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Informace o produktu Hertz HX 250 D.4

Exemplary efficiency
     HX subwoofers represent maximum efficiency in low frequency reproduction.

     Using innovative technology originally developed for the Mille line, working temperature of the subwoofer is drastically reduced. The goal being higher thermal dissipation, raising the resistance limit and increasing sustained power handling.
The forced ventilation cooling system channels the heat generated by the motor assembly into a vent hole positioned in the extended bottom plate, as well as eight radial venting holes directed at the voice coil itself. A complete exchange of hot air with fresh cool air is performed with each complete stroke of the cone assembly.

     The new HX series is designed to immediately satisfy those who look for a subwoofer capable of extreme output with high mechanical excursion, while still maintaining hi-fidelity acoustic reproduction.

Technical Information
     HX subs are the result of exhaustive research, simulations and tests. From the design of the motor assembly, unique basket and the proprietary V-cone, to the selection of the materials, nothing was overlooked.

     The pure copper voice coil is wound on a duralumin former, resistant to the assemblies high working temperatures.

     The exclusive spoke design of the anti-resonant alloy basket with the Mica Injected Polypropylene V-cone combine to increase the internal damping, and prevent reflexions and resonances from affecting acoustic reproduction.

     A special mix based on a polyurethane-foam blend was developed for the surrounds, ensuring stability and efficiency.

     In addition, the gasket was designed to offer two possible mounting methods, this detail too coming from the Mille line: traditional cone-out installations or a highlighted inverted installation, with the basket and motor assembly visible to all.

     Care for the details and accurate selection of materials make the HX subs an outstanding product, even in competition grade installations.

     To a professional, choosing a subwoofer always depends on its output capability: that is why a considerable amount of the HX project focused on this issue. The forced ventilation cooling system, the basket design, the extended centre pole piece, the coil materials: each single detail was optimized to reduce the working temperature and keep parameters stable.

     The cover over the bottom plate is made of rubber to improve the mechanical coupling between the basket and motor assembly, as well as to help damp any extraneous resonances. A solution which cosmetically contributes to emphasize the HX robustness, but most of all guarantees a solid reliable product, even under extreme circumstances.

     The Hi-Energy HX line also features dual voice coil models, easily identifiable by their “D” nomenclature at the end of their model number designation. Each “D” subwoofer is supplied with special connectors, for a series or parallel connection directly at the terminals.

     This provides a fast and easy way to configure the subwoofer for maximum output and sound quality in any system configuration.

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komponent: Subwoofer
velikost (woofer): 250mm
trvalé zatížení (Watt): 450
špičkové zatížení (Watt): 900
impedance (Ω): 4 + 4
frekvenční odezva (Hz): 34 - 800
citlivost (dB/SPL): 88
vnější průměr (mm): 268
průměr montážního otvoru (mm): 234
velikost magnetu (mm): 190
celková hloubka (mm): 178
montážní hloubka (mm): 150
hmotnost výrobku s balením (kg): 9.5
průměr cívky(mm): 65

ELECTRO-ACOUSTIC PARAMETERS
D: 210mm
Xmax: 14mm
Re: 5.8ohm
Fs: 34Hz
Le: 7.27mH @ 1kHz
Le: 2.42mH @ 10kHz
Vas: 20.54 lit
MMs: 176.9gr
Cms: 0.12nm/N
BL: 23.34T-m
Qts: 0.37
Qes: 0.39
Qms: 6.80
SPL (1m/2.83): 88dB

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