Opus 3 and Opus 4 are both two stop, one rank continuos. They are identical to each other except for
the wood used for the cases. They have a single rank of pipes that plays at both 8’ and 4’ pitch by
way of a transmission. The bottom two octave are stopped and the rest of the pipes are open.
The organs come in two parts. The base contains the blower and reservoir and is built on casters
so that the organs can be easily moved on flat surfaces without any disassembly. The top section
contains the windchest, pipes and manual. There are retractable handles on each end so that two people
can comfortably lift the top section. The exterior dimensions of the complete organ
are 990mm wide by 900mm tall by 415mm deep (39.0" x 35.4" x 16.3").
The manual is 51 notes (C-d3) and has Rosewood naturals contrasted with sharps made of veritcal grain Maple.
The organ is transposable to A-415, A-440 and A-466. There are 64 pipes for full compass at A-440 and A-466.
Low C is retuned for A-415. The angle of the music rack can be adjusted to 56, 64 or 72 degrees. The playing
height of the manual is 875mm (34.4”) which allows the organist to play while standing or sitting.
The casework is constructed of solid wood using mortise and tennon joinery. Opus 3 is made of Walnut and Opus 4
is made of Khaya. The pipes are made of Poplar with Mahogany caps and are winded with either aluminum tubing or
through grooves in the toeboard. The decorative panels are made from vertical grain Maple and are backed with
accoustically transparent cloth. The windchest and some parts in the base are made of Baltic Birch plywood.
Each organ comes with a bench made of wood matching the case. The benches use blocks to adjust the height to three positions.
A quilted cover is included to protect the organ during storage.
Here are some photos of Opus 4: