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Display Power & Amplifier questions

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vast:

Hey fellas, got a couple of questions now I'm nearing the put together stage of my build.

I'm still a little unsure as to how to power my display  My design is based on Weecade and have the PSU for the PC at the back panel as per the original design.  Is it possible to tap some power from inside of the PSU?  By converting some molex adaptors maybe?  :dunno

My other question is around getting an amp sorted for the speakers.  I've heard conflicting reports about using a mini amp from eBay powered from the PSU with people saying that the HD can be heard during use.  I got a cheap set of USB speakers instead to cannibalize for the amp. 

I tried that tonight and I was very disappointed with the sound quality.  Obviously I'm not expecting audiophile sound from a tiny amp and some car speakers but it was really dirty sound and very quiet.

Any suggestions on either of my problems?  Is it worth trying a different set of USB speakers?  Or is there a mini amp that is going to give a clean hum free sound?  :dunno


BobA:

You can connect the monitor to a 12V connector if that is what it runs on.  The mini amps work well on 12V but you have to make sure you have a common ground so no noise will be heard.



vast:

I think I'm going to mount one of these in the back, with a connection from that to the monitor;



and get one of these for both the psu and monitor;



I was really hoping to get away with just the one connector on the rear.  unless i crack the psu and solder in a tap from the main inlet i don't think that will happen...

How do I go about getting a common ground for the mini amp?


RandyT:


--- Quote from: vast on April 29, 2011, 01:01:35 pm ---I think I'm going to mount one of these in the back, with a connection from that to the monitor;



...<snip>

I was really hoping to get away with just the one connector on the rear.  unless i crack the psu and solder in a tap from the main inlet i don't think that will happen...


--- End quote ---

Color me confused.  If you get one of those parts you showed, you can split the output to whatever you want to connect to your mains.  If it were me, I would strip the plug off of a power strip, and wire it to the connector you show here.  It has a fuse, so you just need to make sure that the part and fuse are rated for the total amount of current you plan to pull through it.

RandyT

vast:

Well I have the cut out in the rear for the PSU as Lokesen's original plans.  I now need to power the display - to make it neater I was going to add the switched plug and wire in a power cable from the rear of it directly into the monitor.

Does this help;



This way I have 1 plug from the wall split into the 2 inputs on the rear.


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