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Moonlight

Best cables/setup for new HT

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Posted (edited)

Howdy ... new member here and after some info regarding cabling.

I'm a noob trying to figure out the basics ... so please bear with me

 

Not getting a new HT until hopefully around Xmas but researching prior so that I can make informed decisions to a) get best bang for buck b) hopefully some future proofing

 

The aim is for an LG CX 4K HDMI 2.1 OLED with a Denon AVR.  I'm considering the new X3700 with the HDMI 2.1 input ... only just checking the options at this early stage.

 

My setup is that the nbn box (FTTH) and computer with modem/router is over one side of the house with the TV going up on the other side ... roughly a cable length of 15m with the AVR located roughly in the middle - approx 7.5m cable length from both.

 

OPTION 1 - From nbn box direct to TV

 

Q 1 

I've read that the best PQ is to connect from the nbn box directly to the TV as the nbn box has an inbuilt modem so you don't have to go through your modem/router that is connected to your computer unless you need the router for Wifi for your TV.  The HDMI 2.1 40Gbps cable from the TV to AVR needs only to be unidirectional and does not need to go through eARC inputs on TV or AVR?

 

 Is this correct?

 

Q1a By bypassing the existing modem ... does the ISP know what is going on ... or does my info need to be re-entered into the TV setup menu?

 

Q2

Due to cable length being 15m ... it is a long run and will require fibre optic cables at that length? 

 

Q3

The nbn box only has RJ45 connectors which suits copper patch cables, but fibre optic cables use HDMI connectors. How is this problem best solved.

Are electricians allowed to alter cabling/connections like RJ45 in nbn boxes to accommodate HDMI connectors as they only come with these.

 

 

OPTION 2 - From nbn box to modem/router ... then to TV

 

Connect the nbn box to the modem/router with a copper patch cable ... and then from the Modem/R to the AVR with another copper patch cable ... then from the AVR to the TV with an HDMI 2.1 cable with Ethernet that does up to 40Gbps via eARC inputs.

 

Q4 

Is the use of copper patch cables limiting the ability of 40Gbps data and bringing it back to 18Gbps?

Cat5e,6,7 patch cables are all limited to 18Gbps .... but Cat8 patch cables are available that apparently do 48Gbps ... Is using these the best solution for optimising the system and future proofing?

 

Any assistance will be much appreciated   :thumb:

 

 

 

Edited by Moonlight

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I think you are a bit confused, HDMI connections and data networking are two different things.

 

HDMI is a point to point connection type for sending video/audio between two devices.

 

Data networking (Ethernet, Wifi etc) is for sending information around "the network".

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:welcome:to the forum.

 

Have you auditioned any HT packages from a specialist retailer like Selby, Klapp AV (not Harvey Norman, JB Hi-fi)?  You probably can get a good deal which includes installation. You can then use SNA to verify package details, improve things...

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35 minutes ago, Snoopy8 said:

:welcome:to the forum.

 

Have you auditioned any HT packages from a specialist retailer like Selby, Klapp AV (not Harvey Norman, JB Hi-fi)?  You probably can get a good deal which includes installation. You can then use SNA to verify package details, improve things...

I only scanned through his post, but he's not wrong, look up HDMI eArc

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On 10/06/2020 at 12:12 PM, Moonlight said:

. then from the AVR to the TV with an HDMI 2.1 cable with Ethernet that does up to 40Gbps via eARC inputs.

 

 

 

Just make sure that both devices are compatible, most aren't.

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If you look at Denon X3700H manual (available on USA Denon website) it does not talk about LAN connectivity over eARC.

 

Are your concerns surrounding picture quality related to over the air TV broadcasts or internet video streaming? 
 

If you have the money then by all means wire up your house with optic fibre for LAN. Just know that buying further networking equipment with optical fibre support is going to be expensive, and your choices will be more limited from the general computer suppliers. You will also need a lot of fibre to Ethernet converters as home devices' network interfaces are not optic fibre connection (there may be an exception that I am not aware of).

 

I would say focus on getting the best cable for your receiver to TV connection. If you are going to spend a lot of money then consider active optic fibre HDMI cables. As far as 8K content goes, where is it? Is the price of an 8K cable worth it when there is no content? Is it better to get an appropriate 4K HDMI cable now and then an 8K cable later?

 

For your LAN connectivity let your modem/router/switch do its job in establishing a connection to your ISP via NBN modem. Run a CAT cable from your network device to your TV and/or receiver. As a minimum go for CAT6 but you can go higher if you want. Check the TV and receiver capability but I doubt you will get any benefit above CAT6. If you do want optic fibre you can go down that expense but your TV and receiver network interface cards may be maxed out at CAT6 anyway (check their specifications). If you don't want to run 2 cables from modem/router/switch then run 1, place a switch near the receiver and run 2 cables from that switch to TV and receiver (this would be my recommendation).

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How fast can you go ?
Cat 6 is enough for most people. The bottleneck isn't in the cables typically.

Wifi signals, the source, and even the end equipment are usually where the slowdown occurs.

Cat 7 costs a lot more, but sure if you have a large home and a optical >1Gb internet broadband connection, it might be good to future proof the home.

I'm getting close to 1Gb on LAN but it's meaningless because you'll never see those speeds in downloads for example.

Just FYI a 4k video will only use up a max of 25-40, so there's plenty of capacity even if you have a 200-300 Mb connection.. 

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Power line adaptors!!!


Modem into router into power line adaptor at input to the house. Power line adapter then cat 6 to the tv at the other end of the house. No messy wiring inbetween. It’s what I’ve done, as others have eluded to it will not be the bottleneck in your system. Was the only way I could get my smart tv to satisfactorily stream 4K, and I am fibre to the premises as well.
 

Depending on what your house is like, the power line end point can have a second wifi network as well. We had to do that in our old house which was a concrete box with the modem at one end in a bedroom and living areas at the other end.

 

Cheers,

Andrew

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Posted (edited)

Thanks for the welcomes and replies 

 

I have read through each of the replies a couple of times and trying to understand bits of information, yet I am still confused about the path I should be taking to maximise the benefit of the equipment that I hopefully will be getting later in 2020 and early 2021.

 

I'm not sure whether HDMI 2.1 is a good idea for future proofing ... or whether it is a bit of a marketing con?

LG is going for it, Sony and Panasonic aren't and Denon has just released an AVR series with only one HDMI 2.1 input.

Is this just to cater for the gullible like me who get drawn into believing you should have it to take advantage of future tech..?

 

I don't want to be spending the big bucks on cables if it doesn't make any or little difference ... yet would rather avoid problems with signal transmission due to inadequate cable quality.

 

I should probably go visit a few HiFi / HT stores with a diagram of my house layout and explain what I want so that they can put up the options ... depending on how much I am prepared to spend ... so that I can decide which way to go.

 

No doubt it will all be worked out In the end  ...  interesting journey.

 

Cheers to all :thumb:

 

 

ps.  Will be giving above replies further consideration. Thx for the info ... appreciated.

 

 

 

Edited by Moonlight

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