I have recently wall mounted a new flat screen tv on the wall with all the cables routed in ducting behind the plasterboard for a clean install. We got a 46" sound bar (HW-F751) as part of the package and I would like to mount this under the tv and run the power lead via the same ducting behind the wall. The problem I have is that the power lead has a bulky ac/dc adapter right in the middle. Now I know that I can easily extend the wall plug/adaptor side as this is just a standard power cable that pulls out of the adapter (like first half of a laptop cable and old stereo cables). This will not work as I will still be left with the ac/dc adapter stuck on the wrong side of the duct. How do I go about splicing the dc side of the lead, will there be issues of electro magnetic interference (sorted by ferrite ring?) but what about loss of voltage due to an increase in length to the speaker? Current dc length of just over 1m will need to be extended to 2.5m.
Sound Bar power extension
- Thread starter Sharpedge
- Start date
Associate
- Joined
- 19 Mar 2009
- Posts
- 1,628
- Location
- Leicester
TBH unless you can find some sort of extension I personally wouldn't be touching it, splicing the wires isn't the sort of thing id undertake, find another solution, risking doing something wrong and burning down the house - not worth it.
It's possible to work out/estimate power loss over distance but you'll need to know the voltage and the current and also the thickness (gauge) of the cable being used before any calculations can be made. Output voltage and current will be given on the adapter.
The other thing to be aware of is the product warranty. If you chop off the adapter cable's DC plug then you'll most likely invalidate the product warranty in the process.
If you can measure the internal and external diameters of the barrel of the DC jack plug then it might be possible to find equivalents in jack and sockets to make up an extension lead. They'll have to be rated the same current and voltage capacity as the originals though. Try spares and accessories suppliers: CPC and RS Components.
The other thing to be aware of is the product warranty. If you chop off the adapter cable's DC plug then you'll most likely invalidate the product warranty in the process.
If you can measure the internal and external diameters of the barrel of the DC jack plug then it might be possible to find equivalents in jack and sockets to make up an extension lead. They'll have to be rated the same current and voltage capacity as the originals though. Try spares and accessories suppliers: CPC and RS Components.