Question Atmos Speakers Wiring

Sgt Hartman

Active Member
Hi guys,

I would like to complete my HT system installing 4 Atmos speakers, the up-firing ones would be the simplest but certainly less satisfactory solution in terms of final result, so I would like to try with ceiling speakers but I have a big problem to deal with and I would to have you opinion about the feasibility.

Not being able to create a false ceiling for the entire extension of the room, this would imply the divorce, my only chance would be to pass 4 speaker cables through an existing electrical corrugated tube where the electric cables of the chandelier already pass. The idea would be to remove the current chandelier cables and make a complete rerun of all the cables, both the chandelier and speakers, from scratch, all this though the corrugated which, measured, has a diameter of 1 cm. Theoretically/geometrically 4 cables of 2 x 0.75 sq mm would fit and leave enough space for the cable of the chandelier, but practice is certain to be quite another thing.

It sounds a lot like an impossible mission but I was wondering if any of you had experiences in this regard and any suggestions, thanks!
 

gibbsy

Moderator
Personally I would not run speaker wire alongside electrical cable. It would be possible if you do not have those lights on at the same time you are listening to the speakers if those lights can be turned off and isolated at that time. It's not a safety issue it's more of an interference issue with the audio.

Using four Atmos upward firing speakers can sound very good indeed and would be easier for you wiring wise. This though does depend on the actual ceiling being completely flat and made of reflective material and be between 2.5 and 4.25 metres high. I've been using just a pair of KEF R50s for over four years now and I'm more than happy with them.
 

Sgt Hartman

Active Member
Personally I would not run speaker wire alongside electrical cable. It would be possible if you do not have those lights on at the same time you are listening to the speakers if those lights can be turned off and isolated at that time. It's not a safety issue it's more of an interference issue with the audio.

Using four Atmos upward firing speakers can sound very good indeed and would be easier for you wiring wise. This though does depend on the actual ceiling being completely flat and made of reflective material and be between 2.5 and 4.25 metres high. I've been using just a pair of KEF R50s for over four years now and I'm more than happy with them.
Well, of course there is the chance to have both speakers and lights on at the same time, I didn't think that this might create signal's interference...
About up-firing, I don't know, I mean I could, I've a concrete ceiling and 2.70 m height, but who tried both clearly says that difference is evident, this discourage me a bit to afford such investment for a "meh" result.
In terms of speakers I'd be forced to go with Kef Q50a or R8a, since the only ones with connectors on the back and given that R50s are no longer available.
 

gibbsy

Moderator
Having speaker wire close to the mains wiring can often be the cause of a ground loop hum and the consensus is not to have speaker and electrical wiring running along side each other or in the same conduit. I'm not saying it will but there is certainly a chance and it's one of those decisions that unfortunately you will have to live with.

A concrete ceiling is absolutely perfect for reflecting the sound that the upfiring speakers generate. This time you are stumped with a financial decision over a wiring one. Ceiling speakers are certainly going to give the very best results and as you are wiring from scratch then maybe taking advice on the best shielded cables for both mains and speaker cables is a plan worth a gamble.
 

Sgt Hartman

Active Member
A concrete ceiling is absolutely perfect for reflecting the sound that the upfiring speakers generate. This time you are stumped with a financial decision over a wiring one. Ceiling speakers are certainly going to give the very best results and as you are wiring from scratch then maybe taking advice on the best shielded cables for both mains and speaker cables is a plan worth a gamble.
Well, wiring from scratch in theory, I still don't know if the tube will allow me to re-run cables as I wish, there might be doglegs giving me hard times, etc., plus interference that I didn't take into account. I don't know, seems to me more than gambling, considering also that I should by wires in advance without the guarantee that it'll work.
I'll think about it, thanks for the tips.
 

Sgt Hartman

Active Member
@gibbsy just the last advice. If I'll go with up-firing it'll be Kef Q50a or R8a. Usage will be only for movie, I listen music only in 2.1, I'm wondering if it's worth it to spend more for the R serie rather than the Q one, thanks.
 

gibbsy

Moderator
That's a difficult choice. I was an early purchaser of the R50s and even then they were expensive. Again I think that's down to you and would it be worth it for you. The R Series are beautifully made and do have much better components involved, yet I think at the new price the R8s are somewhat overpriced. There again it is what I would buy.

Upfiring speakers will certainly make your overall soundstage 'taller' for want of a better word. I do use them for concert DVDs and blu rays with most of that coming from DTS:Neutral for DTS HD soundtracks. I don't use it for multi channel SACD though. For stereo music I always play that through my Denon SACD player and Rega amp.

If, for some reason, that my R50s bit the dust I would purchase another pair, more than likely R8s, without hesitation.
 

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