Riders take a trip to the round earth….more amplifier casualties.

Posted by: David Hobbs-Mallyon on 23 May 2003

As our planned revisit to Nick's house to hear his new 252/500 set-up was once again delayed by his ongoing electricity saga, the Riders were getting itchy feet and keen to get out and hear another sistem. Under the influence of alcohol, David Coster had foolishly agreed to such a visit on our last visit to Alex S.'s. All of us were curious to hear David's sistem, as he has strayed from a pretty high-end Naim set-up, to a much rounder-earth sistem, and it's always good to hear what the alternatives out there are like.

Dave J, Tom and I arrived early and had a quick look round a quite unfamiliar set-up. David's system consists of

Sources: Vinyl is David's main source and LP12/DV17D2/Armageddon/Trichord Deliphini Mk2. David currently has two CD players, a Musical Fidelity NuVista and a Denon DVD 2800 + Midiman DAC.

Amplification: Bat VK-40 Preamplifier, with Advantage M300 monoblocks. David also had to hand a prototype Tripath based amplifier that he has been building, and which we started the evening.

Stands - Mana, Phase 5ish (I lost count) on the turntable, and Phase 2 on everything else.

Speakers - Quad 988s

I think it's fair to say that David's complete change of sistem has been driven by his love affair with the Quads. Visually when you walk into his room, it's the first thing you notice. I've briefly heard Quads a couple of times, and have been impressed, so was keen to get a good listen this time. One of their oddities is that if you stand to the side of them you get to hear the sound coming from the back wall. The sweet spot seems to be in the middle a few feet away from the speakers, not unlike Tom's 'Big Headphones' arrangement. Needless to say, Tom was in his element for the evening, assuming the Lotus position on the floor, only moving to outstretch his hand for a refill when the wine was being passed round. I had always assumed that Quads were very easy to drive with wimpy valve amps - in fact if you want to get some serious bass out of them, then it seems that you just can't get enough power.

Anyway getting some of the nerdy listening out of the way early - we tried switching between the MF Nuvista and the Denon DVD. The Nuvista had been cold at the start of the evening, and the early demonstration for me put the Denon ahead in that it had a bit more get up and go, with the slightly soft-focus sound of the MF, being very different to my usual listening. Later on we tried again and the refinement, particularly in the mid-range of the MF started to show itself as being ahead of the Denon on some material. For me though, I'd probably still be happier with the Denon, being closer in presentation to my CDSII.

On to the vinyl and a quick comparison of some Herbie Hancock on both CD and LP12 showed the vinyl was the superior source on the night, certainly injecting more energy into the performance. It was about this time that a very pissed off Nick Lees finally arrived - you would think that Aston Villa would know not to announce controversial managerial announcements on a Riders evening. Anyway Tom decided to calm Nick down by playing one of the most raucous live King Crimson tracks you're likely to hear - Tom assured us that on his sistem it sounds pleasant and melodic - the conclusion was obvious (at least to us Hutter users), David's Mana must be destroying the tune.

On to the amplification……well we started the evening with David's homemade prototype power amps - David can provide further details on these. Knowing that Quads have a reputation for being a bit bass shy, I pulled out a Public Enemy track that certainly has lots going on in the bass department. Add a touch of extra volume, and it was at this point that David's prototype said it's goodbye for the evening…..and we hadn't even got to Rammstein.

Anyway, on came the Advantage M300 monoblocks - well we got therough the Public Enemy, although admittedly at lower volume. Personally I thought the Adantage amps were better than David's first attempt into Amp building - if I remember rightly Jason Hector was on version 7 power supplies when we were at this place, so I guess there's plenty more to come. Even with the M300 monoblocks, the Quads protection circuitry did play a part several times in the evening, particularly during the Rammstein, so I fully expect David to invite us back when he's made his first 1 kW version.

Well we did get round to some more 'refined' stuff - I decided to inflict some more Bartok on Dave J, who like last time went into state of shock (only matched by Tom's face later on when I remarked that maybe 'classic' Pink Floyd albums were not that good). As Nick and Dave J, disappeared out for a fag break, I will say that my highlight of the evening occurred. The Quads really showed their class, both in terms of the way they portrayed the orchestra, but also in the portrayal of voices which were just fluid and seamless, particularly in the latter better than on any other speakers I've heard (although I think Wilson Benesch ACT2s come close). It' was on material like this, Tom's Shostakovich and the Ravel, that the Quads really showed their class.

What about the downsides - I can certainly see why David has chosen to build his system around the Quads - they really do have some exceptional qualities. The problem is that if you want to get the dynamics and bass of other speakers you need amps with exceptional muscle. Even the powerful amps that David is currently using don't produce the bass and dynamics that I'm used to - maybe kW amps are the way to go. Also, going to these sort of amps does take you quite a long way from the Naim sound. For me I'd miss some of the PraT virtues of more flat earth set-ups, but I'd certainly like to get a bit more of the Quads qualities in my sistem.

So many thanks to David for the excellent hospitality -more to come when Nick supplies the track listing and the pictures of the evening.

David
Posted on: 23 May 2003 by garyi
Nick.

2 concerns, well 3 actually.

1. there is no way you could remember all them tunes without having wrote them down.

2. you have been taking pictures of the insides of peoples amps.

3. I am reading and replying at 9.00 pm on a friday night.

god help me Wink
Posted on: 23 May 2003 by Dave J
quote:
I am reading and replying at 9.00 pm on a friday night.

god help me


Gary, you think that's bad - it's now 9.45 I'm still in the office, still bloody working, missed going to the blues night at the Black Horse and am unlikely to get a sodding drink for at least another hour. To make matters worse I've just been told that my daughter is having a sleep over with 4 of her mates and they're occupying the listening room. Shite!
Posted on: 23 May 2003 by David C
Guys,
It was a pleasure. I think that the Quads have recovered from the abuse now!! The DIY amp is sounding somewhat happier now that I have given it a little more headroom in the power supply.
Hopefully my house move might give the quads the room that they deserve.
David
Posted on: 24 May 2003 by David Hobbs-Mallyon
......and I thought Tom was modelling as the fifth Teletubbie - Tipsy maybe.

David
Posted on: 24 May 2003 by garyi
Is the non shoe wearing thing essential to the listening experience?

Or more size comparisons!
Posted on: 24 May 2003 by Mike Sae
When you guys "do" Nick Lees, I'd like to see pics of his music collection.

TIA,

mike.
Posted on: 27 May 2003 by Dave J
Having worked through the Bank Holiday weekend, I decided to take today off to catch up on things and post my impressions of David's sistem.

Initially, many thanks for your hospitality, David. It was lucky that, for once, the rest of the Riders had important meetings/interviews/liaisons etc the following day so the evening ended at a reasonable hour. It also meant that only Tom (surprise, surprise) was able to "hit the sauce" so the dent on David's wine cellar was pretty modest.

I'd not heard Quad electrostatics for a while so it took a little time to become reacquainted with their very particular style and delivery. It really is quite odd how you can stand behind them and get almost the same presentation that you get from being in front of them. They don't have too much grunt but, boy, do they ever need some current! It makes you wonder how Quad amps manage to drive them because, as David said, his ancient 250 is not up to the job and he's still on the look out for the ideal amp to partner them. A kilowatt beastie appears to be a possibility.

I got the impression, though, that simply aiming for ever more watts is not necessarily the answer perhaps not allowing the best from what is a terrific turntable. I'd heard a similar LP12/ Aro/ Dynavector/ Mana set up at Jonathan Ribbee's a while ago and his was producing a more impressive performance despite the absence of an Armageddon. David's turntable is capable of a lot more and I think it'll take a rethink on the amp and pre-amp front to release the full potential.

The Denon v. NuVista was also an interesting comparison with the latter improving notably as the evening wore on but still being outclassed by the much more modest Denon DVD machine. I'd demo'd a NuVista at the time I was looking to replace my Karik, largely on the basis of all the hype surrounding them at the time. It wasn't the one for me and I still think I made the right decision.

David's route to where he is now is rather different to many of us. I can certainly understand the appeal of the Quads, particularly given the type of music he's into but I don't know if they would be right for much of what makes up my musical diet. It would certainly be interesting to hear them again once David has found his perfect amp.

Dave
Posted on: 27 May 2003 by Mekon
[edit]nothing to see here
Posted on: 27 May 2003 by Andrew L. Weekes
quote:
While we're at at it I'd like to point out that although we are hearing quite a few big money systems we've yet to hear a small but exciting one


Your time will come Tom, as soon as the neighbours are on holiday!

Beer and sandwiches OK Wink

You'll all be held liable for any IBL destruction though - the electronics I have great confidence in!

Andy.
Posted on: 28 May 2003 by Dave J
quote:
Beer and sandwiches OK


Sounds fine to me, Andy, it's Tom we have to worry about. We discovered that he comes with a government health warning: "Consumption of alcohol is the leading cause of inexplicable rug burns on the forehead".

Dave
Posted on: 28 May 2003 by David C
David / Tom,
I agree about the lp12, it is sounding somewhat dead at the moment. I am planning on getting it serviced once I have moved house. I have had to try and make the room more visitor friendly in the hope of selling the flat which has meant moving stuff (including the lp12) around a bit. I am not convinced that it is anything like its best at the moment.
The pre-amp is quite fantastic, I am just not at all convinced by any power amp that I have heard. Alex's DV produced one of the best sounds with the quads as does dare I say it, the entry model Krell kit (not the huge radiator stuff)
I have done quite a lot more work on the amp that you guys saw and made some quite significant improvements to the sound quality, I have also raised the ceiling on the overload circuits. I don't know how you drive quads, I have heard a pair play louder than mine were playing the other night in a larger room, but that was using krell amplification.
The interesting thing to note is that when we were playing cd the whole system had cost me less than a CDSII, so whilst the performance may not quite be there and I would agree certainly not for the Rammstein it is pretty cool for classical jazz and acoustic which makes up most of my audio diet.
Andy, you had better get your neighbours ear protectors now!
David
Posted on: 30 May 2003 by Dave J
quote:
(I've just read this is called Cobbler's pose and is good for bladder control and pregnancy.)



So thath's you sorted on both counts, Tom.
Posted on: 30 May 2003 by bjorne
[QUOTE

http://www.bryston.ca/14bsstcov.html

It is probably just as sonically capable, and probably more so, than all these Krell mega-amps[/QUOTE]. How do you know, have you listened and compared?
Posted on: 30 May 2003 by David C
John,
The Krell I looked at was the KAV 2250 which I think is not much more than a 4bsst which I have heard. As to whether it works with a naim pre-amp frankly I don't really care as the only naim pre-amps I like are the 552 252 and 52 I replaced a 52 with my current pre which for my tastes in music is a much more harmonious match. I could not bring myself to pay the price of the 552. I love teh 552 500 combo, but for that price I could get a fairly nice classic sports car in addition to a hifi that makes me happy today.
My big challenge will come when I eventually move house... I will either have to say goodbye to the quads if they don't fit in or say hello to some new amps and possibly a pair of active subs (or gradient's and even more amps!)
At the moment I am more interested in getting my lp12 back on form again.
Regards
David
Posted on: 30 May 2003 by Paul Ranson
I don't believe more power is required.

Quad specify a maximum peak input voltage for undistorted output of 40v. Which is near as damnit the maximum peak output voltage of a NAP250/135.

More volts will simply trigger the protection more often. When you trigger the protection the speaker shorts its input and triggers the amps protection. Amp turns off etc etc.

ISTM that you simply have to operate these speakers within their limits. Which shouldn't really be a problem except for metalhedz...

Paul
Posted on: 30 May 2003 by Richard Dane
quote:
Originally posted by Paul Ranson:
I don't believe more power is required.

Quad specify a maximum peak input voltage for undistorted output of 40v. Which is near as damnit the maximum peak output voltage of a NAP250/135.

More volts will simply trigger the protection more often. When you trigger the protection the speaker shorts its input and triggers the amps protection. Amp turns off etc etc.

ISTM that you simply have to operate these speakers within their limits. Which shouldn't really be a problem except for metalhedz...

Paul


Well observed. We actually recommend a small mod to the NAP250/135 for Quad users which lowers the voltage slightly to 36V. This helps a great deal in preventing stator burn-out if you listen at high-ish volumes. Having said that, if you're reasonably sensible with the volume then even an unmodded NAP250/135 works just fine.

I have a feeling the new NAP 250 may be a superb match with Quads. Unfortunately I won't be able to find out until I can get some decent stands made up for my old pair of ESLs...

Richard

[This message was edited by Richard Dane on FRIDAY 30 May 2003 at 16:39.]
Posted on: 30 May 2003 by David C
Richard,
you would be very welcome to bring one of the latest 250's round to my place next time you are in london and have a listen, I have a 32.5 and a very old but serviced 250, it would be very interesting to hear one of the latest against one of the first ever made.
The 988's are quite a different load from some of the older units. The impedance curve is annoying to say the least. Current is more of an issue than volts. I think that on the newer units the 135 is fine without any modification in terms of output voltage. The problem is that the impedance drops to such a level that the amps protection circuitry thinks that it has been short circuited.
Regards
David
Posted on: 30 May 2003 by David C
John,
I am 'over here too' then agin in your neck of the woods there are not many hifi shops full stop.
The 4b-sst is fantastic it is a very nice amp, I heard it driving a pair of AVI Pro 9 plus monitors fronted by a cdx. Very enjoyable. not at all the sound I would have expected from such a small speaker either.
For their price the Bryston amps are fantastic. There are a lot of very nice family sounds around, Bryston, Naim, some Linn, Dynavector, certainly Tom Evans stuff. They are all a compromise to a certain extent or another the challenge being to find the one that most suits your listening tastes and pocket. I don't particulary want to be seen as another person naim bashing. I love certain bits of naim stuff, however I could not live with a full naim system all day every day as my main system. I think that my moods and musical tastes are like several people on this forum who have a couple of systems depending on what they want to play and what mood they are in.
My current aim is finding a room with decent acoustics, that would make more of a difference on my current system than any box upgrade could ever aspire to.
David
Posted on: 30 May 2003 by Richard Dane
David,

yes, the protection circuitry can chip in a bit early on the old NAP 250 and NAP 135s.

The new NAP 250 uses a completely different type of protection circuit which will allow the amp to briefly drive a short circuit (according to Roy). Needless to say, don't try this at home, children....!

This is one of the reasons I feel the new NAP250 may be a really good match with Quads...

Richard
Posted on: 30 May 2003 by David C
Richard,
You should borrow a 500 and try them with that, it is beautiful... You might have to try tempting me further with the 250 :-) Do you think the new 250 would do a better job than the 300?
David
Posted on: 30 May 2003 by Richard Dane
David,

I would imagine a NAP 300 would do the job even better than the new NAP 250. I only mentioned the new NAP 250 because it's a more direct comparison with the old NAP250/135s.

Richard
Posted on: 30 May 2003 by bjorne
quote:
Originally posted by J. A. Toon:
quote:
How do you know, have you listened and compared?


I don't -- that's why I used the word "probably". The reviews I've read where they've compared the high-end Bryston amps with the much more expensive Krell amps have all been pretty favourable.

I know most people here don't rate Stereophile much as Hifi magazine, but they thought the 14-BSST was of sufficient quality to get their top "A" class rating. Given that Stereophile, in general, love Krell equipment, I would take that as a good sign, in these terms.

Hope that answers your question.




Actually it doesn't. In what magazines have you read these reviews where they compare Bryston vs. Krell? I regularly read english, american , german and scandinavian mags ( at the library Wink) and I don't think I have seen any reviews of Krell vs. Bryston.

As for Stereophile: the reviewer who rated the Bryston "A", well he is a Brystonowner and regularly gives them good reviews. And frankly an "A" rating in that mag isn't worth much. All, at least almost all, expensive amps receive that.

Don't get me wrong, I have never heard a Bryston amp. I know they are wellrated and generally considered good value for money, but I doubt it is "as sonically capable, and probably more so, than all these Krell mega-amps" as you say. I have heard Krell many times and would say that they can be extremely impressive. Maybe you should try to borrow one and check it out in your sistem..
Wink
Posted on: 30 May 2003 by herm
Correct me if I'm wrong, but I always thought the idea of this forum is we talk about the stuff we have actually heard (and preferably heard for some time), rather than go by the magazines.

What's the use of quoting a magazine, when we can read the magazine ourselves? That is, if we want to, because there's considerable scepticism about magazine reviews and what they're worth.

Herman