[rhysonsax]

I recently bought a low A bass sax that is based on the Keilwerth: http://www.shwoodwind.co.uk/Reviews/Saxes/Bari/Keilwerth_SX90_special_bass.htm

You can see from the picture of my bass on Steve Howard's website that it actually has three strap rings, one each at the top and bottom bow as well as the usual one between the hands. The maker intended the top and bottom rings to be used with a guitar strap device, but it makes the horn too horizontal for me.

I don't know whether it is the extra tubing for low A, but the (middle) strap ring feels like it is too high up the horn to get the sax to hang comfortably. The ring may have been positioned for good balance, but it's difficult to make the mouthpiece appear at the right position for comfortable blowing. I've tried all sorts of straps and harnesses, including a "FreeAction" harness with rigid rods in the front.

Can you tell me where the strap ring is on your bass, especially if it's a Keilwerth ?

My strap ring is:

• Opposite the G# tonehole
• 6 inches (15cm) below the left thumbrest
• 12 inches (30cm) above the right thumbhook
• 3 inches (8cm) below the lowest bow of the crook

Rhys

 

[rhysonsax]

Thanks hornguy. When you've done the tweaking it would be really interesting to hear some measurements and to see some photos.

How upright or horizontal does the sax hang and is how is the mouthpiece positioned relative to your face ?

All the best

Rhys

PS I'm very reluctant to move any of the strap rings on my horn since it is unique and in such great condition.

 

[rhysonsax]

Nice sax, but even nicer jacket ! That's just what we need to cheer us up this summer.

The picture does show the strap ring clearly and I'm guessing that it's a little lower down the body of the horn than on my Keilwerth. Could you measure the distance it is below the left thumbrest and above the right thumb hook ?

If you're in Eastleigh than that's only about twenty-five miles away from me. I wonder if you know Steve Howard and/or Pete Thomas.

Thanks

Rhys

PS I will have to see whether I can remove the link strap from my harness.

 

[rhysonsax]

Thanks for the measurements. That means that the strap ring on your Keilwerth is about 2.5 inches lower down the horn than on mine. That probably explains why I can't get any sort of strap to hold my instrument comfortably. I presume the maker adjusted the strap ring position to make the horn balance better after adding all the extra tubing for the low A.

On Steve Howard's review of my horn, he says:

As mentioned earlier, there are a few extra keys on this bass that aren't fitted to the standard production model. Most notable ( apart from the low A and top F# ) is the addition of a mid D vent ( the topmost central cup in the photo above right ). This key was added by the builder at a later date - presumably as part of the ongoing research and development project.
The vent sits near the top bow...so the linkage that connects it to the low D key has to run the entire length of the body - and is split into two keys.
Mid D has always been problematical on basses - and most players of older basses either get used to it or develop 'false fingerings' that help improve the clarity of the note - so an automatic mechanism that cleans up this tricky note is a welcome addition.
Thing is, whilst it works it does so in a slightly kludgy manner.
Vent keys, as the name suggests, tend not to need to open as far as normal keys. In some cases the merest crack in the seal of the pad is enough to allow the vent to do its job. In this case I found the vent key needed to open about three millimetres...and that's a huge difference to the three or four centimetres that the D key has to travel - and so there's lost motion that has to be taken up by the vent linkage. It does this in a very crude way; the actuating lever hangs above the D key foot ( seen on the right ) and only comes into play just before the D key pad hits the tone hole. This makes the D action feel clunky.
If you adjust the linkage so that it always remains in contact with the D key, the feel improves considerably - but the vent cup opens about a centimetre...and as it remains open when you play an Eb it almost completely kills the note.
There's not much that can be done about it. Ideally yet another link is needed from the Eb touchpiece to close the vent key - but this would be horribly complex. A better bet would be to fit a foot to the vent key that limits how far it can open ( it could be made adjustable too, to allow the player to fine tune the tone - the existing link does have some degree of adjustment, but it's rudimentary at best ) - which would allow the link mech to remain in contact with the D foot. There'd still be some double action, but this design would shift it to the top of the action rather than leave it on the D key, where it hampers the feel.

I don't think that all the mechanical complication and extra venting keys actually solves the middle D sounding problem on my horn.

Perhaps the middle D is best played with the D palm key and no ocatve key. Maybe you will have to close/open some other keys to get the note best in tune.

All the best

Rhys