QSC K8.2

A powered full-range top, 1 x 8 in LF + 1 x 1.4 in HF. The figures below have not yet been checked against the datasheet.

Unverified data. Entered from the manufacturer’s page. Check the datasheet before relying on it.

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Specifications used

Maximum level	128 dB peak at 1 m
Power	2000 W (amplifier module (features list); spec table gives peak 1800 W LF + 225 W HF)
Coverage	105° horizontal × 105° vertical
Frequency range	55 Hz to 20000 Hz (-10 dB point)
Weight	12.2 kg
Size (w × h × d)	280 × 449 × 269 mm
Pole socket	Yes
Source	Manufacturer page (2026-10-10)

How the level was stated. Calculated for 1 m from sensitivity and amplifier peak power (full-space for full-range); not a measurement. Page also prints a continuous figure of 122 dB at 1 m.

Coverage definition. Printed as nominal coverage angle, axisymmetric (so H = V). The K.2 series spec table labels it -6 dB; the per-model page does not repeat the definition.

Notes. No sensitivity printed. Pole cup mounts (standard and 7.5 degree down-tilt) listed; pole socket diameter not printed on this page. Dimensions labelled H x W x D on page.

Coverage shape

Horizontal: 105° (seen from above)

Vertical: 105° (seen from the side)

What the figures mean at distance

Taking 128 dB at 1 m on axis and the free-field rule of 6 dB lost per doubling of distance, this is the most the speaker can reach and how wide and high its nominal coverage is at each distance. A real room adds reflections, and a speaker is not normally run at its maximum.

Distance	Level on axis	Coverage width	Coverage height
2 m	122.0 dB	5.2 m	5.2 m
5 m	114.0 dB	13.0 m	13.0 m
10 m	108.0 dB	26.1 m	26.1 m
15 m	104.5 dB	39.1 m	39.1 m
20 m	102.0 dB	52.1 m	52.1 m

See level and distance and coverage angles for how these are worked out.

Planning estimate only. The calculation ignores reverberation, reflections and room modes. See terms and disclaimer.