Audio Database

111AD
Commentary

A speaker system designed to eliminate distortion of bass reflex speakers by adopting aerodynaport.

In the conventional bass reflex method, distortion was caused by turbulence generated at the port outlet due to low-frequency energy of wind velocity of 30 to 40m/sec. In order to improve this port defect, the 901 Series employs a reactive air column that utilizes hydrodynamics. In order to introduce this technology into compact speakers, we refined hydrodynamics and established a unique port theory, EDS (Energy Dispensing Structure), based on which the 111 ad was designed.

The 111 ad uses a unique Aerodina port for the bass reflex port. This port has a unique shape designed according to the EDS theory using fluid mechanics. Even though the low frequency is 25% lower than a speaker of the same size and the amount of air flowing through the port is double, there is little port noise and high quality bass range is achieved.
In addition, the AERO DINAPORT controls the movement of the cone paper by giving an appropriate reaction of air pressure to the back pressure of the cone paper. By suppressing unnecessary movement of the cone paper, it can handle large input with a margin.

A 11.5 cm cone type full range unit has been adopted for the unit.
This unit uses reinforced cone paper made by a special construction method, dampers with excellent linearity, edges, powerful magnetic circuits, and aluminum bobbins.
By introducing a computer, we have succeeded in winding an aluminum ribbon with a 4 : 1 ratio in length and width on a bobbin edgewise without any gap. In addition, it is treated with an ultrathin molecular insulating material.

The cabinet is made of the same specially molded polymer as the 802, which received an exceptional award from the United States Plastics Industry. This material is extremely dense, easy to process, and can be used in micron order for precise aerodynaport designs.
In addition, it is reinforced by computer analysis to prevent resonance.

There were 2 types, black type 111 ad and white type 111 adw.

Model Rating
Method 1-Way, 1-Speaker, Basref System, Setting-Free Type
Units Used For all bands : 11.5 cm cone type
Impedance 6 Ω
Allowable input 45W(rms)
150W(peak)
External dimensions Width 232x Height 158x Depth 178 mm
Weight 2.8kg
Sold Separately Ceiling / Wall Mounting Bracket CW-30B/W (Pair, ¥ 9,000)
Ceiling Hanging Bracket CB-300B/W (Pair, ¥ 12,500)
Ceiling Lifting Brackets (Close Type) GCS-2 (Pair, ¥ 3,000)
Wall Mounting Bracket (Close Type) GWS-200 (Pair, ¥ 4,500)
Pan Stand GMA-3/W (Pair, ¥ 12,000)
Desktop Stand TS-1 (pair, ¥ 12,000)
Tripod Stand MK-4 (1 piece, GMK-4 included, ¥ 9,500)
Microphone Stand Adapter GMK-4 (pair, ¥ 6,000)
Remarks Microphone Stand Adapter GMK-4 Compatible Screw Standard : 3/8, 5/8, 5/16 inch