The JBL Studio 698 is the flagship floorstanding loudspeaker in the Studio 6 series, and its specification makes clear what kind of role it is intended to play. This is a substantial three-way design with four drivers, a bass-reflex enclosure, dual rear ports, a 1-inch compression tweeter in an HDI horn, a dedicated 6-inch midrange unit, and two 8-inch woofers. It is built for listeners who want a physically capable main speaker rather than a compact floorstander with limited low-frequency ambition. Its combination of large bass drivers, horn-loaded high frequencies, and flexible connection options gives it relevance in both traditional stereo systems and more ambitious home cinema installations.
A flagship position within the Studio 6 range
The Studio 698 occupies the top position in JBL’s Studio 6 series, and that status is reflected in its scale and driver complement. At 1058 mm tall, 300 mm wide, and 400 mm deep, and weighing 35.8 kg, it is a serious loudspeaker in physical terms. This size is not merely cosmetic: the cabinet volume, dual woofers, and three-way architecture all point toward a design intended to handle a broad frequency range with dedicated drivers for different parts of the spectrum.
For a prospective owner, that matters because a three-way floorstanding speaker can divide musical and cinematic duties more specifically than a simpler two-way design. In the Studio 698, bass, midrange, and treble are handled by separate driver sections, with crossover points specified at 320 Hz and 1.8 kHz. This arrangement allows the two 8-inch woofers to focus on low-frequency work, the 6-inch midrange driver to handle the central band where much of the musical and vocal information sits, and the horn-loaded compression tweeter to cover the upper frequencies.
Three-way driver layout with dedicated midrange focus
One of the most important design choices in the Studio 698 is the inclusion of a dedicated 6-inch midrange driver. In a full-size speaker designed for both stereo recordings and film soundtracks, the midband carries a large amount of critical information: vocals, dialogue, guitars, piano fundamentals, brass, strings, and much of the perceived body of instruments. Assigning this region to its own driver can be useful because the midrange unit is not simultaneously being asked to reproduce the deepest bass.
The bass section is handled by a pair of 8-inch woofers. Dual woofers give the speaker a large radiating area for low-frequency reproduction, and the published frequency range of 36 Hz to 40 kHz indicates that the Studio 698 is designed to cover a wide span. While actual in-room performance will always depend on placement, room size, and partnering equipment, the use of two large bass drivers is a clear part of this model’s appeal for listeners who want a main speaker with meaningful low-end capability.
All three cone-based drivers use JBL’s PolyPlas composite diffuser material. The source material describes PolyPlas as a patented composite construction: a lightweight sandwich with two polymer layers and a cellulose base between them. The intended benefit is greater rigidity and reduced parasitic resonance. The cones also use concentric ring patterns, a relief structure designed to help the diaphragm resist unwanted bending and deformation. These are practical engineering choices aimed at keeping the moving surfaces more controlled across their working ranges.
HDI horn tweeter and controlled high-frequency dispersion
For the treble, the Studio 698 uses a 1-inch compression tweeter with a neodymium magnet system. Rather than mounting this tweeter on a simple flat baffle, JBL places it inside a large rectangular HDI, or High Definition Imaging, horn. Horn loading is a long-established JBL theme, but in this speaker it is framed around wide and uniform dispersion of high-frequency sound waves.
The practical value of this approach is not limited to volume capability. Dispersion behavior affects how a speaker interacts with a room and how consistently the tonal balance is perceived across different listening positions. A horn designed for controlled distribution of treble energy can help shape the way high frequencies spread into the listening area. For systems used by more than one listener, or for home cinema front channels where seating may not be limited to a single central chair, that design goal is especially relevant.
The published specification lists the upper end of the frequency range at 40 kHz. Stereoindex should not infer audibility or performance beyond the supplied information, but the figure does show that the tweeter system is specified to extend well beyond the traditional 20 kHz limit associated with human hearing. For users building systems around high-resolution sources, this extended specification may be part of the product’s appeal.
Cabinet construction and bass-reflex loading
The Studio 698 cabinet is described as a well-damped enclosure with a mass close to 36 kg. A rigid, heavy cabinet is important in a speaker of this size because the enclosure has to support multiple moving drivers, including two 8-inch woofers, without turning panel vibration into an unwanted contributor to the sound. The cabinet also uses rounded edges intended to reduce diffraction effects. Diffraction occurs when sound waves encounter sharp edges, so softening the cabinet profile is a considered design decision rather than a purely visual one.
Bass loading is provided by a rear-ported bass-reflex system with two ports integrated into the back of the enclosure. The source notes optimized port geometry intended to reduce overtones from the cabinet. For owners, rear ports mean placement deserves attention. The Studio 698 is unlikely to be a speaker one casually pushes tight against a wall without considering the room. Its bass-reflex design can be a strength when given sensible breathing space and appropriate positioning, particularly in systems where the main speakers are expected to carry substantial low-frequency information.
The removable grille is fabric over a plastic frame and attaches magnetically. Magnetic attachment keeps the front baffle free of visible peg holes when the grille is removed, preserving a cleaner appearance. This is a small usability and aesthetic detail, but it is the kind of finishing choice that helps a large speaker integrate more gracefully into a living room.
Connection flexibility for conventional, bi-wired, or bi-amped systems
The Studio 698 is fitted with four screw terminals, allowing standard single-wired use as well as bi-wiring or bi-amping configurations where the rest of the system supports them. This gives owners and installers more flexibility than a single pair of binding posts would provide. Some users will simply connect one amplifier channel per speaker in the conventional way. Others may appreciate the option to separate amplifier feeds for the high/mid and low-frequency sections.
The speaker’s nominal impedance is specified at 6 ohms, with sensitivity listed at 90 dB at 2.83 V/1 m. Maximum recommended amplifier power is 250 W per channel. These figures suggest that system matching should be approached with a competent amplifier appropriate for a full-size floorstander, particularly if the speakers are to be used in a larger room or as front channels in a dynamic cinema system. The specifications do not require exotic assumptions, but they do support the idea that the Studio 698 is meant to be partnered with electronics of suitable quality and current capability.
Design for modern rooms without hiding its scale
Large floorstanding speakers often face a domestic challenge: they need to be visually acceptable as well as technically convincing. The Studio 698 addresses this with rounded cabinet lines, a lacquered top panel, and wood-effect vinyl finish options in two color schemes. The article’s source material describes the finish as high-quality vinyl film under the tree, meaning a wood-style appearance rather than exposed natural veneer.
This visual approach is pragmatic. The Studio 698 is not trying to disappear physically; its dimensions and dual-woofer layout make it a prominent object in a room. However, the combination of curved edges, clean front treatment, magnetic grille attachment, and furniture-friendly finish options makes it easier to position in a modern interior. The supplied spikes further indicate that JBL expects the speaker to be installed as a stable floorstanding component rather than treated as a casual lifestyle accessory.
Who the JBL Studio 698 is most suitable for
The Studio 698 is most suitable for listeners who want one speaker model to cover serious stereo duties and front-channel home theater use. Its three-way layout, dual 8-inch woofers, and wide specified frequency range make it relevant for music systems where the main speakers are expected to provide scale and bass foundation, and also for cinema rooms where the left and right channels must support soundtracks with authority.
It is also likely to appeal to buyers who value JBL’s horn-loaded tweeter approach and prefer a speaker with a more substantial physical and technical presence than a slim compact tower. The bi-wiring and bi-amping terminals add flexibility for users who like to configure systems beyond a basic connection scheme.
It may be less suitable for very small rooms, minimalist interiors, or setups where speakers must be placed extremely close to the rear wall. The rear bass ports and large cabinet deserve space and careful positioning. It is also not the most understated choice for someone who wants a small, visually discreet loudspeaker. In short, the Studio 698 is aimed at owners who can accommodate its size and want the advantages that come with that scale.
Conclusion
The JBL Studio 698 stands out as a substantial three-way floorstanding speaker with a clear emphasis on scale, driver specialization, and system flexibility. Its dual 8-inch PolyPlas woofers, dedicated 6-inch PolyPlas midrange driver, HDI horn-loaded compression tweeter, rear dual-port bass-reflex cabinet, magnetic grille, supplied spikes, and four-terminal connection panel all support its role as the flagship of the Studio 6 series. It is best suited to listeners building a serious stereo system or a capable front-channel home theater setup, especially where there is enough room to place and power a large loudspeaker properly.
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