|ONKYO Scepter 500
|580,000yen(one-set, around the 1978 time)
way large-sized floor type speaker system which adopted the horn unit.
A 38cm cone type unit is adopted as low-pass.
This unit is driven in
the magnetic circuit of high flux density 11000gauss with the long voice coil
which adopted the polyimide short bobbin containing a Copper-foil slit, and a
180phix95phix20mm ferrite magnet.
Moreover, a polyimide laminate length
damper, a reinforced ring, etc. excellent in the edge which had an internal loss
also in the supporting system moderately, and was excellent also in the
linearity of displacement, and a linearity and a robustness are adopted, and the
high suspension system of an effect is constituted.
The horn type unit
is adopted as a mid-high range at each.
It is adopted as a super-hard
duralumin diaphragm for squawkers, and the titanium diaphragm is adopted as a
tweeter at the diaphragm.
A free edge and multiplex equalizer etc. is used
for a tweeter, and the elongation and transparency of a high region are raised.
Moreover, a horn part uses a sectoral horn (horizontal diffusion angle
of 90 degrees) for a squawker, and is using the Catenoidal horn with an
acoustic lens (horizontal diffusion angle of 120 degrees) for a tweeter.
super tweeter is adopted as a super-high region.
||4 ways, 4 speaker bass-reflex scheme, and a
||For low-pass: 38cm cone type (W3801)
mid ranges: The method of a sectoral horn (D6540 A+H 4003S)
For high regions: A Catenoidal horn type with an acoustic lens
For high super-regions: Horn type (TW3001)
|Play frequency band
||25Hz - 35000Hz
|The maximum input
|Output sound pressure level
|Maximum output sound pressure level
|Cross over frequency
|Cabinet internal volume
||The independent level control for TW and STW
||Width 650x height 1296x depth of 624mm