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Keilwerth SX90R alto review header
 

Keilwerth SX90R alto saxophone ( Edition 75, or Anniversary )
Origin: Germany
Guide price : This variant no longer manufactured, current versions around £3000 new
Date of manufacture: 2000
Date reviewed : Feb. 05 ( Addendums added, see below )

Note: This extended review covers several variants of the SX90R series

Description : A professional quality instrument with many unusual features - including tone hole rings that mimic the rolled tone holes found on some vintage horns. Built to commemorate Keilwerth's 75th anniversary in manufacturing.

Keilwerth SX90R Anniversary alto saxophoneAt around the turn of the 1970s the saxophone market was dominated by the 'Big 3' - Selmer, Yamaha and Yanagisawa.

Any other manufacturers active at that time were considered to be in the background - and perhaps the largest of these were Keilwerth. They'd been turning saxes out for a number of years, but it wasn't until they produced the SX series of horns that they finally stepped into the limelight. Such was their impact that the Big 3 are now known as the Big 4.
That's quite an achievement - so let's see if they're up to the competition...

There are two things about this horn that strike you the moment you clap eyes on it.
The wooden key pearls and the wide bell flare.

These features, particularly the wide bell, give this horn a very unique and distinctive look. Couple that with a body finished in anodised black nickel and silver plate, and you have a horn that really ought to be able to put its money where its mouth is.

It gets off to a good start with the build quality.
There's a definite air of precision about the construction, and the angular pillars lend the horn a clean-cut image, though perhaps less so than on the tenors.
I'm inclined to feel that the pillar bases are just a touch on the small side - though the flipside to that argument is that it's better to have a pillar pop off in the event of a drop than have it hang on and stove in the body.

SX90R alto bell braceThere's a very substantial and stylish bell brace fitted, and it's comforting to see that the body mounts are suitably beefy too. As usual, the brace is detachable (which is a useful feature for repairers).
The key guards are pretty much standard - though perhaps tad on the thin side, but well fitted with substantial mounts.
A removable bell completes the body.

The action is as well made as the body and just as well finished.
The gizmo that aids the opening of the G# key cup (see tenor review for more details) tends to make the horn look a little untidy though, but at least it works after a fashion. You'll probably need it too - horn with rimmed or rolled tone holes tend to suffer somewhat from sticking pads.
SX90R alto palm keysA nice touch is the adjustable palm key touchpieces.
I can't say that it's a particularly elegant solution, and I feel that the touchpiece stems are perhaps a little too weedy (though I've not yet heard of anyone who's broke one) but it's a system that works.
It should allow you to play about with the height and rotation of the touchpieces until you're completely happy.
Mind you, sometimes you can have too much choice - and I'm pretty sure that some people will end up adjusting the touchpieces for ever more in an effort to find the best position for them.

SX90R alto spatula clusterMore thought again has gone into the bell key spatulas, and I particularly like the very sturdy pin and socket arrangement for the low Bb to C# link. It's simple, neat and reliable - and it just plain works. It's a big improvement on the standard design used by almost every other manufacturer, which uses a closed box.
The positioning is good too, with all the keys falling nicely under the fingers. I can't quite say the same for the low C, which I find a little too far back - but then that's the sort of thing you can become accustomed to.

The rest of the action is very well laid out. Keilwerth have been quite daring in places with regard to key design, and whilst it sometimes looks a little odd it does actually work. The Auto or front F key, for example - looks very different from the norm, and feels different too - until you realise just how well it works when you roll your forefinger knuckle up to activate it.
I'm pleased to see a simple prong and fork arrangement used for the side Bb and C keys, as opposed to some fancy gubbins that wears badly and ends up rattling.
The whole lot is powered by blued steel springs, and proper point screws have been used throughout. A reassuringly large adjustable thumb hook tops the whole lot off.

So far, so good - but what about the niggles?
Well, I'm not that impressed with the key pearls. Rather than going for the traditional ( and neat ) cupped type, these pearls look to be simply stuck onto a plate atop the key cup. It doesn't look particularly attractive - and it makes the action feel wider under the fingers. There's only about 3 or 4 millimetres in it, but in terms of feel that can be quite significant.
From a strictly personal point of view, aesthetically speaking, I don't think the wooden pearls work. Maybe if they'd been made in Ebony they'd look a bit more 'integrated' - but my impression is that it looks a bit amateurish.

The case is of the semi-soft variety - which is fine enough, and it's certainly up to the grade, but it closes with a zipper...and in my experience zips have a nasty habit of breaking. Having said that, it appears that the case cover is removable - so fitting a replacement zip might be an option.

But all of this pales into insignificance beyond this point...

If you've read my review of the SX90R tenor you'll know that there's an issue with the tone holes on these saxophones.
If you're not familiar with the article then I'd recommend you have a look at it when you've finished here, and also the accompanying article on warped tone holes - but to summarise briefly every SX90R that I've seen has had at least one warped tone hole.

This particular saxophone fared better than most, but still featured a very significant warp on the low C.

SX90R Anniversary alto low C

Here's the tone hole, with a ground level die sitting atop of it. The two red lines on the right indicate the surface of the die ( this would be the leather of the pad ) and rim of the tone hole. Ideally they should meet - as they do in the dead centre of the tone hole. This would provide the perfect environment for a decent seal as the pad is brought down over the tone hole.
The two red lines show the maximum gap at the apex of the warp. Bear in mind that a test for leaking pads is to slip a cigarette paper between the tone hole rim and the pad - if the pad seats it will grip the paper. If it grips only lightly then you have a small leak, but still one large enough to affect the note. If it grips even less, or perhaps not at all, then you have a significant leak. Now consider that the thickness of a cigarette paper is less than that of one of the red lines.
The gap isn't confined to a single point either - it's an arc, and in this case I would estimate that about one fifth of the tone hole would leak against a flat pad.
Now look to the left of the tone hole and you can see a similar but smaller gap.

It's true that the flexibility of the pad will take up some of the discrepancy - but by no means all of it, and only for as long as the pad remains flexible. Pads harden with age, and they're inclined to move somewhat depending on how wet or dry they are.
In short, it all adds up to a problem with reliability in the long term.

The horn is a lively player, plenty of cut and precision. Given the wide bell rim and the slightly retro look I was half expecting it to err on the warm side tone-wise, but it's actually quite a bright horn.
It gets a tad too bright on the top C - I noticed this note jumping out on me in fast passages.
I'd put the tone as being 'middling' - which would make it quite a versatile horn with an appropriate choice of mouthpiece.
The tuning is spot on, I noticed no problems at all.

I began to notice the feel of the thick pearls under my fingers. Rather than sitting more or less on the pearls, their height forced my fingers to rest on the front edge. It got uncomfortable after a while, and I'm none too sure that this is something that an experienced player would get used to. It's not an insurmountable problem - just replace the pearls with something thinner...or simply have them filed down a little. You could even file them at an angle!
Similarly, I found myself tripping up around the low C/Eb keys - but again that's likely to be a problem only for an experienced player who's used to a different horn.

The tone hole problem made itself known. The low notes on this horn are very good...not overly fat, but crisp and precise - but in order to get the full range of tone and expression out of them you really do have to power down the keys.
I've seen this time and again with this model - clients will happily show me that they can blow right down to the bottom end, and they will...but it's at the expense of finger pressure.
After 30 odd years of playing, my fingers are pretty much 'set' at a standard pressure when I pick a horn up. I know what to expect, and if I don't get it then it's usually the first sign of a leak. If you place this horn next to any other similarly specified horn and then play the low notes with the absolute minimum of finger pressure you'll see precisely what the problem is.
This is essentially how a horn should work: your fingers should need only sufficient power to overcome the spring tension...plus a little bit extra for good luck. Any more than that is completely unnecessary - and it gets tiring eventually.
The Keilwerth will give you about 80% of the low note tone with a light touch - but when you force the pads home against the warped tone hole you get the full 100%...and it's nice...but you really shouldn't have to work for it at this price level.

I expect this review will generate about the same level of ill-feeling as the tenor one did - my mailbox played host to a number of emails from disgruntled SX90R owners.
Such grumbles are sadly misdirected though. All you see here is what I see when a horn hits the workbench. I agree that it's possible to debate the comments on tone and suchlike, but that'll always be the case - and they're presented strictly as personal impressions and a rough guide as to what you might reasonably expect a horn to do. What's not open to debate is the physical structure of a horn - what you see is what you get, and if you have any misgivings about it you should be talking to the manufacturer.
In effect that's what these reviews do ( at least in terms of instruments still in production ) - they serve as a consumer guide, and maybe, just maybe, manufacturers will think twice before saying "Aw, that'll do" before turning out instruments with mechanical defects.

The fact of the matter though is that the SX90R is a good horn - but it's tragically let down by the tone hole problem.
And it really is a tragedy. Given the build quality, the unusual but effective keywork, the impressive finishes available and the tonal versatility of these horns I feel it has the potential to be horn that could easily cope with a huge range of styles - from hard R 'n B to frenetic Be-Bop...right through to out and out classical - but until the tone holes are sorted out I simply can't recommend this horn. The plain SX90 should be a better bet - same horn, but without the tone hole rings.

Addendum 04/11/05:

I am cautiously delighted to announce the very first SX90R series horn I've seen that has level tone holes ( serial number 119xxx ). I say cautiously because I sincerely hope that it marks an end to the disgraceful build quality issues I've seen in the previous models I've reviewed, and yet I feel entirely justified in wondering whether this particular example was an anomaly. Only time will tell, but for the present I'm pleased to be able to make good on my promise to announce to the world in general that I have seen an SX90R series horn that meets my expectations.

SX90R nickel silver altoThis sax dates from around 2003, and has a solid nickel silver body. The finish is matt, or brushed, and coated with clear lacquer, and the horn comes in at priced of around the £2600 mark.
On close inspection it looks a bit 'industrial', but I feel this is more a property of nickel silver. It has the same construction as a brass horn, it's just that the colour of nickel silver accentuates solder and seam marks. This is probably a good reason for going with the brushed finish rather than a high polish.

As regards general build quality the comments for the Anniversary horn above apply. It was interesting to note that the client who brought this horn in for a setup echoed my comments about the thickness of the key pearls ( this horn has proper Mother of Pearl ones ) and the positioning of the low C/Eb keys. I also had to adjust the positioning of the bell key spatulas which were felt to be a little on the low side. No big deal, and barely five minutes of careful work to shift the touchpieces up a few millimetres.

I wasn't that impressed with the pad seating, or rather the cup angles. Every single cup on the right hand stack leaked at the front, which indicates that the pads are too thick for the given cup angle. I always make allowances for horns that have been out 'in the field' for any length of time, but this is an issue that would have been built in ( a correctly set pad that shifts or contracts over time typically results in leaks at the rear of the cup ).
On previous examples of this model this would have been a veritable nightmare to put right - but with flat tone holes it was a simple matter of adjusting the cup angles and resetting the pads.

The horn blew very well, as expected. Tonewise I'd say it was rather warm, and I noted that in the lower register, particularly at the lower end, the horn was almost tenor-like in its response. This is quite a remarkable achievement. I guess you could argue that an alto should play and sound like an alto, but there will be plenty of players out there who will love the extra breadth of tone in the lower end.
And it comes at no cost to the upper register either, which was clear and punchy, though with perhaps less cut and edge than a typical alto. But then this is not a typical horn.
Even better was the fact that the tone blended nicely right across the range, so that the fat, round lower notes eased nicely into the brighter top notes without a sense of their being a 'step'. It put me very much in mind of Paul Desmond, with an easy, relaxed and tuneful tone. It might not appeal to players who like to drive their horns, but there are plenty of other horns out there which cater for those who prefer more of an edge to their sound.
It was certainly a joy to be able to subtone those fat lower notes without having to up my finger pressure!

I noted a bottle of 'pad powder' in the client's case - so the issue of sticking pads with wide tone hole rims is an ongoing issue. Being able to dismantle the horn in front of the client and showing him the residual crud that the powder leaves soon put him right as to the merits of using a degreasant to address the problem.

And so, at last, I feel I can place this SX90R alongside the competition.
I shall continue to monitor the tone hole issue as and when examples arrive on the workbench, and I hope that never again have to draw attention to shoddy build or poor quality control.
I'm not quite at the point where I'm ready to recommend the SX90R range wholeheartedly...I would like to see more evidence that the problem is finally sorted - but I'll say this much: If, and it's an important if, the problems that plagued earlier models are now resolved, Keilwerth have an excellent horn that's worthy of consideration against some strong competition.
If you're in the market for a horn that hearkens back to the darker, deeper tones of the vintage era ( but without the accompanying action and tuning issues ), this is your baby!
Keep in mind the setup issues ( which, to be fair, are not unknown on other similarly priced horns ), and definitely watch out for any repetition of the tone hole problem.

Addendum 09/01/07:

SX90R N alto 121xxxIt seems I spoke too soon.

Another nickel bodied alto arrived in the workshop recently - this one bearing a 121xxx serial number, which dates it as a late 2004 build.

This horn came in via my offer to inspect any SX90R horn, and despite an initial visual inspection that looked hopeful, the test gauge revealed a couple of flawed tone hole.
This horns suffered from a warp on the low C and the low Eb - of which the low C is shown below:

SX90R N alto 121xxx low C

You can quite clearly see the warp which leaves a gap at the sides of the tone hole.
The low Eb had a warp only on one side ( nearest the bell to body joint ).

An initial play-test at normal volume didn't show up a particular problem - low Bb was easily achievable, but the same test at subtone showed a sharp drop-off in tone from D downwards.
It was possible to demonstrate to the client the effect the warps had by fitting corks to wedge these keys shut and show the marked improvement in tone. The same test was repeated with the client pressing down on the Eb key cup and noting the change in tone with each press and release.

Fortunately I was able to correct the anomalies, and this brought about much improved stability for the lower notes.
As regards blowing in general, this is the same model as the alto reviewed directly above - and despite a gap of just over a year since I last played this particular model I felt that the comments regarding the tone still apply, with the horn leaning towards a rich but warm tone.

I am saddened that the problems I've been highlighting for some years still exist at least as far as horns built just prior to 2005 - and it would seem that the horn reviewed above was just a lucky break.
I took some time to discuss with the client his reasons for buying this horn, the results of which can be read here:

Addendum 08/02/11:

Keilwerth SX90R Shadow alto saxIt's been just over four years since I last had an SX90R alto on the bench.
That's quite a gap for such a well-known horn, but then I probably see twice and many professional tenors than I do altos and the SX90R altos don't seem to be anywhere near as popular as the tenors.
So it was a welcome visitor to the workshop - brought in by a client who wanted to take me up on my 'examine and oil' offer.
This particular model is a Shadow, and a serial number in the 125xxx range plus anecdotal comments from the owner place its year of build in around 2009/10.
It's quite an attractive model - the black nickel finish coupled with the silverplated keys complement each other and lend the horn a very elegant, almost art-deco look.
The horn has had at least a year's worth of hard playing and has stood up well to the punishment. I had to replace a missing felt under the A key and reset a slightly poorly seated low Bb pad - but that's about it.
If you look closely at the top stack you might just notice that one of the key pearls is missing (on the A touchpiece). The player didn't seem to mind, and commented that the loss of the rather thick pearl meant that his fingers sat better and more aligned on the stack.
I agreed - I'm not a fan of these thick pearls, all they do for me is make the horn feel much bigger under the fingers.

I set to inspecting the tone holes, and I'm delighted to report that I found no warps at all. This, coupled with the inspection of the client's Shadow tenor - which only showed up a minor fault - indicates that perhaps more care has been taken in recent years to address the problem. About time too (though at the time of writing it's uncertain as to whether Keilwerth has a future).

Tonewise this alto displayed all the crispness and depth that make the SX90R what it is.
The tone is punchy without being brash - the rich low notes give way to the brighter upper register quite seamlessly and without resorting to harshness to gain extra cut.
Of all the SX90R altos I've played I felt this model leaned more to the contemporary than the others - but without losing that distinctive nod to the warmth and depth of vintage horns. This, coupled with a very free-blowing feel, makes this alto a very versatile instrument indeed.
I still struggled a little with the ergonomics, but that's largely down to the key pearls - if this was my alto I'd have those babies off in a flash and replaced with something thinner...which would go some way to addressing that slight sense of disconnection these horns give me.

All-in-all a very impressive example of what Keilwerth can do when they try - and if you can find one of these that's as well-built as this particular model, you're in for a treat.

Addendum 20/11/11:

SX90R alto 114xxx low CThis low C tone hole is from an SX90R alto in the 114xxx serial number range, and according to the owner it was bought new in or around 2002.
It's quite a severe warp, which left the pad trying to make a seat on about on third of the circumference of the tone hole rim - the peak contact points being roughly in line with the centre of the middle key guard stay.
Also noted were slight warps to the low B and Bb tone holes.
I did some remedial work to the low C tone hole, and managed to improve it a great deal - but it was still by no means perfect...but at least it gave the client more than half a chance of making the note.
Rather interestingly, the horn had recently been repadded with roo skin pads in an effort to deal with the stickiness that had plagued the original pads. There was still some slight evidence of stickiness, but nowhere near as much as there was before - a point easily proven due to one original pad having been left on (side F#). The owner had tried a number of techniques to combat this problem, from lighter fluid and various pad powders through to using fine carborundum paper on the tone hole rims.

 

If you own a Keilwerth SX90R series horn and are concerned or curious as to whether your horn suffers from warped tone holes, you are invited to bring it along to the workshop for a free inspection. In the course of the inspection I shall examine and test the instrument and take photographs as necessary, whereafter they will be added to the rolling reviews ( good or bad! ).
There will be no charge for this, and in return for your time I will carry out a setup and lubrication job on your sax free of charge.

 

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