A typical 4-reed Cajun box has the following reed configuration for each treble note:
1 main reed
1 reed detuned from the main reed for tremolo effect (typically tuned sharp)
1 reed an octave above the main reed, not detuned
1 reed an octave below the main reed, not detuned
Note that only one of the reeds is detuned, and it's at the same pitch (or close) to the main reed. Putting two reeds an octave apart out by the same number of cents will put the octaves of the detuned reeds out of tune with each other, which may be more tremolo than you want.
Following that setup might get you as close as you can get on a harmonica run through an effects unit. (other accordions will use variations on the above, with fewer or more reeds, different amounts of detuning, etc.).
Winslow Yerxa
Author, Harmonica For Dummies ISBN 978-0-470-33729-5
--- On Tue, 11/24/09, Blunt White <playharp@xxxxxxxxxxx> wrote:
From: Blunt White <playharp@xxxxxxxxxxx> Subject: [Harp-L] Cajun - effects boxes To: harp-l@xxxxxxxxxx Date: Tuesday, November 24, 2009, 5:10 PM
By running 2 effects boxes together one can get an approximation of a cajun squeeze box. A Harmonic Octave Generator (HOG) adding 4 octaves (no fifths or thirds) plus a Detune effect from a Digitech RP 200 (about 18 cents sounded "wet" enough) . Won't replace a squeeze box, but still cool.
Blunt White
Banker by day, Bluesman by night
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