15 inch Subs (38cm)

Energy ES subwoofers were designed to work best when used in small enclosures. However, their electro-acoustic parameters are optimised for use in many different enclosure types; both in terms of typology (sealed box, reflex, bandpass, etc.) and in size, insuring extraordinary versatility and performance. The use of a long excursion mobile voice coil and high flux density double magnet have created subwoofers that can stand very high power with outstanding musicality and bursting dynamics. The special anti-scratch finish and butyl rubber rings offer protection and an aggressive look.

Hi-Energy HX Subwoofers represent the highest technological expression in terms of low frequency reproduction. The V-cone provides wide acoustic dispersion, making the sound even more powerful.
The forced ventilation system provided by the venting holes on the bottom plate, along with a specifically designed extended centre pole piece and the materials selected for the voice coil, combine for high thermal dissipation. The ultra-light aluminium basket, with its spoke shared profile, reduces any unwanted resonance from the chassis itself. The special finishing materials and the rubber protection covering the magnetic assembly, besides decreasing resonance, add an aggressive, stylistic cosmetic look. The engineered balance of the electro-acoustic parameters make the HX subwoofers suitable for sealed acoustic suspension enclosures as well as vented reflex enclosures, generating powerful, dynamic low frequency response.

The forced ventilation system provided by the venting holes on the bottom plate, along with a specifically designed extended centre pole piece and the materials selected for the voice coil, combine for high thermal dissipation. The ultra-light aluminium basket, with its spoke shared profile, reduces any unwanted resonance from the chassis itself. The special finishing materials and the rubber protection covering the magnetic assembly, besides decreasing resonance, add an aggressive, stylistic cosmetic look. The engineered balance of the electro-acoustic parameters make the HX subwoofers suitable for sealed acoustic suspension enclosures as well as vented reflex enclosures, generating powerful, dynamic low frequency response.

The Hertz SPL Show subwoofers are the ideal solution for building mobile audio systems with emphasis placed on low frequency power and impact.
Featuring a stacked triple magnet motor assembly and 2 + 2 ohm dual voice coil, the three models, SX 250D, SX 300D, SX 380D differ only in their cone diameter: 250 mm, 300 mm, 380 mm respectively.
The SPL Show moving assembly is designed to ensure long and linear excursion. They feature a dual spider design and a four-layer voice coil wound on an extraordinary long aluminium former.
The Back Vented Spider Support decreases voice coil operating temperature, even during enhanced SPL usage. By connecting the two voice coils in parallel, impedance is cut in half, making the most of the amplifier's available power and achieving even higher sound pressure levels.

M 15 UNLIMITED subwoofers are designed for true SPL competitors.
M 15 UNLIMITED offer the ability to choose the moving assembly which is most appropriate for the overall system design and conditions, achieving maximum SPL in every competition. The innovative RMA, Removable Moving Assembly, provides the ability to replace the entire mobile assembly in few seconds, without removing the speaker from its mounting position. For each configuration you can choose the mobile assembly which is most effective, differing in the number of spiders, cone material and voice coil impedance.
The SPL Monster subwoofers will undergo continued modifications and upgrades, thanks to our ongoing research and the feedback we welcome from the competition field!