

>
> I posted some comments on this about a week ago in the dev forum. It
> is not a small undertaking to swap out the internal supplies.
>
Thanks for the pointer. I guess the audio nut in me would eventually
look to isolate power supplies for the different pieces that create
"hash" - that said it would be the wifi PS, the display PS, etc. To
some degree, it appears that separate regulators for different parts of
the circuit would handle some of that - getting off a switching PS may
eliminate some of the switching noise - using some nice linear PS rated
at 1amp or more and given enough cooling room would be a start. When I
crack the case, I will take a look at how things are laid out. If I had
enough bucks for a donor, I could always play at remounting the PCM
circuit physically away from the "noisy" stuff.

Like Robin, I too have an Art DI/O that I am reboxing as my external
DAC. I probably won't rebuild those PS for a bit since there are 3 of
them. I will probably start with a good isolation transformer and may
do so for the Squeezebox as well...

-MA