Fretless with a low F#

[DiabolusInMusic]

For F#, you are incorrect. F# really isn't low at all anymore. There are already fully functional strings for the C# and G# (13Hz) below F#. Sub-amplification is available for bass, it's just not mainstream. Kalium have a sub with flat response to 20Hz. Other types of sub amplification is very common in PA systems.

A PA system can also be massive and is built for the purpose, it's also not limited by acoustic power butt by electrical power. A stadium concert sound system is far louder that a church organ.

Commonly stated but actually refers to a typical small hearing test setup. The fact is with enough power and sound pressure, any frequency is hearable.

The fundamental is not important, the fundamental of B is not reproduced either.


What gauge and brand of string? Some are very stiff and inharmonic, some are under-tensioned. A good, flexible and well-tensioned string is very defined at F#, try a Kalium.
37" or 35" is long enough for a good sounding F#.

I do not know the gauge but it was extremely thick, noticeably thicker than the B string. The bass was fully setup for F# with a nut cut and everything.

Even on a 37" scale, some B strings get overtones as you climb up the neck. A proper fan to go down to F# would need to be noticeably longer, probably pushing an inch.

 

[ixlramp]

Ric5, good point, i was sloppy writing that. Hearing by the ear probably does have a lower limit but then the sound pressure is heard by the body, with enough power. Also, by 'any frequency' i meant any low frequency. Obviously there is a high limit.