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Sub E3 KSU-118 is a high-power passive subwoofer model in the high-end segment of the E3 Audio brand - Germany. This product is researched to replace traditional electric subwoofer models, improving from structure to performance, to solve the common limitations of old generation subwoofers.
With a 50cm bass driver, 1000W capacity, 99dB sensitivity and frequency response down to 30Hz, the E3 KSU-118 delivers deep, powerful bass, suitable for spaces of 20m² or more.
The E3 KSU-118 subwoofer scores with many notable design and performance elements, creating practical value for users:
The E3 KSU-118 has a large square box design, giving a strong and professional feel when placed in a karaoke space or small stage. The speaker cabinet is made of high-quality MDF wood covered with scratch-resistant black paint, both increasing durability and creating high aesthetics.
The front is equipped with a stainless steel grille to protect the speaker inside and increase sound dissipation. The E3 brand logo stands out in the middle, clearly showing the origin and reputation.
One of the strongest points of the E3 KSU-118 is its ability to reproduce extremely deep bass, with a response range from 30Hz to 150Hz (±3dB). With a 50cm diameter speaker and a 10cm voice coil, the sub delivers powerful, solid sound without buzzing or echoing.
1000W continuous operating capacity, combined with sensitivity up to 99dB helps create a peak SPL level up to 133dB - enough to meet the high volume needs in open spaces or singing rooms over 20m². Bass drum sounds, organ sounds, stage effects... are all reproduced more clearly and deeply when combined with Sub E3 KSU-118.
The subwoofer of E3 KSU-118 is manufactured on a modern production line, integrating many improvements in materials and mechanics. The speaker membrane is made from cellulose fiber-pressed paper - a material that helps create soft bass without being dry and stiff. The speaker tendon has high elasticity, increasing its lifespan when operating at high intensity.
The 10cm diameter voice coil uses a high-temperature resistant core to prevent magnetic deformation when the sub operates continuously for a long time. These technologies not only ensure stable performance but also increase the mechanical durability of the device.
The E3 KSU-118 is a subwoofer model, so it needs to be paired with a suitable power amplifier (main). With 8Ω impedance and high sensitivity, the subwoofer can easily connect to popular 2-channel or 4-channel karaoke mains.
The product works best when combined with a 30-40cm full bass speaker system, a digital reverb with a separate subwoofer or crossover to filter frequencies. Using a subwoofer helps to share the load for the main speakers, reduce low frequency pressure and help the overall sound to be clear, clean, and not confusing when playing at high volume.
Unlike powered subwoofers whose power is limited by the built-in amplifier, passive subwoofers like the E3 KSU-118 offer more flexibility and durability. The passive design prevents the product from overheating and has a longer lifespan when used in a continuous business environment.
Many customers at Phuc Truong Audio after installing this sub in a karaoke room over 25m² all gave positive feedback about the stability, even coverage and clear difference in bass compared to when not using the sub.
E3 KSU-118 is a subwoofer model specialized for spaces requiring strong, deep and durable bass. The product is especially suitable in the following cases:
To ensure buying the right genuine E3 KSU-118 subwoofer, customers should choose reputable distributors with experience in the field of professional karaoke audio.
One of the trusted addresses for users is Phuc Truong Audio - a long-standing audio equipment supplier, specializing in genuine subwoofers, karaoke speakers and power amplifiers from major brands such as E3 Audio, JBL, BFaudio, CAVS...
Here, customers not only experience the actual products at the showroom with a professional sound testing system, but also receive support from the technical team in coordinating and installing them on-site according to each specific space.
In addition, Phuc Truong Audio also commits to a full 12-month warranty policy, lifetime technical support, free specialized connection accessories, and nationwide delivery. If you are in need of a high-power subwoofer, durable design, and powerful bass, then the E3 KSU-118 at Phuc Truong Audio is a choice worth considering.
Subwoofers do not have a built-in power amplifier and need to be paired with a power main external, thus often providing higher power, wider bass range and more stable sound quality at high volume levels. This is especially suitable for large karaoke rooms or business sound systems.
With a capacity of up to 1000W and a 50cm bass driver, the E3 KSU-118 is suitable for spaces of 20-35m² or larger, especially effective in flight rooms, lounges, sounding board mini or multi-person karaoke room.
Absolutely, if your sound system has the right power amplifier. However, to exploit the full performance of the under, should be used in rooms with an area of 20m² or more and are well soundproofed.
Although the E3 KSU-118 does not have a built-in crossover like a powered sub, you should use a digital reverb or Crossovers Dedicated to dividing frequencies and filtering bass signals, helping the sub work effectively and protecting full-range speakers from overload.
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