LX521 - The Reference

LX521 - The Reference

The LX521.4 exemplifies the best of 50 years of experimentation about rendering stereo recordings in domestic living spaces.

Designed by Siegfried Linkwitz, free of commercial pressures, aiming for a fully satisfying enjoyment of his favourite music. With the LX521.4 , he has arrived at a level of performance, which makes him search no further.

Neutral sound, clarity, speed, spatial openness and disappearance from one's auditory illusion. It renders a superb recording, probably as good as it gets. A highly enjoyable experience.

The LX521.4 is a 4-way loudspeaker, designed as full-range dipole, for flat on-axis and off-axis response in the horizontal plane and frontal hemisphere. The speakers need breathing room of at least 1 m to the nearest large reflecting surfaces and a room with a minimum floor size of 25 sqm.


  • V-frame woofers and baffle supports are dull dark anthracite.
  • Bridges and topbaffles colored in individual custom color or made from precious wood MPX-veneer of choice e.g. American Walnut, Cherry, Bubinga, Paduk, Mahagony.
  • Panzerholz, Panzerholz/precious veneer and Alu-Panzerholz-Alu topbaffles are available on special request.
  • Bridges come with elegant 45deg miters.

Shipping Information:
The turnkey V-Frame woofers are 33kg each.
To ship the system with all woofer drivers installed, it needs a 130kg airfreight palette. Airfreight cost to the US: usually 800-1200€. 
If you select the cheaper parcel shipping (4 parcels, limit:30kg each), the upper woofers will ship in an extra parcel. They need to be inserted after delivery with 8 bolts and nuts.


Product Note Price
PowerBox 6pro NCore PowerBox 6pro NCore
PowerBox 4180 PowerBox 4180
LX521 cable from PowerBox 6pro NCore LX521 cable from PowerBox 6pro NCore
BS Foam BS Foam
Backside of the two mid drivers lacquerd black
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