Fostex / GX160BJ

<> The Fostex/GX160BJ is the latest speaker system in the GX series, inheriting the philosophy of professional reference monitors that Fostex has cultivated over many years. It combines a newly developed titanium diaphragm tweeter with a unique HR diaphragm woofer, and is thoroughly tuned in pursuit of the ideal two-way speaker.

■Speaker System

■16cm

■8Ω

■100 W (MAX)

■1 unit

■Product Overview

This product inherits the philosophy of professional reference monitors that Fostex has cultivated over many years. It combines a newly developed titanium diaphragm tweeter with a unique HR diaphragm woofer, and is the latest model in the GX series, meticulously tuned to pursue the ideal 2-way design. It delivers deep emotion and listening pleasure through high-fidelity reproduction that meticulously depicts the core of the music, creating an immersive sound image.

■Main Features

● Newly Developed 1-inch Ridge Dome Titanium Diaphragm Tweeter: The tweeter features the newly developed 1-inch dome tweeter FT36TD, with a diaphragm molded from titanium in a ridge dome shape. Combined with an optimized diffuser shape, it provides playback capabilities equivalent to reference monitors, boasting clear and high resolution. The ridge dome shape disperses resonance by varying the distance from the voice coil to the dome's apex. While achieving the high-speed response unique to metal diaphragms, it disperses inherent resonances that cause coloration. The titanium diaphragm and voice coil bobbin are joined with two types of adhesives with different properties, accurately transmitting the voice coil's movement to the diaphragm. The voice coil winding uses a short type, and the design ensures it does not stray from the magnetic field of the magnetic circuit, resulting in improved power handling and high-precision high-frequency reproduction with low distortion and excellent tracking. The FT36TD tweeter's voice coil uses a silver-plated silver-copper alloy tinsel wire, offering both high sound quality and durability. In the cavity inside the dome, a non-woven polyester fabric with excellent acoustic properties is applied to the top of the magnetic circuit pole to adjust the acoustic balance.

● Fostex's proud traditional HR diaphragm woofer: The ridge dome titanium diaphragm woofer uses the standard FW168HR unit, a 16cm unit. The adoption of the HR diaphragm disperses specific frequency peaks caused by partial vibrations, eliminating inherent tones, while maintaining high rigidity despite its lightweight design, resulting in high-resolution and fast-paced bass reproduction.

* HR (HP ROTATION) in HR diaphragms refers to a modification of the HP (HYPERBOLIC PARABOLOIDAL) shape, known in the field of structural mechanics, by adding rotation in the circumferential direction. This shape allows only shear stress to act as internal stress, eliminating bending stress. This results in a lightweight, highly rigid diaphragm with excellent properties for dispersing resonance caused by partial vibrations. It is used in the woofers of Fostex professional monitor speakers, including the NF06 and RS10A.

* The diaphragm material is optimized and manufactured using a hybrid construction with a base material combining wood pulp and non-wood pulp in an optimal ratio, and high-performance materials such as ultra-high modulus carbon fiber, PBO, and celgaia pulp. It possesses ideal rigidity and internal damping for a woofer diaphragm, achieving propagation speeds approaching those of metal diaphragms.

* The magnetic circuit is designed to minimize force factor changes in order to stabilize the amplitude of the vibration system. It ensures linear tracking with minimal change from minute signal input to large input, suppressing distortion, and also reduces current distortion by placing a copper cap on the pole piece.

* The edge uses a UDR tangential shape. This is an abbreviation for Up/Down Roll Tangential edge, a structure that combines up-roll and down-roll tangentially. It is used in the woofers of Fostex professional monitor speakers, along with the HR diaphragm.

* Composite structure board material used. Domestically produced enclosure. To reproduce a natural and rich sound, following the basic philosophy that has continued since the original GX100 (released in February 2009), it uses laminated plywood material with an olefin sheet finish on the surface, based on MDF which maintains stable strength and shape as a board material, and has natural vibration damping and a moderate resonance. The baffle plate supporting the unit is 20.5 mm thick, and the top, bottom, left, and right side panels are 17.5 mm thick, ensuring appropriate rigidity while matching resonance and reverberation. The back panel is 14.5 mm thick to ensure appropriate vibration damping.

■Main Specifications

●Type: Bass reflex, rear-facing

●Driver Units: 16 cm woofer, 25 mm dome tweeter

●Frequency Response: 45 Hz ? 42 kHz (-10 dB)

●Sound Pressure Level: 85 dB/W (1 m)

●Impedance: 8 Ω

●Maximum Power Handling: 100 W (MAX.)

●Crossover Frequency: 1,500 Hz

●Dimensions: 250 (W) x 368 (H) x 339 (D) mm (including grille)

●Weight: 10.8 kg (including grille)

●Material: MDF

●Finish: Olefin-based decorative sheet

●Accessories: Grille x 1, Quick Manual x 1, Safety Precautions