|AR(Acoustic Research) AR-91
|158,000 yen(around the one-set and 1980 time)
3 way floor type speaker system of the vartical series which inherited the
design philosophy of AR-9.
The 30cm corn type Woofer is carried in
The unit of a 1.9cm dome shape is carried in the 3.8cm dome
shape and the high region in the inside region.
Between the voice coil and
the yoke, the magnetic fruid of the shape of colloid which is tinged with the
magnetism of NASA development was put in, and the input-proof is improved while
aiming at distorted reduction from a central axis as a structure as for which
Bure is not.
Furthermore, the acoustic blanket which is a special
sound-absorbing material was attached to the surroundings of a unit, and sound
quality degradation by reflective sound is prevented.
A network part
puts a speaker on an actual listening room in consideration of dissolution of
wall dip, or examination is added under the environment of field front opening
of 180 degrees, and the design is carried out.
Moreover, a "17AWG sky core coil", a "computer class electrolytic
condenser", "input-proof [ unguided quantity ] ceramic resistance",
etc. are used for the element.
suspension system of AR tradition is adopted as the enclosure.
system, air can achieve the duty of a spring by carrying out full sealing of the
core, compliance can be enlarged, and it is possible to make low-pass resonance
Moreover, walnut oil finishing is given.
||3 ways, 3 speaker acoustic suspension system, and a floor
||For low-pass: 30cm corn type
For inside regions: 3.8cm
For high regions: 1.9cm dome shape
||27Hz - 30kHz
|Low-pass play frequency
|Output sound pressure level
||4ohms (a minimum of 3.2ohms)
|The continuation maximum input
|The maximum input
||Inside region: Three-step switching
||Width 356x height 800x depth of 290mm