Audio Database


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.

The horn super tweeter is adopted as a super-high region.

Rating of a mode
Scheme 4 ways, 4 speaker bass-reflex scheme, and a floor type
Using unit For low-pass: 38cm cone type (W3801)
For 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 120W
Impedance 8ohms
Output sound pressure level 96dB/W/m
Maximum output sound pressure level 117dB/m
Cross over frequency 800Hz, 5000Hz
Cabinet internal volume 200L
Level control The independent level control for TW and STW
Dimensions Width 650x height 1296x depth of 624mm
Weight 97kg