[Oregonian Haruspex]

On 2014-04-23 23:17:35 +0000, ~misfit~ said:

Somewhere on teh intarwebs Oregonian Haruspex wrote:
On 2014-04-22 21:51:43 +0000, news said:

"Greg" wrote in message
b.com...

On 2014-04-21 10:29:27 +0000, news said:

Hello Group,

I have a Cambridge Audio DacMagic Plus and it comes with a wall
wart AC to DC power supply, it contains a switching power supply
for 12 Volts DC. It really bugs me that they would use a wall
wart for a fairly good quality product. This DAC makes my CD
players sound very nice. Are others familiar
with this product, is it worth replacing the wall wart with a
proper linear
DC power supply?

Thanks,

Shaun

I don't know, but I'd be trying it with a battery and listening.
I know a battery pack made a positive difference with my
Audiophilleo.

Greg


Thanks...

I don't know why I haven't tried that yet? I have several good 12
Volt SLA batteries. Before I was looking into it, I thought the DC
voltage was 5 instead of 12 volts.
I'll give it a try.

Shaun

Another relatively inexpensive option would be a 12v power supply such
as we ham radio nerds use. They are heavily filtered and designed not
to give spurious emissions. Obviously a battery is the best option
for noise, but you should be careful lest you wear the battery out
over time.

Making up a Li-Ion pack would solve the wearing out problem. However three
cells is 10.8v and four is 14.4v. :-/

Li-Ion is such a great technology and is getting quite affordable - not just
the cells but small charge / discharge controller PCBs. It's just a shame
that the cell voltage (and multiples thereof) don't fit easilly with
commonly used voltages.

An option is to use a DC to DC converter to boost the voltage.