WIT-280111
Isny model shoulder rest by Wittner. It is designed to work together with the Wittner chin rests and also works without one.
| Model | Isny |
| Material | Hi-Tec composite |
| Country of manufacture | Germany |
The violin is clamped between shoulder and chin and held almost entirely by this clamping; the left hand gives only slight support. The shoulder rest forms the lower abutment of this clamp on the shoulder.
By lifting the vibrating back away from the body, the rest keeps its radiation backwards and downwards free of damping by the body. Its feet grip the edge of the lower bout; each of these small points of contact acts on the vibration of the back only locally (damping, that is, drawing energy from the vibration), and the more strongly the back vibrates at exactly that spot, the greater the effect.
At the edge the top and back overhang the ribs by around 3 mm, and the back is worked thicker there, around 3.3 mm, than in the adjoining area at 2.5 to 2.8 mm. The width of the rest is governed by the width of the lower bout, and on a 4/4 violin also by a rib height of 30 mm.
Violas are sized by body length in centimetres or inches; adult sizes range from 15.5 to 17 inches.
The dimensions a shoulder rest engages with grow with the body length.
The construction principle of back, ribs and lower bout is the same as on the violin, in larger dimensions. A viola rest therefore needs a wider span than a rest for the violin, and its feet grip taller ribs.
The Isny is made of a high-tech plastic and contains no wood. Wittner describes it as ultra light, anatomically shaped, very flexible in adapting to the shoulder and dismantling into very small parts.
It is designed to work with Wittner chin rests and can also be used without a chin rest. For chin rests with barrel fittings, including other makes, there is a separate version. The range covers violin 4/4 to 3/4 and 1/2 to 1/4 as well as viola.
Players who prefer to play without a shoulder rest and want more hold at the chin are better served by a taller chin rest, on the 4/4 violin for example the Morawetz High with its 25 mm cup height.
The rest lifts the vibrating back away from the body and touches the instrument only with its feet at the edge of the lower bout. Each of these points of contact has a local damping effect, the stronger the more the back vibrates at exactly that spot.
The lower bout of a 3/4 violin is around 195 mm wide. The rest is set so that both feet grip the rib securely at the edge of the lower bout.
What counts are the lower bout width and rib height of your own instrument; on a viola with a 42 cm body they are 244 mm and 39 mm. If in doubt, measure the lower bout across at its widest point.
Violas are built wider and have taller ribs than violins, so the rest needs a wider span.
The Isny is designed for Wittner chin rests and can also be used without a chin rest; for chin rests with barrel fittings, including other makes, there is the WIT-282211 version.
A high-tech plastic without wood; we do not have a material data sheet.