15m HDMI solution required

tweedbean · 5 Jul 2016 at 11:34

I am currently in the process of building a home cinema, see build here:

https://forums.overclockers.co.uk/showthread.php?t=18738137

With that in mind I am having a projector one end of the room and screen/AV receiver etc the other. I need to get the feed from the receiver to the projector which will run in the walls and this would mean I would require roughly a 15m long HDMI cable to allow for running up and down the walls.

I have heard a 1080p image will not transmit clearly over this distance on a HDMI cable so what are my options?

Jamesyboyjim · 5 Jul 2016 at 11:44

tweedbean said:
I have heard a 1080p image will not transmit clearly over this distance on a HDMI cable so what are my options?

Where did you hear that?

Perhaps the limit is just less than 15m but I had a cheapo 10m hdmi cable from the bay which worked perfectly at 1080p from my pc to the TV.

FurryLemon · 5 Jul 2016 at 11:56

HDMI.org recommend keeping cable runs below 15m. Cat6 is recommended for longer runs.

MatsyLR · 5 Jul 2016 at 12:00

What you have been told is hogwash after a certain lengh you need some repeaters in the cable so the signal gets through.

here is one from ocuk that you can buy that would work just fine
https://www.overclockers.co.uk/ocuk-value-15mtr-hdmi-male-male-cable-cdlhd-315-cb-057-ok.html

I have one of these coming from the downstairs TV to the upstairs TV and it tranmits the signal just fine and there is no loss in it. Its cheap aswe-ll + free delivery

tweedbean · 5 Jul 2016 at 13:49

Thats great news if it will work especially at that price.

Also with speaker cable, I need to buy all new, is there a particular brand, type I need? I need about 50m to be safe.

FurryLemon · 5 Jul 2016 at 14:16

Speaker cable is a can of worms. As long as it's 99.999% oxygen free cooper of reasonable thickness (2.5mm is recommended) then it doesn't really matter what you use brand wise.

I use Van Damme Blue 2.5mm. Can be had for 2 quid a meter. Others will think 2 quid/meter is outrageous (Sonny), and some will think that it's too cheap.

picnic · 5 Jul 2016 at 14:27

I bought a sub £20 15m hdmi cable (1.4a with ARC) from the forest a couple of years back, seems to be fine.

tom_nieto · 5 Jul 2016 at 15:23

If you're purpose building, I would run cat6 anyway even if you don't terminate it and leave it behind blanking plates. That way you've got a fall back if you find your HDMI doesn't do the job.

d_brennen · 5 Jul 2016 at 15:35

tom_nieto said:
If you're purpose building, I would run cat6 anyway even if you don't terminate it and leave it behind blanking plates. That way you've got a fall back if you find your HDMI doesn't do the job.

This

Did this with a couple of projector installs and was really handy that I did. One of the projectors bit the dust and was replaced with a QHD NEC jobbie, running lovely over HDBaseT

tweedbean · 6 Jul 2016 at 12:36

FurryLemon said:
Speaker cable is a can of worms. As long as it's 99.999% oxygen free cooper of reasonable thickness (2.5mm is recommended) then it doesn't really matter what you use brand wise.

I use Van Damme Blue 2.5mm. Can be had for 2 quid a meter. Others will think 2 quid/meter is outrageous (Sonny), and some will think that it's too cheap.

Where have you seen it for £2 a metre? I can find 25m for £62.50 on ebay

FurryLemon · 6 Jul 2016 at 13:37

You have to buy more for 2 quid/meter. 2.50/meter is still a good price.

jpaul · 6 Jul 2016 at 18:02

earlier thread recommended this speaker cable 33p/m I guess you need a heavier duty soldering iron to put the banana plugs on
[ I naively bought AMP manufacturers recommended years ago ].