Mains cables & PSUs

[Reid Malenfant]

The Belkins are filters agreed, but it doesn't mean that they have infinite rejection of crap on the mains & switching spikes from inductive loads are the worst

Static build up you say, or something similar? I'll think on it Ali, if i come up with possibilities i'll let you know

[Ali Tait]

Ok cheers.I'm pretty certain it's not any appliance in the house, so it's got to be the system.

[HighFidelityGuy]

Hmmm, you just made me wonder about something I'm wondering if the voltage level affects what we see on the screen, after all my wall wart was outputting 5.3V & not 5V..

Looks like a little experiment is in order

On the subject of experimenting with voltages around 5V for the HDMI switch box; I've just remembered that I have a big bench top supply that can do 4-6V up to 4A. I might try running the HDMI box off this while tweaking the voltage around the 5-5.5V region. It's going to be a pain the hook it up though as the HDMI box is buried at the back of my rack. I'll give it a go though.

[Mark Grant]

I'm not exactly sure how this is occuring, it could be due to the greater cross sectional area of the cable or the screening or both, whatever it was a surprise

Same film as last time just so nothing changes. The same effect as per the linear wall wart - increased contrast, improved colour saturation, improved edges, detail & less motion blur Detail in shadows is also enhanced & an even more pronounced effect of depth to the picture..

Recommended

Pleased you like the cables

It is the core construction and the type and design of screening that makes the difference. Really does work for lots of people.

Many people report differences with devices such as sky boxes etc, always worth a try.
The Sound quality is often commented on.

The figure 8 power cable is here for anyone interested:
http://markgrantcables.co.uk/shop/in...products_id=47

reviews on my site: ( not many as people have to use real names which puts people off, they are real customer comments though)
http://markgrantcables.co.uk/shop/in...r_of_uploads=0

another one:
http://www.adventuresinhifiaudio.com...-0-mains-lead/

Anything can be returned for refund, so no risk.


Mark

[Reid Malenfant]

On the subject of experimenting with voltages around 5V for the HDMI switch box; I've just remembered that I have a big bench top supply that can do 4-6V up to 4A. I might try running the HDMI box off this while tweaking the voltage around the 5-5.5V region. It's going to be a pain the hook it up though as the HDMI box is buried at the back of my rack. I'll give it a go though.

Let me know how you get on Dave, i'm just waiting on this CB power supply now, when it gets here i have shed loads of work to do

Pleased you like the cables

It is the core construction and the type and design of screening that makes the difference. Really does work for lots of people.

Many people report differences with devices such as sky boxes etc, always worth a try.
The Sound quality is often commented on.

Anything can be returned for refund, so no risk.


Mark

Ah yes, the twisted cores, i forgot about that

As for returning them you'd have to prize them out of my cold dead hands

[Reid Malenfant]

<snip> i'm just waiting on this CB power supply now, when it gets here i have shed loads of work to do

Well that CB PSU arrived today & what a piece of crap it is

I have never seen such a shoddy excuse for a regulated supply I expected to see something like 18V on the PSU capacitor which is plenty of headroom for regulation, what i found was 25V It was all explained though when i looked at the capacitor & found it was only 3,300uf. With a 3Amp draw that works out at a hell of a lot of ripple voltage on the cap

I have modified it already but in all honesty i'm not sure the heatsinking is going to be up to the job, i might try it later on...

Meanwhile Paul Hynes has just received an order for one of his super regulators When that gets here in a month or so i'll see what that does to the picture

[Reid Malenfant]

Well as i'm very gradually re-populating my equipment rack i have decided there is no way i'm going to trust that piece of junk PSU to power the switcher. I'll use the regulated linear wall wart until i receive the Paul Hynes PR3i regulator

Of course the problem is i won't be able to get to the back of the switcher or the Belkin PF40 unless i strip the whole of one side of the rack out. However i have a cunning plan that doesn't involve turnips

What i have done is make a new DC lead for the wall wart that is attached to the output of the wall wart with a terminal block, when the PR3i arrives it'll be fed into a screened chassis enclosing the regulator & transformer etc. What i'm using for a DC lead is some rather nice & very handy cable i bought from Chris (The Grand Wazoo - cheers once again chap ) which you can see here. I'm using the 14 guage stuff which is nice & thick so no real voltage drop, the cores are twisted & screened - perfect!

The cable is long enough to connect to the HDMI distribution amp & feed to the very bottom of the rack & out of the front, so when the time comes i can transfer it to the new power supply. I'm doing the same with some Mark Grant DSP 2.5 mains cable but fed from one of the Belkin PF40s & to a mains socket. When the time comes the socket will be replaced with an IEC plug which will plug into the new PSU..

I hate having to think every little thing through so damn thoroughly but i guess i'd be cursing a lot more if i didn't

[colinB]

Sounds like youre getting there

Im doing mine at the weekend. Not looking to the work but definitely to the reslults.
Got 20m of Van Damm blue series of Mark Grant and i have low mass WTB speaker bananas form some previous mad project, and i bought my PS3 tonight
Using a ikea lack table as tv/TT support, and selling my racks.

[Alex_UK]

...and i bought my PS3 tonight

Good lad! Just don't go setting up the PS3 before you do the move around or else it won't happen!

[colinB]

Yeah your right.
Ill just open the box then.