HDMI cable length...how long is too long ?

I am planning a new HT/Audio installation . I want to know if there is any negatives to using long HDMI cables . I am planning to put about 24ft. of cable between 2 wall plates . Then short HDMI cables to connect the source to one wall plate location and the TV to the other wall plate location . In effect the TV is on one side of the room and the sources are on the other side .

Thank You
If you are going to use wall plates, I recommend using those which convert HDMI to Cat5/6E.

HDMI cables aren't the most robust for traversing distances and IMHO having more male/female adaptor connectors in between is likely to cause even more things to go wrong.

A friend of mine experimented by soldering HDMI cables directly to the AVR and projector (some old sets) and found that by removing the connectors and soldering directly, he was able to get a long HDMI cable run to work where using the connectors failed to establish a sync.

I have used Wireworld 5 series up to 12m and NuForce up to 15m and they work up for HDMI 1.4 1080p24FP video.
I attended a seminar on HDMI given my Jeff Boccaccio at RMAF and from what he told us that length of cable should not really exceed a 15 foot run. However he indicated that if you need to employ a longer run that the quality of cable to assure time delivery is a strong consideration. Take a look at:
www.hdmiuncensored.com he offers a book and I believe even free advice if you call or e-mail him.

Food for thought as I use two very long cable runs -- 25 feet for one and 98 feet for the other.

I use a BlueJeans Series 1 certified HDMI cable for the 25 foot run. It works great. It's HDMI 1.3 certified to 45 feet.

For my longer run, I use a powered HDMI balun that uses 2 Cat5 or 6 cables. It works great. So you can indeed do longer runs without too many major issues but here is what I recommend to you:

1) Run multiple cables and options. I suggest running the following: 2 HDMI cables and 4 Cat6 Cables if you can afford it. For the Cat6 cables, they MUST be the same length and not go through a patch panel or a wall plate and cannot be cut in any way. They won't work through a patch panel and you will have intermittent issues likely with a wall plate. They must be "home run" point to point. So your best bet is to get pre-terminated 25-foot cables. Get them in different colors to make pairing easy. For the HDMI cables, I suggest getting a Monoprice HDMI cable with Redmere. They are DIRECTIONAL, so be careful, but they are designed for longer runs and have a special amplifier built-in. The second HDMI cable I'd recommend is a BlueJeans Series 1. It's stiffer but it's a superb-build quality and certified.

2) I don't recommend going X feet with one cable then going to a plate and then plugging in a second HDMI cable that goes another Y feet. HDMI is truly a terrible connector. it's so fussy and it's a pain to work with; however, it is what it is. So save yourself potential headaches and do not, I repeat, do not try two different cables. Home run the connection point to point.

3) If you have no choice but to split the HDMI cables, then the BALUN may be your best bet. However, I'd also try the same configuration with quality HDMI cables.

So this is what I would do in my ideal world. I'd setup HDMI and BALUN redundant systems. The benefit of the BALUN is future-proofing. Change the hardware on either side of the Cat6 cabling and you can upgrade with the specs as they change.
Thank you for the info .

It appears that a good quality HDMI cable may suffice for the distance that I need .
Given the above info...I would like to know the opinion of using a 25' to 30' cable with wall plates . Will the wall plates and additional short HDMI cables on each end denegrate the signal . Will this set up suffice for 1080p
and 3D ?
Lastly , the Bluejean Series 1 cables have been recommended , these run in the low $100 range . Is there a better cable for less than $200 ?

Thank you
MonoPrice.com sells their Redmere HDMI cables that are specifically for longer runs, 25+ ft. I have heard nothing but good things about these cables and I recommend them for longer runs. A 50 ft. Redmere cable will cost you about $68 + shipping...


But even with those cables, I don't recommend using HDMI cable from AVR to wall panel -> HDMI to second wall panel -> HDMI cable to projector
Ok... would cat5 work better with the wall plates ?
How futureproof is the Cat5 set up ?
internetmin said it best.

Run MANY cables

Each HDMI cable should be one long cable not going through intermediate wall plates. Two or more.

Run 2 or more Cat6E with wall panels

Run run through wires that allow you to pull new wires through the walls should the need arise.
Anyone else have any experience with the Redmere cables ?

If you all don't use wall plates...how do you treat the hole in the wall where the cable enters and exits ? I don't want to just have a hole in the wall with a cable hanging out of it . The WAF thing ! Also not very energy efficient .

If I didn't already mention, I'm using Redmere cables. They work fine.

In terms of the "holes" you use special wall plates. I'll send you some links so that you can get a better idea.
Here you go. Special wall plates exist so that you can "home run" cables without needing to terminate at the plate and then add more cables again. This prevents signal loss with a home-run connection. For example, to run HDMI Baluns with Cat6 you cannot cut the connection with a wall plate. So installers use one of three options:

1) An open plate. You can chose different diameters depending on the number of cables. An example is here: http://www.monoprice.com/products/product.asp?c_id=105&cp_id=10425&cs_id=1042509&p_id=3997&seq=1&format=2

2) A plate with a bristle-style opening. See the second plate in this picture: http://www.lowes.com/pd_12862-60784-HT2001-WH-V1_0__?Ntt=legrand+hdmi&UserSearch=legrand+hdmi&productId=1214179&rpp=48

3) A plate with a rubber cover with slits in it. http://www.monoprice.com/products/product.asp?c_id=105&cp_id=10425&cs_id=1042505&p_id=4653&seq=1&format=2

So using this kind of solution is really ideal with HDMI installations. Additionally, it allows you to install a pull string and put a conduit behind it for future wire run pulls with ease. As you can see, there's a very easy and simple way to do this and also make it look aesthetically perfect.
I like those wall plates that were in the links , thank you .

I'm still undecided whether to use the suggested HDMI cables or to use cat 5/6 cables instead . Are there any futureproof advantages of one over the other ? That would probably be the deciding factor .

Thank you .
I strongly suggest running both. However, for your purposes, I'd simply use the HDMI cables for now and then if you run into problems look to use a BALUN on the Cat6 cabling. Rule of thumb: You always want a home run to eliminate points of failure. The Balun is great, but unless you need to use it, I'd stick with the HDMI runs with quality cables
Ok , thank you Internetmin . I appreciate the info and advice .