ONKYO Scepter E-503A

Scepter E series 3-way bookshelf speaker system using Scepter series speaker units.
The W-305A, a 30cm cone woofer, is used in the low frequency range.

The newly developed lightweight cone and foamed neoprene rubber edges are used to reduce the weight of the vibration system.
The midrange is equipped with a horn-type screener.
A newly developed diffusion-type horn converts sound waves into spherical waves inside the horn, greatly improving the directivity characteristics, which had been a weak point of the horn type.
The diaphragm uses an ultra-hard duralumin foil diaphragm, and the transient characteristics and distortion characteristics have been improved by active air damping in the back cavity, thereby extending the reproduction range of the low frequency range.

In the high frequency range, the TW-1800A diffusion horn tweeter is mounted.
The precision-machined aluminum horn, coupled with a unique diffusion mechanism, provides a natural sound quality with a low horn odor. The diaphragm uses an ultra-hard duralumin foil diaphragm, which offers superior stress to strain characteristics compared to conventional materials.
Level controls are provided for the mid and high frequencies.

The enclosure is a 50L sealed bookshelf type enclosure.
It is equipped with a multi-amplifier terminal.
For the high frequency range, a 2.5cm dome-type unit made of aluminum-magnesium alloy, which is 25% lighter than conventional units, is used.

The sound field is so rich that it is hard to believe that the sound is coming from compact speakers. The sound localization is excellent, and the vividness of each musical instrument and singer is very impressive.

Condition	Surprisingly good considering age
Accessories	None, one of the multi-amp terminal covers is missing

Type	3-way, 3-speaker, sealed, bookshelf type
Impedance	8 ohms
Frequency Response	30Hz~20kHz
Crossover frequency	800Hz,9kHz
Output sound pressure level	93dB/W/m
Maximum input	60W
Rated Input	30W
Size	376W x 6505H x 300Dmm
Weight	19kg