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Premium AI Voice Guide
PROLiam's bench-side rundown of the PSB Passif II.
Real-time streaming voice — specs, history, restoration pain points, market value.
Sonic Similarity Analysis
The Passif 50 is a direct descendant and tribute to the original Passif II, maintaining the same passive radiator bass loading philosophy and neutral tonal balance that made the original famous. PSB updated the drivers with modern materials and tighter tolerances while preserving the sonic DNA—accurate midrange, smooth highs, and extended bass—that audiophiles loved in the 1974 original.
PSB Passif II
vs.
PSB Passif 50
86 dB
Sensitivity
87 dB
8–8 Ω
Impedance
8–8 Ω
10–100W
Power Handling
15–150W
2-way
Driver Count
2-way
1in dome tweeter, 6.5in mid-woofer, passive radiator
Driver Config
1in titanium dome tweeter, 6.5in polypropylene mid-woofer, passive radiator
Sealed
Enclosure
Sealed
Bookshelf
Size
Bookshelf
45Hz – 20kHz
Frequency Response
42Hz – 23kHz
18 lbs
Weight
22 lbs
Vintage (used avg)
$650
Modern (new)
$1,499
Difference
$849more new
Cross-Match Engine · Pro Preview
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Complete the setup
Everything the PSB Passif II needs
Acoustic & Room Tuning
Cabling & Power
Storage & Racks
Peripherals
Streaming & Wireless
Maintenance & Care
Control & Lighting
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Synergy Score · Pro
How well does the PSB Passif II lock in with an amp?
Scored on bench-corrected power (not just brochure watts), impedance and current demand, tonal complementarity, and decades of community pairing wisdom.
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