NAIM Design Criticism
Posted by: ErikL on 10 May 2003
Hello,
I do not currently own any NAIM equipment, but I certainly aspire (I hope to save for an entry-level NAIT5/CD5/FC2 system w/ bookshelf speakers; possibly Epos, JMLab, Neat, or Dynaudio). I recently found the following post, dated July 2000, on another hi-fi board.
I am very interested in any design insight or clarification from folks here.
Thanks,
-Erik-

"To the Naim owners and fans, skip over this post it will be painfull.
All Naim products are NOT high performance audio equipment by their electronic design. I will not address their looks, price, marketing,ect. I will only state the electronic facts, and they are shamefull. As I stated before the basic core circuit design was a rip-off from a mid 60's RCA design book. It is pure class B and full of crossover distortion. If you like that sound you bought the right amp! The signal coupling cap are the worst you could pick TANTALUM! The 1980's amps had undersized power supplys and their voltage went up and down with the bass (remember the phrase about the music having "jump" and "bounce", well thats what the DC voltage was doing), not a good thing. The quality of the parts inside was not what any of us would want, their tolerance was to large.
If you took a Naim product to a REAL audio engineer they would shake their heads. Naim saw this and started making small changes to correct their problems, but they could not do to much or that would cast a bad light on their old products. They are better now but not good enough to be "high-end". To do this the would have to start over with a clean sheet of paper, no more RCA class B.
Remember a salesmans job is to get YOU to give HIM YOUR MONEY, and they did unfortunately in the case of Naim."
[This message was edited by Ludwig on SUNDAY 11 May 2003 at 05:21.]
[This message was edited by Ludwig on SUNDAY 11 May 2003 at 05:27.]
I do not currently own any NAIM equipment, but I certainly aspire (I hope to save for an entry-level NAIT5/CD5/FC2 system w/ bookshelf speakers; possibly Epos, JMLab, Neat, or Dynaudio). I recently found the following post, dated July 2000, on another hi-fi board.
I am very interested in any design insight or clarification from folks here.
Thanks,
-Erik-
"To the Naim owners and fans, skip over this post it will be painfull.
All Naim products are NOT high performance audio equipment by their electronic design. I will not address their looks, price, marketing,ect. I will only state the electronic facts, and they are shamefull. As I stated before the basic core circuit design was a rip-off from a mid 60's RCA design book. It is pure class B and full of crossover distortion. If you like that sound you bought the right amp! The signal coupling cap are the worst you could pick TANTALUM! The 1980's amps had undersized power supplys and their voltage went up and down with the bass (remember the phrase about the music having "jump" and "bounce", well thats what the DC voltage was doing), not a good thing. The quality of the parts inside was not what any of us would want, their tolerance was to large.
If you took a Naim product to a REAL audio engineer they would shake their heads. Naim saw this and started making small changes to correct their problems, but they could not do to much or that would cast a bad light on their old products. They are better now but not good enough to be "high-end". To do this the would have to start over with a clean sheet of paper, no more RCA class B.
Remember a salesmans job is to get YOU to give HIM YOUR MONEY, and they did unfortunately in the case of Naim."
[This message was edited by Ludwig on SUNDAY 11 May 2003 at 05:21.]
[This message was edited by Ludwig on SUNDAY 11 May 2003 at 05:27.]
Posted on: 13 May 2003 by Paul Ranson
Date: May 13, 1999 09:35 AM Author: julian vereker Subject: points Class A or B, What I meant was that if 'a' designed a class A amp and it worked, and he then went on to design a class B amp it probably wouldn't work or it would work less well - because class A masks a lot of design issues that one has to address in class B. Next if 'b' designs a class B amp and it works, it is probable that his class A design would also work as well, but would get a lot hotter and cost a lot more. Ultimately Class B brings you closer to the design edges and requires one to address many issues with greater precision than class A, and so it is very likely that a class B amp will be better - but that is apart from the detrimental effects of heat and size in a class A. Many of the comments about power amps' power supplies forget that these come in several flavours, for example: unregulated, and regulated plus a combinations of these. In our best amps we have always used regulated power supplies, and I'm sure I said sometime that it didn't make any sense separating power amp from supply. I thought a Nuvista was a noval ceramic valve (tube) in the '60s, I wonder if it is still a registered name? julian
Date: May 03, 1999 03:35 PM Author: julian vereker Subject: Class A (pure or otherwise) Class A in a poweramp is grossly wasteful of non renewable resources and that is one of the reasons why any new amp that Naim launches will be class B. julian
Date: March 29, 1998 07:11 AM Author: julian vereker Subject: op amps Op amps suitable for audio didn't exist when I designed our power amp circuit and even today one can probably do better with discrete transistors. I feel that you have been misled by published stories concerning class A and class B, our amps are class B and do not exhibit crossover distortion, nor is it inevitable that a class A (or more usually AB) amp will not suffer from crossover artifacts. julian
Date: March 29, 1998 03:55 AM Author: julian vereker Subject: Bias All Naim power amps are class B and they have as low a bias as we can manage, just a few milliamps. There are two reasons for doing this, in order to make a good push/pull power amp, the two halves need to match very closely since there is only one common feedback loop - this applies whatever the 'class' of the amp. If one achieves this degree of precision then one only needs a very small bias current. Also it is extremely wasteful of resources making class A power amps, since they use large amounts of electricity even when they are not playing music, this means the waste heat has to be dissipated into the atmosphere without overheating the components and thus shortening their lives, which implies large heatsinks, big heavy and expensive in terms of resources pieces of equipment. There are quite a few power amps about, that are called class A for marketing reasons, but are in fact to all intents and purposes, class B. (Save the planet - buy class B). julian
I wonder what this will look like... (pretty good! If you could see the source!)
Paul
Posted on: 13 May 2003 by Geoff P
quote:
In this thread was written:
"All a guy like Art Dudley (and others) did was come along and say "so friggin' what???? Who cares?? I dont know how many THD's my amp has and I dont care to. My speakers (lowthers) are peaky and dont do this or this... but I friggin' LOVE them!!" Round-earthers hate the man for this and write letters of protest to his new magazine..."
Did I miss something??? Does Art Dudley have a NEW magazine??? PLEASE advise!!!
GREG
It depends if you realise that Art's current location is Stereophile magazine.
By the by he sounds pretty irrascible. In a recent stereophile Art was berating the concepts of HiFi electricity supplies since they are ultimately attached to the crap wire the utility company uses. He then went on to discuss the lack of noticeable differences in all the expensive HiFi interconnects BUT retracted some of these comments later in the article in an intersting discussion on how you should evaluate if you are searching for the differences.
However it has to be said he talks a lot of sense since he agrees with this forum that the pleasure is in the music no matter what the system paper specs say.
GEOFFP
Posted on: 13 May 2003 by Paul Ranson
quote:
Forgive me if I'm getting confused, but out of interest, doesn't the NAP 500 have its power supply [externally] separated from the amplification section?
The regulators are adjacent to the power amps, just the raw supply is separately boxed.
Paul
Posted on: 13 May 2003 by Eric Barry
It's worth noting that the basic circuit topology of most amplifiers, be they tube or transistor, are based on old designs and textbooks. The first thing any engineer does is look at what's been done in the past.
Secondly, any product is part theory and part implementation. Naim seem to have the implementation down pretty solidly, based on their success in producing excellent sound, garnering high market share, and making products which are extremely reliable.
--Eric
Secondly, any product is part theory and part implementation. Naim seem to have the implementation down pretty solidly, based on their success in producing excellent sound, garnering high market share, and making products which are extremely reliable.
--Eric
Posted on: 13 May 2003 by Tuan
quote:
Originally posted by Eric Barry:
It's worth noting that the basic circuit topology of most amplifiers, be they tube or transistor, are based on old designs and textbooks. The first thing any engineer does is look at what's been done in the past.
Secondly, any product is part theory and part implementation. Naim seem to have the implementation down pretty solidly, based on their success in producing excellent sound, garnering high market share, and making products which are extremely reliable.
--Eric
NOT A SINGLE OFFICIAL RESPONSE from The Naim temple. hahahah.
Posted on: 14 May 2003 by Johns Naim
Here's a fairly simple, but perhaps revolutionary thought for the HiFi specs, soundstaging, imaging and resolution freaks/obsessives.
Listen to the music.
Oh, you've heard that one before?
Well far be it from me to be a bore, but here I was labouring under the misunderstanding that having a HiFi in the home was all about listening to the music.
Not the system, or the recording, the acoustics of the recording space, artificialy induced or real, subway trains, small children tripping over mike cords, or the second violinist scratching their nether regions.
Or did I miss something?
Speaking as a trained/performing musician, I find so many HiFi 'golden eared' enthusiasts are more enamoured of the ability of their HiFi 'toy/hobby' than they are of the music they actually play on their systems.
So often, the emphasis seems to be on the music being the means to 'show off/demonstrate' the HiFi. So much so, that I actively discourage various friends/associates from wanting to come over 'for a listen' to my Naim HiFi, as invariably it is always about making comparisons v's their own equipment etc - a task best left to a HiFi dealer, - and a gesture of friendship, that experience has taught me to be predominately a somewhat meaningless excercise for all concerned.
I listen to music on my system, NOT the system itself. IMV, that is because it's calibre is sufficient in it's qualities of reproduction, that it 'gets out of the way' as it were, and allows the music to come through re communication of the musical message.
Soundstaging and imaging is important to be sure in re creating the sense of living performers in ones room/space, or perhaps the sense of looking out through an acoustic window on to a stage if one prefers that analogy.
As such, the sense of air and space between performers/instruments, and in the case of an orchestra, some semblance of the traditional layout of an orchestra, very much aids in the sense of 'realism' re the venue, assuming one had an ideal seat/perspective.
As has been already pointed out however, this is very much a variable depending upon the venue, where one is seated/standing, or the mix of the individual recording as laid down by the engineer.
Having played in orchestras, perhaps hearing another player drop his music sheet for example, might increase that sense of 'being there', but only if one had reference to the original performance if listening to a recording of that event.
And you'd have to have been in the Orchestra, not the audience to notice it. Otherwise, did it happen? Was it meant to happen? A mistake perhaps? Or more to the point IMHO, in musical terms, does it really matter?
Does one want/need to hear the subtlties captured by multi-miking, or to listen to the music.
IF one is listening to the music, the overall resolution, and tonal balance of the system will render vocal and instrumental timbres accurately enough to make the instrument believable and identifiable in its sonic signature, notwithstanding that this same high resolution will capture hiccups, heavy breathing etc if it exists on the recording.
Hence, being able to tell the difference between a Bosendorfer and a Steinway is an important consideration for me for example.
Being able to hear fully fleshed out tonal timbre, with the harmonic texture 'just right' is one of the Naim qualities re MUSICAL reproduction I have seldom heard elsewhere, excluding some valve amps, and electrostatics also do very well here in the speaker camp.
If you're playing an instrument such as a piano, assumning a level of technical ability/mastery of the instrument, then their is a world of difference between artistry, and simply 'being a typist' as one of my teachers was oft to say in criticism of pianists who merely 'played the notes' as she so aptly put it.
It's the subtlties of rubato, the way one shapes a phrase, individual weighting of notes re finger pressure, and speed of attack that determines the tone, and most importantly the way music is communicated not just as notes on a page expressed in notation as variations in pitch and time, but a musical message to which we respond both intellectually and emotionally.
And that's the difference between merely playing the music/instrument, and being an artist with something to say and share.
THAT is why a HiFi system MUST have excellent dynamics, both major and micro if you will, to correctly reveal these subtle nuances of timbral tone, pitch, and above all, timing if it is to have any hope of actually reproducing MUSIC, as against hall/studio acoustics, and the 2nd violinist parting wind as others have so eloquently put it etc.
Music is just that - we know it when we respond to it. It is not some sort of abstract acoustic wallpaper which we sit back and analyize like so many audiophiles do - carping over this and that of the recording.
And that is why I use Naim equipment, as after many years of musical study, and many involved in the HiFi world, I have not found anything else that 'does' it better in regard to it's ability with tonal timbre, and dynamics; just two, but perhaps the most important of some of the aspects of a HiFi's ability re musical reproduction IMV.
Anyway, rant over
I hope I didn't offend anyone, and my apolgies if that comes across, but I must admit to becomming more than a trifle annoyed at discussions that seem to miss the whole point of a HiFi, and that is to enable you to listen to, and respond to MUSIC.
Pretty much everything else is artifice IMHO.
Musically yours
Cheers,
John
Populist thinking exalts the simplistic and the ordinary
Listen to the music.
Oh, you've heard that one before?
Well far be it from me to be a bore, but here I was labouring under the misunderstanding that having a HiFi in the home was all about listening to the music.
Not the system, or the recording, the acoustics of the recording space, artificialy induced or real, subway trains, small children tripping over mike cords, or the second violinist scratching their nether regions.
Or did I miss something?
Speaking as a trained/performing musician, I find so many HiFi 'golden eared' enthusiasts are more enamoured of the ability of their HiFi 'toy/hobby' than they are of the music they actually play on their systems.
So often, the emphasis seems to be on the music being the means to 'show off/demonstrate' the HiFi. So much so, that I actively discourage various friends/associates from wanting to come over 'for a listen' to my Naim HiFi, as invariably it is always about making comparisons v's their own equipment etc - a task best left to a HiFi dealer, - and a gesture of friendship, that experience has taught me to be predominately a somewhat meaningless excercise for all concerned.
I listen to music on my system, NOT the system itself. IMV, that is because it's calibre is sufficient in it's qualities of reproduction, that it 'gets out of the way' as it were, and allows the music to come through re communication of the musical message.
Soundstaging and imaging is important to be sure in re creating the sense of living performers in ones room/space, or perhaps the sense of looking out through an acoustic window on to a stage if one prefers that analogy.
As such, the sense of air and space between performers/instruments, and in the case of an orchestra, some semblance of the traditional layout of an orchestra, very much aids in the sense of 'realism' re the venue, assuming one had an ideal seat/perspective.
As has been already pointed out however, this is very much a variable depending upon the venue, where one is seated/standing, or the mix of the individual recording as laid down by the engineer.
Having played in orchestras, perhaps hearing another player drop his music sheet for example, might increase that sense of 'being there', but only if one had reference to the original performance if listening to a recording of that event.
And you'd have to have been in the Orchestra, not the audience to notice it. Otherwise, did it happen? Was it meant to happen? A mistake perhaps? Or more to the point IMHO, in musical terms, does it really matter?
Does one want/need to hear the subtlties captured by multi-miking, or to listen to the music.
IF one is listening to the music, the overall resolution, and tonal balance of the system will render vocal and instrumental timbres accurately enough to make the instrument believable and identifiable in its sonic signature, notwithstanding that this same high resolution will capture hiccups, heavy breathing etc if it exists on the recording.
Hence, being able to tell the difference between a Bosendorfer and a Steinway is an important consideration for me for example.
Being able to hear fully fleshed out tonal timbre, with the harmonic texture 'just right' is one of the Naim qualities re MUSICAL reproduction I have seldom heard elsewhere, excluding some valve amps, and electrostatics also do very well here in the speaker camp.
If you're playing an instrument such as a piano, assumning a level of technical ability/mastery of the instrument, then their is a world of difference between artistry, and simply 'being a typist' as one of my teachers was oft to say in criticism of pianists who merely 'played the notes' as she so aptly put it.
It's the subtlties of rubato, the way one shapes a phrase, individual weighting of notes re finger pressure, and speed of attack that determines the tone, and most importantly the way music is communicated not just as notes on a page expressed in notation as variations in pitch and time, but a musical message to which we respond both intellectually and emotionally.
And that's the difference between merely playing the music/instrument, and being an artist with something to say and share.
THAT is why a HiFi system MUST have excellent dynamics, both major and micro if you will, to correctly reveal these subtle nuances of timbral tone, pitch, and above all, timing if it is to have any hope of actually reproducing MUSIC, as against hall/studio acoustics, and the 2nd violinist parting wind as others have so eloquently put it etc.
Music is just that - we know it when we respond to it. It is not some sort of abstract acoustic wallpaper which we sit back and analyize like so many audiophiles do - carping over this and that of the recording.
And that is why I use Naim equipment, as after many years of musical study, and many involved in the HiFi world, I have not found anything else that 'does' it better in regard to it's ability with tonal timbre, and dynamics; just two, but perhaps the most important of some of the aspects of a HiFi's ability re musical reproduction IMV.
Anyway, rant over
I hope I didn't offend anyone, and my apolgies if that comes across, but I must admit to becomming more than a trifle annoyed at discussions that seem to miss the whole point of a HiFi, and that is to enable you to listen to, and respond to MUSIC.
Pretty much everything else is artifice IMHO.
Musically yours
Cheers,
John
Populist thinking exalts the simplistic and the ordinary
Posted on: 14 May 2003 by Andrew L. Weekes
quote:
NOT A SINGLE OFFICIAL RESPONSE from The Naim temple. hahahah
If you are one of the very few manufacturers, even after all these years, that have actually managed to implement class AB designs correctly, you don't then go telling the competition how you do it
JV's posts were as ever a goldmine of useful information, giving away much more than initial readings indicate. Scratch the surface for more...
Andy.
Posted on: 14 May 2003 by Andrew L. Weekes
quote:
Forgive me if I'm getting confused, but out of interest, doesn't the NAP 500 have its power supply [externally] separated from the amplification section?
I can't find the quote, but JV defined it as a 'subtle change of the rules'.
As Paul points out the regulation is closer to the circuits than before, but the raw supply resides in an external box.
The connectors used to feed the power from 500PS to NAP500 weren't available when the original statement was made.
Andy.
Posted on: 27 May 2003 by Martin Payne
Andy,
It was a fairly obvious statement to make at the time, I guess the rest of us were just a bit too polite to mention it!
cheers, Martin
E-mail:- MartinPayne at Dial.Pipex.com
quote:
Date: 19-Nov-99 03:43
Author: Andrew Boshoff
Subject: interview quote
But some things have changed since the interview:
JV: "...I can't think of any audiophile or high-end companies that manufacture a power amplifier which comes in two separate boxes, one the power supply and one the amplifier. It's just not a sensible way of doing it, of putting that sort of uncertainty of a separate cable in between the power supply and amplifier part of it"
And now we have the NAP500 with its separate power supply.
Andrew
It was a fairly obvious statement to make at the time, I guess the rest of us were just a bit too polite to mention it!
quote:
Date: 19-Nov-99 11:38
Author: julian vereker
Subject: Yes & no
Andrew,
Actually nothing has changed (much). What we have done in the 500PS is to take the AC mains and turn it into several raw DC supplies which are then taken to the 500 itself using new connectors of a type and rating which only became available a few of months ago.
All the power supply regulation is in the 500 and is in fact even closer coupled to the power amps than in the 250.
Just a subtle change of the rules.![]()
julian
PS I've been wondering how long it would be before someone would draw my attention to that part of that interview - I think it deserves a free (Naim) CD - please email me at Naim with an address and a choice (if you wish).
cheers, Martin
E-mail:- MartinPayne at Dial.Pipex.com
Posted on: 28 May 2003 by syd
If this guy is happy when showing the beautiful components contained in his HiFi boxes, well, fine by me! I personnaly prefer to enjoy music.
I agree fully. I wonder if this the reason wer'e seeing more and more Amps etc. with Clear perspex casings or windows. A case of never mind the (sound) quality, see the parts.
Still can't help feeling that if you're really hearing all that detail at a live concert (and I certainly dont, irrespective of where I sit or stand)) then the artists aren't doing their job right and letting you become distracted by incidentals. Still each to their own.
Yours in Music
Syd
I agree fully. I wonder if this the reason wer'e seeing more and more Amps etc. with Clear perspex casings or windows. A case of never mind the (sound) quality, see the parts.
Still can't help feeling that if you're really hearing all that detail at a live concert (and I certainly dont, irrespective of where I sit or stand)) then the artists aren't doing their job right and letting you become distracted by incidentals. Still each to their own.
Yours in Music
Syd