JBL S4700
High-efficiency 3-way JBL floorstanding speaker, fitted with a 380 mm woofer and two horn-loaded compression drivers, for dynamic and precise listening.
Description
The JBL S4700 is a high-efficiency 3-way floorstanding speaker, built around a horn-loaded architecture drawing on principles from the brand's professional range. The cabinet is made from 25 mm thick MDF, which contributes to the rigidity of the structure.
The bass is handled by a 380 mm woofer with a pure cellulose pulp cone. The midrange and treble are provided by two compression drivers, one 45 mm unit for high frequencies and one 19 mm unit for ultra-high frequencies, mounted in a horn-loaded arrangement. The crossover frequency between midrange and treble sits between 800 Hz and 12,000 Hz. With a sensitivity of 94 dB and an impedance of 6 ohms, the speaker makes the most of modestly powered amplifiers while handling up to 300 W RMS. The stated frequency response spans 38 Hz to 40,000 Hz (-6 dB).
With dimensions of 1068 x 500 x 371 mm and a weight of 63.2 kg per unit, the S4700 is aimed at setups with a substantial listening space, capable of accommodating a floorstanding speaker of this size. Its high efficiency and horn-loaded design make it a relevant choice for enthusiasts seeking dynamic reproduction and strong power handling.
Technical specifications
| Design | 3-way |
| Cabinet | 25 mm thick MDF |
| Sensitivity | 94 dB |
| Impedance | 6 ohms |
| Frequency response | 38 - 40,000 Hz (- 6 dB) |
| Crossover frequency | 800 Hz - 12,000 Hz |
| Max. power handling | 300 W RMS |
| UHF driver | 19 mm diaphragm |
| HF driver | 45 mm diaphragm |
| Bass driver | 380 mm diameter, pure cellulose pulp |
| Dimensions (H x W x D) | 1068 x 500 x 371 mm |
| Weight | 63.2 kg (unit) |
What to check before buying used
The 380 mm bass driver warrants a visual check of the cloth surround and the frame, as wear or sagging noticeably alters the bass response. The titanium diaphragms of the two compression drivers should be checked for any deformation or misalignment, a sensitive point on this type of driver. It is also worth listening to each channel separately to ensure the midrange and treble work correctly across the full stated crossover range, and to check the condition of the rear bass-reflex port.
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