Introduction

LXstudio is 3-way loudspeaker that combines the LXmini with two LXsub4 dipole woofers.

It requires addition of two 200 W or four 50 W power amplifiers and a miniDSP 4x10HD unit to form a system that covers the 20 Hz to 20 kHz frequency range with excellent clarity and dynamism. With an LR2 crossover at a low 60 Hz, the dipole woofers can be placed against the side walls of a room and the LXmini used as near-field monitors. Path length differences to the listener can be compensated for in the DSP unit. Dipole woofers have the advantage of less room mode excitation, Dipole woofers have the advantage of less room mode excitation and thus preserve articulation in bass sounds, which matters even in a highly damped recording/mixing studio.

LXstudio is a speaker that is on par with the LX521.4 in terms of frequency range, clarity, imaging, sound stage size, dynamics and disappearance, albeit at somewhat lower maximum sound levels in the midrange and above. It is more flexible in room placement and woofer setup. LXstudio provides precise and highly revealing rendering of stereo recordings.

LXstudio Construction Plans

The LXstudio Construction Plans are available as PDF only and consist of two parts:

LXmini Construction Plans + LXsub Construction Plans.

To order the LXstudio plans choose these two items from plans, CDs downloads (or navigate to LINKWITZ.store or Madisound)

If you already own the LXmini plans, then you only order the LXsub plans from plans, CDs downloads (or navigate to LINKWITZ.store or Madisound).

The LXsub Construction plans contain information for building LXsub2 and LXsub4.

I provide Owner Support pages for updates to the LXmini and LXsub.
Questions for help should be posted on the OPLUG forum.
Have fun, create memories!

Complete systems

After you have received the Construction Plans you may realize that you do not have the time, skill or confidence to build the speaker system yourself. Or, you may know this from the outset and want to buy a professionally assembled and finished system. Here then are licensed manufacturers, who ship worldwide:

From Germany: www.LINKWITZ.store for LXmini, LX521, LX521.4, LXstudio with PowerBox

See Terms, Conditions & Blacklist to guarantee that you receive a genuine LINKWITZ LAB product.

At the "Reproduced Sound 2015" Conference of the the UK Institute of Acoustics I gave a talk "The Magic in 2-Channel Sound Reproduction - Why is it so rarely heard?"

The pictures below show an outdoor frequency response measurement of LXmini and LX521 dipole woofer. It is part of the LXstudio design to achieve proper addition of the two outputs through the crossover region. The addition depends upon the frequency dependent magnitude and phase shift of the LXmini contribution and the LX521 dipole woofer contribution. Ideally they are in-phase and add to a flat response as LXstudio and dipole woofer output magnitudes vary due to the LR2 crossover filter used. The difference response indicates how the outputs of changing magnitude subtract. If the magnitudes are identical and 180⁰ out-of-phase an infinitely deep notch should be seen. The measurement is perturbed by environment reflections and power line harmonics. The sum and difference traces give a good indication as to how well the two output signals add in-phase and with correct magnitude.

*****************************************************************************************************