Dedicated Mains

Could you please share the exact model for the Gigawatt Circuit Breaker and the Doepke RCCB? I have a separate Hager CU pictured below so I presume these are compatible.

Ver nice. So you have two REL S510 or S812. I only have one S510.

I noticed your other spare high-end bookshelves are stored on the Ikea Bror shelf. Great idea. I have the Bror too and used to have my unused additional amps and CD player on it.

In UK I used Doepke RCCB DFS 2 040-2/0,03-F Audio and for MCB’s I used Gigawatt Circuit Breaker G-16A.

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These subs are special carbon models. They are used to expand the soundstage and improve the mid and high ranges, rather than to extend the bass. They’re barely audible, but once turned off, their huge impact on the sound quality becomes noticeable.

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Many thanks @Eagle3333 much appreciated. Also I was wondering how did you terminate the 10mm2 cable in the Furutech socket. Did you use a separate junction box to terminate the 10mm2 and from there install two short runs of smaller cable to each of the Furuech sockets in the double socket enclosure or did you use another way? My current setup is with a double unswitched MK socket that has already the two sockets daisy chained internally and can take 10mm2 cores without an issue which I’m not sure is the case with Furutech sochets.

Hope this helps:

I changed the CU in the image as it could only deal with 2 lines and I subsequently wanted 3. Now I have a standard Wylex CU capable of 4 lines. In each of my 3 radials, each 10mm cable runs direct from the dedicated CU to its 2 gang, unswitched socket - with one modification: my sparx ran a separate earth wire, for/from each socket to CU instead of using the earth wire in the mains cable. A recording studio had previously told him this was optimal; I’ve no idea if it really is so. Daisy-chaining the sockets would have been easier and cheaper but we felt 3 radials would be most effective.

Mains cable used - MCRU Double screened mains cable. I did use some expensive Furutech stuff on one socket but replaced it as the sound was too thin/harsh. The MCRU cable was cheaper and more utilitarian-looking - which proved I wasn’t experiencing expectation bias!

Sockets: I don’t use Furutech. I tried different makes to see if I could hear a difference. I couldn’t. I use 2 gang, unswitched. The 10mm fixing wasn’t an issue - my sparx has the patience of a saint :

1 x MCRU - MS HD Power UK Mains Wall Sockets - Gold Plated
1 x MK Logic Plus 13A 2 Gang Unswitched Socket
1 x bog standard from CES

So those are REL Carbon Specials used to improve mid and high frequencies. Looks like everything in your system is high end. :sweat_smile:

The placement of the subs in your room is interesting as they are out from the corners of the room, placed directly in front of the speakers. Perhaps I’ll need to experiment with the placement in my room since it’s trickier with a single sub.

Ahh that makes sense. Many thanks for the detailed explanation, much appreciated.

Excellent write up, interesting using individual earths from each socket, I’m just in the process of installing ours just waiting on the electrician to pop in, might add the separate earths before we finalise the circuit, it’s all good fun.

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I have problem that whenever any visitors press the doorbell. I loose the audio signal for fraction of a section. I have separate circuit from the mains still the problem persists. Any views. All electrical engineers here in mumbai are unable to find the fault. They point finger at my component that is Naim amp.

What type of doorbell, wireless, battery, wired, how it’s wired, etc. probably best to raise a new topic for this

How long did you have the Furutech cable installed before you decided to replace it?

About 3 months from memory; equivalent to about 175 hours of draw under load and almost permanent draw on idle.

Do you remember what series of cables you used, thin/harsh is not a word I would use for any of their current offerings.

Yep - Furutech FP-3TS20

So one of their older cables, no experience with this cable. Though my first thought is being only 14awg, it may be on the thinner sounding side vs a heavier gauge option. Also, being PCOCC it would probably be more revealing of what its attached to vs a lower quality OFC, etc. So maybe highlighting an issue with an outlet, etc?

Maybe; who knows? We did take impedence readings on the different lines and found only tiny differences between the Furutech line and the others - as I recall. I don’t remember terribly well - was 2018. But I normally remember things that were very obviously good or bad! At that time I had Gryphon electronics. The basic MCRU shielded was just more natural sounding and I never looked back.

I do recall reading some who are big fans of their current offerings say that they didn’t like their older designs, so maybe it was just a bad sounding cable…

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As you have said in the Furutech thread, it might of been the connectors and not the cable.

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I am also using just one sub a REL s510, on the inside a PMC 20/26, it is angled so it faces the corner of the far opposite wall at the end of my room. Key thing here is that your loudspeaker sits more forward than your sub, when playing sound is very seamless with loudspeaker and not unbalanced, at lower frequencies sound is non-directional so one sub should be absolutely if integrated properly. Very much trial and error, a system disc such as Nordost helped me no end to end to get the gain etc right.