L-Acoustics X15 HiQ Review: Rated 4.4/5

Last updated: October 21, 2026

The L-Acoustics X15 HiQ is rated 4.4/5 for sound quality, #2 of 76 15-Inch PA Speakers. See all PA & Live Sound rankings for every top pick.

L-Acoustics X15 HiQ · Editor's rating 4.4/5, ranked #2 of 76 15-Inch PA Speakers

Prices on this page were last checked November 7, 2026 at 7:34 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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Brand: L-Acoustics

#2 L-Acoustics X15 HiQ: $4,180 Passive eBay

Same family: the L-Acoustics X4i (smaller model, rated 3.6/5), the L-Acoustics X6i (smaller model, rated 3.9/5), the L-Acoustics X8 (smaller model, rated 4/5) and the L-Acoustics X12 (smaller model, rated 4.6/5).

Pros: An excellent sounding 15 inch PA speaker, a compact coaxial stage monitor with very clean vocals and loud peaks. Vendor Spinorama data gives preference scores of 5.31 standalone and 8.06 with an ideal subwoofer, the highest ideal-subwoofer score in the 15-inch ranking. Listening-window narrow-band deviation is a low 0.186 and predicted in-room smoothness is 0.703, so vocals and stage-monitor mixes stay clean. Bass reaches about 73Hz (-3dB) with a 138dB maximum SPL from a 21kg coaxial cabinet. Measured bass extension of 73Hz (-3dB).

Cons: This passive monitor needs an L-Acoustics amplified controller such as the LA4X or LA12X to work at all. Its narrow 40° x 60° pattern suits a stage monitor but covers less of a room than wider mains. Bass reaches only about 73Hz (-3dB), so a subwoofer is still needed for full-range music.

Released2015 (11 years ago)
AES InputNo
Amplifier PowerPassive speaker; requires an L-Acoustics amplified controller (LA4X, LA12X or LA7.16i)
Aux InputNo
Bass Extension (-3dB)73Hz (measured, vendor Spinorama data)
BluetoothNo
Cabinet MaterialBaltic birch and beech plywood
Coaxial InputNo
ConfigurationPassive 2-way coaxial PA stage monitor
Coverage40° x 60°
DSPNo (passive; processing and protection come from the amplified controller)
Drivers15” neodymium woofer, 3” neodymium compression driver (coaxial)
Frequency Response55Hz - 20kHz (manufacturer specified)
Guitar InputNo
HDMI InputNo
InputsSpeakon input and link
Maximum SPL138dB (manufacturer specified)
Microphone InputNo
Optical InputNo
PassiveYes
RCA InputNo
RiggingTwo handles, M8 and four M10 threaded inserts, two 35mm pole sockets
Spinorama Preference Score5.31
Spinorama Preference Score with Perfect Sub8.06
TRS InputNo
USB InputNo
Weight46.3 lbs (21 kg)
XLR InputNo

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