Bass Recorder Styles.There is information on the double hole for IV
found on some German recorders
at the bottom of this page.
The traditional bass recorder is straight and sounded by blowing through a pipe. This is the Aulos 533B, current model (in 2019 and for at least ten years earlier).
The 'knick' style head is a relatively new (mid C20) style. This one is branded 'Dolmetsch Nova'.
This rare item does not, I think, fit Aulos basses with a top entry pipe.
The top of pipe blown bases is removeable and Aulos produce an alternative 'direct blow' cap.
I would be very grateful if anyone could provide a really accurate measurement (to 1/10 mm.) of the diameter of the joint between the head of an Aulos 533B bass and its top entry cap. Please email me.
This old model Aulos 533 bass head (and its predesessors) has the pipe entering from the side. This style is now much less common than it was. While the pipe must be easier to produce, the cap, whether of plastic or wood, is more difficult to make.
I would be very grateful if anyone could provide a really accurate measurement (to 1/10 mm.) of the diameter of the joint between the head of an old model Aulos 533 bass and its side entry cap. Please email me.
If you are an adult, and need to play a bass lacking a side entry pipe, a short straight one will do. You could even use part of an old felt tipped pen!
Very good capless direct blown basses were made by Roessler. A pipe was never an option. The head is shaped for direct blowing.
Here is an unusual, and over complicated, pipe for a Moeck 'Tuju' bass recorder. It is for side entry, the 'U' bend is a water trap, and the cross piece is for strength, only. (The tubing is very thin.)
Replacement pipes for the Moeck 'Tuju' model bass are no longer available. I made this one from plumbing fittings. The beak is original.
The Aulos beak is available as a spare. A liner of synthetic cork solves all fitting problems. The latest production includes a resilient insert that makes the fit less critical and ensures a complete airtight seal to a nominal 12mm pipe.
The Aulos beak is an ideal replacement for lost or broken beaks.
This old German pipe has a conventional drain key.
Pipes vary in length. Longer ones are needed for small players (children). The two illustrated here are roughly 14cm. and 21.5cm. long.
This old, German, cap still has its 12mm. sleeve for the pipe.
This is a top fitting pipe from Mollenhauer, for their 'Denner' bass recorder. All the bends are in the same plane and it lies flat. Some (Aulos, for example) have a twist in the 'U' bend that offsets the beak from the line of the recorder. This goes some way to unblocking the player's view of the music (and, perhaps, the conductor). Look closely at the first image on this page.
Click the image for a pdf showing how I effected a good looking conversion of a side entry Aulos cap to top entry.
Never try to bend a bass pipe without specialist tools.
The Double Hole Key for Hole IV.|
This is a feature of older German made Bass Recorders.
There are quite a lot of these recorders about but I have only just found one in good enough condition to work out how to make best use of this feature. The bass is an old 'Dulcia' model from Roessler and was probably made in the 1970's. I suspect that these fingerings may also work for 'German' fingered instruments.
|These are all good strong notes and the fingerings are also useful for trills. Their use is not obligatory and treating the hole in the key as a standard hole gives satisfactory results, though with the usual weak forked fingerings.|