KEFQ150

speaker

New retail price (MSRP)

$300

Used market: $215*

Check price at Thomann Manufacturer datasheet

Specifications

6 of 8 values have a recorded source

System type: Passive Bookshelf·
Inputs: Binding posts✓
Minimum impedance dip: 3.7✓
Nominal impedance: 8✓
Recommended power: 10–100 W✓
Sensitivity at 2.83 V: 86✓
Release year: 2017·
Indexable Locales: ·

Expert Audio Engineering Commentary

Headroom notes

86 dB at 2.83 V / 1 m. Because the nominal load is 8 ohms, 2.83 V is exactly 1 W here, so this figure needs no correction — unlike the 6-ohm speakers it is usually compared against. It is a genuinely quiet speaker: the Uni-Q's low sensitivity is the price of its dispersion.

Amplification Warning

KEF prints both numbers: 8 ohms nominal, 3.7 ohms minimum. The 3.7 is the one an amplifier actually meets. A receiver rated only into 8 ohms will run at roughly twice the current it was specified for wherever that dip sits, and a cheap AVR's protection circuit is the thing that notices first. Treat this as a 4-ohm load when choosing an amplifier.

Setups using this gear

Cambridge AXA35 allows 8 ohms only — and the KEF Q150 dips to 3.7

* Estimated with the depreciation fallback (~72% retained value).