Strong bassy sound

SEYDEL's low and superlow-tuned harmonicas - since 2004

SEYDEL's Next-Generation Low-Harmonicas: the lowest-tuned Blues-Harmonicas worldwide - with a unique Baritone design & stainless steel-reeds

The 1847 CLASSIC or 1847 NOBLE is available in super-low tunings, redesigned to include a 20% thicker comb and raised coverplates. Available keys range from LF# (low F sharp) down to LLE (double-low E). This innovation expands our 1847 line of Stainless Steel reed harmonicas to include the extreme bass range.

The double-low models (LL) are tuned two octaves lower than standard, making SEYDEL’s 1847 LLE the lowest tuned diatonic harmonica worldwide.



Nearly all musical instruments have their own resonance chambers. High-pitched instruments (for example, alto and soprano) require a smaller resonance chamber whereas low-pitched instruments (for example baritone and bass) require a larger resonance chamber. The harmonica has no built-in resonance chamber for amplifying sonic waves.



How is a full and loud tone produced with a harmonica?

Harmonicas produce sound by a free-reed system. As you introduce air to the harmonica, either blowing or drawing, the reeds are actuated, rapidly moving up and down, cutting the airstream and produce the sound you hear. Higher-tuned reeds move faster producing the higher-frequency of sound. Low-tuned reeds move more slowly, cutting the airstream at a lower frequency, producing the low, sonorous tones. The resonance chamber in the case of the harmonica is the provided by the player. The player’s mouth cavity forms the resonance chamber creating a functional unity between player and instrument.

For this reason, the shape of the player’s mouth cavity is crucial to the tone produced by the instrument. An expanded mouth cavity and deep, diaphragmatic breathing combine to produce strong, fat tones. The principle of opening the jaw to form a larger resonance chamber is also used by singers who produce loud sounding low notes (like vocalizing the low-sounding vowel "Oh").

The SEYDEL 1847 Low-series (LLE to LF#) incorporate a thicker comb with deeper coverplates. This encourages the player to adopt the wider embouchure and form a larger resonance chamber (mouth cavity). Additionally the new coverplate design has a very positive influence on sonority and volume by creating greater sound projection towards the audience through the wide-opened back of the instrument.

These fundamental improvements help to make the low notes sound fuller than on other low-tuned harmonicas without this special baritone design.


Comparison between Brass and Stainless Steel reeds of low-pitch diatonics in the key of LLF:


Frequency analysis (FFT) of the octave F2-F3 (1 and 4 blow) for sound and volume comparison: same distance to the measuring microphone, identical playing pressure: The 1847 Low plays louder and sounds fuller (blue curve) - the peaks at 355 and 532 Hz (fundamental frequencies) are stronger compared to the the Favorite (black curve); refer also to the envelopes.


Listen by yourself: small:1 & 4 blow on LLF Harmonicas - Comparison: Brass reeds vs. Stainless Steel reeds


Please move your mouse to the desired note and click to play the sound!


The middle C is named C4 (by international convention), nevertheless Germany and some eastern countries use the name c' (Harmonica label = C) - our harmonica labels refer to the lowest note of the instrument mostly situated in hole 1 blow (e.g. there exist three different variants of a harmonica tuned in F: standard F (lowest note: F4), low F = LF (lowest note F3) and double-low F = LLF (lowest note = F2).

However we label some instruments (e.g. our Natural Minor-tuned instruments) refering to the root note of the natural minor scale, situated in hole 2 draw.




Download the current catalgue for printout!

Catalogue pdf


I want to learn playing Blues harmonica:

> SEYDEL Sound Check Vol 1 Blues Beginner Pack



I like to get even more information about harmonicas and playing-techniques:

> Worth knowing info are available here

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