Vox Maris - the voice of the sea

Vox Maris

Vox Maris is the name of the most well known instrument Hey Organ Builders has constructed. She was built for the Expo 2012 in Yeosu, Korea, and with a volume of 138,4 dB set the Guinness world record as the loudest organ in the world at the Open Day in Urspringen, 21. October 2011. The organ has 80 pipes, up to 10 Meters long, and is a marvel of construction and technology. To devise and build an open-air organ that can withstand wind and weather, stay in tune through any temperature changes that may take place, that can be heard throughout the Expo grounds, can be played dynamically and last not least be played from a tablet PC or other mobile device begs to have completely new technologies invented to fulfill these requirements. So the pipes of the Vox Maris were developed from principles of the Steam Whistle (Calliope) and through their 360 degree Labium develop an impressive volume that diffuses in all directions. The pressure required to bring these pipes to life is about 1,000 times greater than your average church organ, and the system produces a staggering 20,000 liters of  compressed air every minute. One of the highlights of the Expo is that Vox Maris can be heard more than six kilometers away, and yet with reduced pressure is able to be played in harmony with other instruments directly at the Sky Towers during a concert.


range: 32', A - e '' '' ''
manual: 80 keys
pedal: 32 keys
frequencies: 28 - 2640 Hz
volume: 85 - 138.4 dbA
wind pressure: 10.000 - 100.000 mmWS
power supply: 110 KW motor
construction: Vox Maris & Carrier Pipe units
length: 1,70 - 10,00 m
console: mobile & wireless
expression system: two tone wheels
keys: dynamics & velocity
connection: via android application, Wi-Fi & cable
world record: the loudest pipe organ
research & development: led by Thomas Hey


Nebenregister und Spielhilfen

II16'/I II16'/II II4'/P
II4'/I II4'/II I/P

Pressurestore for different volumes
Wheel for free pressure- and volumecontrole
Wheel for Modulation
Attack control for fast - moderate - slow keyboard response

Touchscreen with
Coupler Device:
You are free to add any note above or below the played key. For example a Septime, None or Duodezime, etc. even chords are programmable

Bass Hold Function:
Any bass note that is played can be held until the release button or another bass key is touched. This offers the possibility of simulating foot pedal play.

Echo Repeater:
This function allows the organist to record and repeat directly melodies or pentatonic scales to be able to play along with two hands. Rich soundscapes can be created!

The organ is planned for accompanying an orchestra or solo artist. The Transposer offers the opportunity of changing the pitch of the pipe organ in halftone steps up and down to fit different tunings.

Recording Device:
You are able to record your performance and repeat it at any time.