CUSTOM DESIGNS - SUB HORN BUILDING
The Biggest SUBWOOFER of the WORLD
for the most esoteric Audio Room of the World
The Highest efficiency ever obtained with NO distortion using NO feedback tube low power amplifiers and NO crossover on the speakers
Royal Device has on its own developped and built the biggest subwoofer of the world for an AUDIO/VIDEO room that can be also considered as the biggest AUDIO ROOM for private music listening of the world. The audio reproduction is focused on the speakers output capability more than electric power output of the amplifiers with no need of KWatts power supply lines, releasing a 110 dB/1W/1 meter sensitivity starting from below 10 Hz focused on the listening position.
See photos below and click for
The AUDIO room is 6.95 x 8.70 meters.
SUBWOOFER horns are built underneath the floor in a cavity of 1 meter deep. Each horn is driven by 8 x 18" (47 cm) woofers. A total of 16 woofers.
Each horn is 9.5 meters long and has a mouth area of 2.2 square meters and reproduce starting from 10 Hertz FULL POWER.
Total efficiency: 110 dB/1 watt/1 meter
SUB-WOOFER Compression chamber closure ( 120 Kg on 3,6 mq) are held and reiforced by an extra weight of 600 Kg. Total closure weight 720 Kg.
Acoustic level at listening position (6 meters from frontal speakers) are 100 dB with 1 Watt.
THE HOLE for the SUB WOOFER - more than 60 cube meters
The horns have been designd to obtain a very narrow low pass filter
ONE SECTION SHOWN
HORN for the SUBWOOFER
TWO SECTION SHOWN - top view
TWO SECTION SHOWN - top view - before making the floor
The RD Audio Room during set-up
before opening the compression chamber of the SUB WOOFERS
The 8 Lauras - The central RD Horn - and the 8 X 47 cm WOOFERS
It can also be seen all the acoustic wall and ceiling treatment before the curtains finishing.
Viale dellIndustria 19
21052 Busto Arsizio (VA), ITALY.
Tel. +39 0331 354070
Fax. +39 0331 342445