Hand-selected version of their signature 1 titanium dome tweeter for the T3 are used to ensure smooth, accurate highs free from distortion and grain. The midrange and woofer cones are made of polymer-coated felted fibreglass, mated to high-temperature fibreglass voice coil formers. Rubber surrounds and highly rigid, non-resonant die-cast aluminium baskets provide precise alignment of all the driver elements for superb accuracy and long-term reliability.
Three Woofers are Better than OneThree 7-inch woofers are arranged in PSB's three-woofer transitional array, where all the woofers combine to produce the longest wavelengths of sound in the lowest frequencies. At higher musical frequencies, woofers are strategically attenuated until only the woofer adjacent to the midrange is active, creating a perfect transition with uniform off-axis response. The position of each woofer, and the exact crossover slope, has been carefully optimized to reduce first acoustic reflections, also known as 'floor bounce'. Floor bounce is responsible for response irregularities, and occurs for all speakers unless compensated for, as in the Imagine T3. Another advantage to using multiple woofers is more efficient transfer of energy into the air compared to a single larger woofer. The varying positions also tend to excite a broader spectrum of room resonances, thus preventing the 'one note bass boom' that often occurs with powerful full-range speakers. Utilizing smaller cones with large motors results in higher sensitivity and more accurate piston motion of the cone for faster transient response and lower distortion.
The Imagine T's tall and slender cabinet not only looks great, but also places the more directional tweeter right at ear level for best imaging. When used as bass chambers, however, tall narrow enclosures tend to have a serious 'pipe resonance' that can ruin bass transients and performance. PSB addresses this issue by using individually tuned chambers for each woofer. The dividers for these chambers also add significant structural rigidity to the cabinet, further suppressing resonances. Since each chamber has its own rear firing tuning port, you can fine-tune the in-room response with the supplied port plugs. These work by reducing overall acoustic output in the lowest frequencies, which can be beneficial in smaller rooms or when the speaker must be placed close to the wall behind. Additionally, the bottom woofer can be disconnected from the amp and shorted using the provided woofer shorting bar, thus creating a 'bass trap' or damper to further suppress room resonances.
Midrange is Where the Music Lives
Individual Bass Chambers Suppress Unwanted Resonances
The majority of musical information is reproduced in what we call the midrange. It sounds a little boring next to woofers and tweeters, but the range between 200Hz and 2,000Hz contains most of the musical information related to pitch and timbre of instruments and voice. It just happens to be the most sensitive range for our ears, too. The Imagine T3 uses a specially developed 5 ¼" midrange driver, and tunes and isolates it in its own sealed chamber. The result is a lifelike presence that is palpable. The 5 ¼" size has a nearly perfect combination of low distortion, high output capability, and ideal dispersion over the desired frequency range, allowing it to integrate smoothly with the woofers and tweeter.
High Resolution Tweeter
The Imagine T3 is using a hand-selected version of PSB's famous titanium dome tweeter. This 1" dome features a neodymium magnet, high temperature voice coil and ferrofluid cooling, allowing it to keep pace with the high power handling of the rest of the speaker. Several years spent perfecting the production process has resulted in a tweeter with extremely smooth response and amazingly low distortion compared with other well-known tweeter designs. The integrated 'phase plug' is ingeniously designed to extend high frequency response while also creating an 'air spring' that effectively dampens the metal dome's 'oil can' resonance. Although this resonance is beyond the audible range, if not well suppressed it can affect the audible range. Excellent power handling allows PSB to ideally place the crossover point at 1,800Hz, which enhances the dispersion and integration with the midrange driver.
Advanced Driver Technology Reduces Distortion
Proven engineering combined with advanced technology in PSB's all-new drivers reduce distortion and respond more faithfully to musical transient, which is accomplished in two ways. Firstly, a copper cap is precision fitted over the pole piece of the motor structure to dramatically reduce 3rd harmonic distortion. Secondly, a symmetrical drive design is used to create a more uniform magnetic field in the motor (driver) coil which makes the cone motion more linear by reducing 2nd harmonic distortion, especially at high volume levels where the cone motion is greatest. The woofers and midrange utilize polymer coated felted fibreglass cones mated to a high temperature fibreglass voice coil. Rubber surrounds and a highly rigid non-resonant die cast aluminium alloy chassis provide precision alignment of all speaker components for high performance and excellent reliability. Combined with amplitude-perfect acoustic Linkwitz-Riley 4th order crossovers, these advanced drivers provide the lowest distortion and highest power handling of any PSB speaker. That says a lot, since PSB became famous for the 10,000 watt Stratus Gold speaker back in the 90s!
Like Fine Furniture
The sleek and distinctive Imagine enclosure was designed by the renowned industrial designer, David Farrage of DF-ID, and carefully engineered by PSB. The Imagine T3 employs seven layers of MDF (a dense, non-resonant wood material) and a unique process that employs space-age materials to create a beautifully curved, yet acoustically inert structure. The front baffle is a massive 2" thick MDF panel that provides a solid foundation for the drive units. The carefully sculpted trim rings around each driver provide a perfect low diffraction transition to the driver cone enhancing off-axis performance while hiding the fixing hardware and dampening unwanted vibrations. The hand-finished cabinet is available in piano high gloss black and in book-matched cherry veneers with a high gloss varnish. The gloss finish reflects other design elements in the room allowing the speaker to blend in to the environment and appear smaller than it really is.
Finishing Touches that Count
The PSB Imagine T3 includes a one-piece aluminium plinth with adjustable spikes, ideal for use on carpet to gain stability and give a clean mechanical interface with the floor—even with uneven floors. Isolation pucks with carefully engineered rubber dampers are also included for hardwood floors to prevent damage. The T3 features multiple input terminals for bi-amping and tri-amping if desired, along with the unique ability to use one woofer as a bass trap to tame room resonances, and to adjust the bass to perform perfectly in a wide range of room sizes and shapeA Heritage of Performance