Conn 34K/35K BBb Monster Sousaphone
Date: 1926, owned by Boaz Kim
The BBb Monster Sousaphone was available in 6 versions: the three valved 34K Low Pitch, three valve 35K High Pitch, four valve 36K Low Pitch, four valve 37K High Pitch and 42K three-valve "Jumbo", 44K four valve "Jumbo". The 34K-37K were in production from 1919 to at least 1926, the 42K and 44K from at least 1924 to 1926. The difference between the "Monster" and "Jumbo" versions lay in the size: The Jumbos were about 13 pounds heavier, 7 inches longer, 6 inches wider with a 4 inch larger bell.
What Conn said in 1926:
As explained on the opposite page, many band leaders prefer the original Sousaphone type as presented here rather than the Grand model, which is almost universally used for orchestra and ball-room work. Choice between the two models is largely a matter of taste, since there is no difference between them in tone, intonation, or ease of blowing. Each of these Conn models represents the highest type of development of that particular instrument, as no less a personage than Mr. Sousa himself has said.
The BBb model shown here is used in Mr. Sousa's own band, and is the improved counterpart of the first Sousaphone ever built, which was made more than a score of years ago in the Conn factories. It is used in most of the large concert bands today, and is conceded by band leaders generally to be a most necessary part of the instrumentation of any band of more than average size.
The adjustable bell makes it possible to direct the sound as desired, and since it is detachable it makes for great convenience in packing and transporting the instrument.