ONKYO Monitor 500

Commentary

Compact 2-way speaker system with materials and technology in a compact size.

A 23 cm diameter unit with a high-rigidity pure cross carbon 2-layer structure is used for the low frequency band.
In addition, a large magnet of φ 160x φ 85x20tmm, which is almost the same as the effective vibration diameter, and a large voice coil of φ 76 mm are adopted, and driving force and braking force are

A 2.5 cm hard dome unit with a special alloy diaphragm is used for the high frequency range.
Two parts around the diaphragm are cut by laser processing to effectively disperse the resonance and flatten the high-frequency resonance peak, thereby improving the transient characteristics.

For the network, in addition to the centralized one point grounding method applying the design know-how of the integra amplifier and the woofer / tweeter circuit separation method, the layout of each part of the network is also analyzed strictly.
In order to solve the problem of crosstalk caused by the coupling between coils, a magnetic flux distribution measuring device linked with a computer is used, and the arrangement of the network is determined to be minimized.
High-quality parts with low impedance, low distortion rate and high input resistance, and extra-thick OFC (oxygen-free dynamic) wiring materials are used for the parts.

The enclosure is made of resin concrete with high rigidity and high density, and adopts a large and smooth round baffle with R determined by comparison with an infinite baffle.
This resin-concrete front baffle is mounted on top of a particle-board cabinet.

Model Rating

Method	2-Way, 2-Speaker, Bass Reflex System, Bookshelf Type
Units Used	For low band : 23 cm cone type For high-pass : 2.5 cm dome type
Playback frequency band	30 to 45000 Hz
Crossover frequency	1300kHz
Impedance	6 Ω
Max Input	160W
Output sound pressure level	87dB/W/m
Cabinet internal volume	19.5L
External dimensions	257 mm W x 452 mm H x 308 mm D (including RUNNET)
Weight	17kg