HiFi SPECS

A/B comparison · Speakers

Q Acoustics M20 vs Polk Audio Signature Series S20

Specs from both manufacturer datasheets Updated Jun 25, 2024

CH A Q Acoustics M20

Q Acoustics M20

Channel A · Powered Bookshelf · 2021

About $729 a pair

VS
CH B Polk Audio Signature Series S20

Polk Audio Signature Series S20

Channel B · Bookshelf · 2017
Q Acoustics M20 Polk Audio Signature Series S20
20 Hz 100 1k 10k 20k
8.6/10Q Acoustics

Rows won, of 11 compared Q Acoustics 0 · Polk Audio 1 · tied or not compared 10

Datasheet · Side by side

Spec by spec

Built from both structured spec sheets. The delta chip sits on the winning side; rows with no defensible winner carry no chip.

Sound & drivers

2-way Configuration 2-way
1x 0.75" Tweeter + 1x 5" Mid-woofer Drivers 1x 1" Tweeter + 1x 6.5" Mid-woofer
55 Hz to 22 kHz Frequency responseReference not published 39 Hz to 40 kHz
105 dB Max SPL Not published
Ported (Bass Reflex) Enclosure Ported (Bass Reflex)
49 Hz Port tuning Not published

Power, electrical, physical

88 dB SensitivityReference not published 88 dB
6 Ω Impedance 8 Ω
25 to 75 W Amp range 20 to 125 W
279 mm · 24.3 lb Checked against the maker's own sheet, Sep 2026 Source Height · weight 379 mm
2 yr Warranty 5 yr +3 yr

A higher sensitivity figure means the same loudness from less amplifier power. Values come from each manufacturer datasheet.

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Availability

Where they stand on price

Q Acoustics M20
Availability last checked Jun 25, 2024
Polk Audio Signature Series S20
Availability last checked Jun 25, 2024

We do not show live prices; price tiers are our editorial categories. As an Amazon Associate, HiFi Specs earns from qualifying purchases. Our scores and comparisons are never influenced by affiliate partners.