Cone Design: The woofer cones are clay/ceramic filled polypropylene to optimize the combination of stiffness, internal damping, and low mass. The magnetically neutral polycarbonate baskets contribute additional stiffness, and the bullet-shaped phase-plugs enhance linearity at higher frequencies.
Tweeter: The 1" titanium, Ferrofluid cooled dome tweeter's light yet rigid diaphragm and over hung voice coil, combined with a computer optimized magnetic circuit produce an extended high frequency response that remains distortion free even at extreme volume levels. The front baffle is designed to eliminate mid and high frequency diffractions, maximizing three dimensional realism.
Crossover Network: The crossover is a 2-way acoustical fourth order Linkwitz-Riley type with a 24 dB/octave slope. The tweeter and top woofer are crossed over at 1,800 Hz, the bottom woofer plays only 800 Hz and below.
Cabinet: The cabinet is an integral part of speaker design and has a dramatic effect on the overall sound of a speaker. PSB's 7-layer laminated construction results in a solid, acoustically inert enclosure. The side and top panels are curved for added stiffness, with a wood veneer exterior. Internally the cabinet has two separate chambers, each with its own port on the rear panel.
Port Cover: There are two ports on the rear panel, one for each of the internal chambers. One port cover is included to seal a port (if necessary), thereby changing the bass tuning characteristics of the speaker to correct the interaction with the room. If needed, additional port covers can be obtained from PSB for a nominal fee.
Binding Posts: The dual binding post input terminals are located on the lower rear of the speaker cabinet. The two sets of binding posts are shorted together by a gold-plated jumper. With the jumper removed the Imagine T5 can be bi-wired or bi-amplified. The binding posts will accept spade connectors, single banana plugs, pin connectors, and bare wire up to 8 gauge.
Leveling Feet: The Imagine T5 includes two sets of leveling feet; the rubber covered feet are used on a hard surface and add approximately 1/2" to the height of the speaker, the carpet spikes add approximately 1" to the height.
On Axis @ 0°: 35-23,000 Hz (+/-3 dB)
On Axis @ 0°: 48-20,000 Hz (+/-1.5 dB)
Off Axis @ 30°: 48-10,000 Hz (+/-1.5 dB)
Low Frequency Cutoff -10 dB: 30 Hz
Anechoic Chamber: 88 dB
Typical Listening Room: 90 dB