10mm dedicated spurs

I suppose a Naim would also sound good on a flat surface somewhere with a nice piece of telephone cable between speaker and amp

Bigger wire + bigger circuit breaker = lower impedance on the mains. Lower impedance = better sound.

regards,

dave

What size breaker do you use for your system?
Do you have a seperate fuse board for your spur/s?

Yes, I use a "slow" fuse in the fuse board, only connected to the cable going to the hifi (in my case, a 7x2,5 wire cable, using 2x3 for the "hot" phases and 1 for neutral)

cheers
Stefan

Let your ears decide...

Darren, you may well be 100% correct.
There are - however many owners of very large sledgehammers with some perfectly cracked brazils (though I prefer hazels myself)on this forum.
Since when did logic dictate what our ears told our brains?
Me, I have the magic 13 in my system - all of them 10mm.
Stefan - please no 'f' word or this will get nuked.
Darren. If you do a search on this you will find a ton of threads & info on it. Some folks get a positive result, some folks dont. Just like the rest of Hi Fi realy.

I have 4 x twin unswitched sockets on a radial circuit from my existing DB using bog standard 2.5mm2 T & E.

Sounds bloody fab to me.

i did replace the 2.5 with 6mm as it was suggested this would sound better.

Well, i have to say, the 6mm is still there, but its disconnected and the 2.5 put back.

I found that using a bigger cable muddied the sound somewhat and i lost a fair bit of detail.

At the end of the day, as you are a sparky, you can try both and see which you prefer.

Darren,
where are you based - come listen for yerself...

I am based in sunny old Reading

bit far from notts - up to you.
I would say my four spurs into unswitched mk double 13a sockets is the best vfm upgrade - full stop! - i have done.

I have also done the ring main v single spur with hydra v 4 spurs - i'll stick with the latter, thanks.

andy c!

quote:

As an electrician of 16 years the idea of using a 10mm feed for a spur

A few electricians I have spoken to don't accept the term "spur" – prefering, if I recall correctly, "independent radial".

As an electrician of 16 years' you probably wanted to say that a spur (being an offshoot from a socket or junction box) must be connected to the existing circuit using the same cable as used in the main circuit. So I suppose that you would strictly, under regulations, refuse to add a 10mm spur - as the likelihood of a 10mm ring main is small.

The purpose of the dedicated radial is to connect the hi-fi system back to the consumer unit with minimum impedance.

I am not an electrician but then, until proof be offered, neither is anyone on this forum.

Hi Darren;

I've known several qualified electricians say that a high capacity/low impedance spur is unneccesary for a Hi-Fi system.

Fortunately, the electrician who installed mine, worked at my local Naim dealership, and had a good system at home.

I can only report that it works.

John.

quote:

Originally posted by Adam Meredith:
until proof be offered, neither is anyone on this forum.

I'll pop up and do you a radial

quote:

Originally posted by jasons:
I'll pop up and do you a radial

That's a disgusting offer.

10mm is over the top and detrimental to the sound. The best sound comes from a separate single spur to a switchless Crabtree socket, which is then daisy-chained to further sockets.

Use Pirelli 6mm cable throughout.

count.d

your having a bit of a laugh...

Andy

Count.d is actually spot on.

I know nothing about electricity and it is something that I stay well clear of. However before I retired, I spent 14 months working in the energy supply industry for gas and electricity.

Nearly all of the electrical guys were members of the Institute of Electrical Engineers which is about as high as you can go. Their knowledge is unbeatable.

I had chats to several of them relating to computers and hifi.

The advice was consistent. PC's work well off the ring circuit but good hifi works best with a single spur, 6mm cable and a 15amp crabtree socket.

That is qualified advice ... end of discussion.

Regards

Mick

quote:

That is qualified advice ... end of discussion.

There you go Andy, we are inevitably incorrect. End of discussion.
What it must be like to know for certain that you simply cannot be wrong, and qualify it.

quote:

Nearly all of the electrical guys were members of the Institute of Electrical Engineers which is about as high as you can go. Their knowledge is unbeatable.

Unbeatable?

Whatever.

Steve

What is your occupation and are you qualified to question their judgement.

The worst thing an ill informed amature can do is give out bad advice which may be taken up by some one, thus degrading their system.

If you don't know....best to keep quiet

Regards

Mick

quote:

What is your occupation and are you qualified to question their judgement.

What my ocupation is and what my qualifications are have zero to do with this.

I had a 6mm spur.

I replaced it with multiple 10mm spurs and it was all checked over by a fully qualified electrician.

It was all correct.

The system sounded way better for it.

End of discussion.

Steve

You are not qualified ... end of discussion.

Also stop giving out advice that could screw up someones system.

Why don't you offer to re design the NAP500, afterall you seem keen to offer advice on things you know little about.

People like you are, frankly, a bloody nusiance and do more harm than good.

Regards

Mick

Mick,
Franky, you need to get your facts straight.

quote:

Darren. If you do a search on this you will find a ton of threads & info on it. Some folks get a positive result, some folks dont. Just like the rest of Hi Fi realy.

Where have I said anything that could screw up a system? People can make their own minds up.

Your advice for 6mm would have screwed up mine.

"Your advice for 6mm would have screwed up mine." ... Quote Steve

Steve

Please note one correction, it was not my advice but that of several very highly qualified electrical engineers.

I cannot comment whether your system sounds better or not but the term auto suggestion comes to mind.

My point is simple, it is counter productive for unqualified people to offer advice.

Regards

Mick

My unqualified advice is to install a 6mm spur alongside n x 10mm spurs and use whichever sounds best.

Highly qualified does not mean infallible, it is an opinion that should be listened to but if it does not conform to experience in a specific area then say thank you and ignore it.

I have a colleague who is a very experienced electronic enngineer - he profoundly does not subscribe to the Naim design strategies re power supply etc etc. He believes the quality of the sound on my system is totally a result of the loudspeakers.

However he likes the sound that the system produces.

Qualifications can sometimes confuse experts who want to follow the rules and find it difficult to think outside of the standard box.

quote:

Originally posted by Adam Meredith:
The purpose of the dedicated radial is to connect the hi-fi system back to the consumer unit with minimum impedance.

This is the bit that intrigues me. Wouldnt a dedicated ring offer lower impedence than a spur and no greater antenna effect if run together?