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Liam will walk you through the Boston Acoustics A150 Series II.
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Premium AI Voice Guide
PROLiam's bench-side rundown of the Boston Acoustics A150 Series II.
Real-time streaming voice — specs, history, restoration pain points, market value.
Sonic Similarity Analysis
Both speakers deliver balanced, musical sound with tight bass control and clear imaging, representing their brands' flagship efforts in accessible price ranges. The A150's three-way design and 89dB sensitivity find modern expression in the R700's similar efficiency and driver configuration, with both speakers offering full-range performance that works well with vintage receivers.
Boston Acoustics A150 Series II
vs.
Polk Audio Reserve R700
89 dB
Sensitivity
89 dB
4–4 Ω
Impedance
8–8 Ω
20–150W
Power Handling
50–300W
3-way
Driver Count
4-way
1in dome tweeter, 5.25in mid, 10in woofer
Driver Config
1in Pinnacle tweeter, 6.5in Turbine mid, 2x 6.5in woofers
Bass-reflex
Enclosure
Bass-reflex
Floorstander
Size
Floorstander
35Hz – 20kHz
Frequency Response
32Hz – 38kHz
52 lbs
Weight
61.7 lbs
Vintage (used avg)
$450
Modern (new)
$1,999
Difference
$1,549more new
Cross-Match Engine · Pro
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Reverse-match works both ways. Point us at a receiver and we surface compatible vintage speakers and turntables — matched on power, impedance, and era. Point us at a pair of speakers and we surface receivers with enough headroom to drive them cleanly. Available on Pro and Flipper Pro.
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