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piano accordions with helikon bass convertor

  • Thread starter Thread starter Deleted member 48
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If they make it, there must be a market demanding for it: piano accordions having a switch/convertor mechanism to choose between different bass reed sets for extra deep bass tuba sounds.

Steirisch Harmonika Helikon basses with a very deep sound are available in PAs.
Some brands make these. They are quite popular accordion models in Austria and Germany.

This Mengacini has some deep bass sounds in it:

MENGALPIV96 - Mengascini Alpine IV Helikon Converter LMMM 96
25lbs


ALPENFLAIR - Das Akkordeon mit dem Klang einer Steirischen
 
While the Helikon basses have a "deep" sound they do not have a "lower" sound than normal basses. The difference is that normal accordion basses always combine the lowest sound with one or more reeds that are one or two octaves higher, even in the base notes. If you had a switch to just play the lowest reeds alone (and I added this to a Bugari standard-bass accordion) you would hear that the basses go just as low, albeit without that tuba-like timbre.
So this type of helikon bass convertor must have the ability to switch off some of these medium reeds that always play along with standard basses. In its normal bass setting you still hear the helikon timbre playing along.
Nice instruments for those who love this sound yet want to play PA.
 
There are also Helikon bass accordions with 2-voice octave tuning system in the bass, having one low bass reeds set + coupled with an octave higher. The double helicon bass, Doppelhelikon.

http://www.stringsandboxes.de/Harmonika-Ersatzteile
Was sind Helikonbässe?
Der Begriff Helikon-Bässe steht für die tiefen und kraftvollen gestimmten Bass-Stimmplatten.
Helikon-Bassstimmplatten sind in Ihrer Mensur größer als Stimmplatten bei Akkordeons.

Es gibt zwei Arten von Helikon-Stimmplatten:

01: Einfachhelikon = 1 Stimmzunge
02: Doppelhelikon = 2 Stimmzungen

Bei Doppelhelikon Stimmzungen ist eine Stimmzunge eine Oktave höher gestimmt.
Doppelhelikon-
Stimmplatten klingen besser und sprechen auch bei hohem
Balgdruck besser an.


http://www.musiker-board.de/threads/helikonbässe.439331/
Die Helikonzungen sind meist mindestens doppelt so lang und auch doppelt so breit, so dass man den ganzen Zungensatz tiefer legen kann und auch keine Gewichte braucht. Durch den viel größeren Querschnitt ändert sich die Lautstärke und auch das Oberwellenspektrum. Für das Ansprechen der Zungen ist unbedingt jeweils eine Beibasszunge (Eine Oktave höher) erforderlich, sonst kann es passieren, dass die Dinger gar nicht erst losgehen.

(you can click on the helikon bass photo in this thread of the German forum)

Helikon bass reeds in accordions can be very low pitched, starting even from very low C.
 
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