Passif 50
Grounded in Science
The Passif 50 leverages five decades of acoustics research and design experience. Since the early 1970s, PSB has been an active participant in the world-famous acoustics program at Canada’s National Research Council. An engineering team led by PSB founder and chief designer Paul Barton measures prototypes in the NRC’s anechoic chamber, then correlates these measurements with extensive subjective listening tests. This process has led to an unbroken series of products acclaimed by listeners and reviewers for their tonal fidelity, spatial realism, and effortless dynamics – even at high listening levels. The Passif 50 Standmount Loudspeaker is the latest product of PSB’s time-tested design process.
Leading Edge
While the Passif 50 has a similar driver complement to the Passif I and Passif II, it’s a ground-up design, with an all-new driver platform and enclosure. The result is a speaker that accurately reproduces music exactly as the creators intended – without colouration of any kind.
The titanium dome tweeter employs a powerful neodymium magnet and ferrofluid damping, for higher output, improved power handling, and reduced distortion. A phase plug in front of the tweeter’s dome directs the tweeter’s output to ensure a wide and consistent dispersion well beyond the traditional listening window. This creates a wide and deep soundstage with very acute imaging which isn’t reliant on a precise listening position. A felt pad surrounding the tweeter minimizes edge diffraction for improved transparency and more stable imaging.
The woofer and passive radiator have cast aluminum baskets that resist flexing, and filleted rubber surrounds that dampen cone resonances, resulting in smoother response and reduced distortion. Considerable engineering effort was invested in refining the interaction between the woofer and the passive radiator. The result is a state of perfect balance of their opposing forces.
Truly Timeless
While the Passif 50’s enclosure profile is similar to its classic forebears, there are several important differences. The Passif 50 is sold in mirror-imaged pairs. Having both tweeters on the inside of the soundstage results in improved imaging. All joints in the heavily braced enclosure are mitred for improved fit and finish and reduced cabinet vibration. Featuring dual five-way binding posts, the Passif 50 can be bi-wired or bi-amped.
In addition to their warm walnut veneer enclosures, woven cloth grilles, and dedicated stands, the Passif 50 has numerous anniversary edition aesthetic elements. These include a pull tab on the front grille, which sports PSB’s original logo, and a rear-panel plaque adorned by a maple leaf and an inscription that reads, “Passif 50 – 1972-2022.” With its cutting-edge technology and gorgeous retro design, the Passif 50 honours the past, embraces the future, and delivers sound that is True to Nature.
Features and Details:
1" titanium dome tweeter with ferrofluid damping and neodymium magnet
6.5" woofer and 8" passive radiator with cast aluminum baskets, paper cones, and filleted rubber surrounds
Retro-styled open-grained walnut veneer enclosure and dedicated speaker stands
Magnetically attached woven cloth grilles
50th anniversary design touches, including original PSB logo and pull tab on the grille, and rear-panel plaque that reads “Passif 50 – 1972-2022,” adorned by a maple leaf
Felt surrounding the tweeter minimizes edge diffraction
Bi-wirable/bi-ampable five-way gold-plated binding posts
Speaker alone dimensions: 660mm H x 280mm W x 2540mm D (26” x 11” x 10”)
Speaker with stand dimensions: 870mm H × 280mm W × 254mm D (34” x 11” x 10”)
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DIMENSIONS (W × H × D) 431 × 144 × 358mm
FRONT PANEL HEIGHT 3U / 132.6mm (5.25")
POWER REQUIREMENTS 120V, 60Hz
POWER CONSUMPTION 400W
STANDBY POWER CONSUMPTION <0.5W
NET WEIGHT 13.63kg (30.05lbs.)
BTU RATING (4O, 1/8th power) 810 BTU/h
MAXIMUM POWER OUTPUT 200W/Ch (4O)
CONTINUOUS POWER OUTPUT 120W/Ch (8O)
TOTAL HARMONIC DISTORTION <0.018%
FREQUENCY RESPONSE Line Level Inputs:10Hz - 100kHz, ±0.5dBDigital Inputs:10Hz - 90kHz, ±2dBPhono Input:20Hz - 20kHz, ±0.5dB
S/N RATIO (IHF "A" Weighted) Line Level Inputs: 100dBDigital Inputs: 100dBPhono Input: 80dB
INTERMODULATION DISTORTION (60Hz:7kHz, 4:1)<0.03%
DAMPING FACTOR 300
INPUT SENSITIVITY Line Level Inputs (RCA): 270mVLine Level Inputs (XLR): 440mVDigital Inputs: 0 dBFsPhono Input (MM): 2.1mV
INPUT IMPEDANCE Line Level Inputs (RCA): 100kOLine Level Inputs (XLR): 100kODigital Inputs: 75OPhono Input (MM): 47kO
INPUT OVERLOAD Line Level Inputs (RCA): 4VLine Level Inputs (XLR): 5.5VPhono Input: 32mV
PREOUT LEVEL 1.5V
OUTPUT IMPEDANCE 470O
COAX/OPTICAL DIGITAL INPUT SIGNALS LPCM (Up to 24-bit/192kHz)
PC-USB USB Audio Class 1 (up to 24-bit/192kHz)USB Audio Class 2 (up to 32-bit/384kHz)**Driver installation requiredMQA and MQA Studio (up to 24-bit/384kHz )Roon Tested