----- Experience in your own room the magical nature of stereo sound -----



What's new


LX - Store




with Fitz





The Magic in 2-Channel Sound

Issues in speaker

Dipole models

Active filters

Amplifiers etc





Room acoustics

Stereo Recording and Rendering

Audio production




Your own desig












dipole speaker

Three-Box active
system (1978)



& Room




Sound recordings


Other designs

My current setup

About me

Site map




Digital Photo


Sea Ranch


My Daughter
the Jeweler


What's new


LX - Store


with Fitz






    | Introduction | Specifications | Construction | Electronics | Supplies | Photos | Pluto-2.1


Photo Gallery

PLUTO has been built in many parts of the world:
Australia, Austria, Belgium, Brazil, Bulgaria, Canada, China, Croatia, Denmark, Finland, France, Germany, Greece, Hong Kong, Iceland, India, Indonesia, Ireland, Italy, Japan, Luxembourg, Malaysia, Monaco, Netherlands, New Zealand, Norway, Philippines, Poland, Portugal, Russia, Scotland, Singapore, Slovak Republic, Slovenia, South Africa, Spain, Sweden, Switzerland, Taiwan, Thailand, UAE, UK, USA (AK, AL, AZ, CA, CO, CT, FL, GA, HI, ID, IL, IN, KY, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NM, NY, OH, OK, OR, PA, SC, TN, TX, UT, VA, VT, WA, WI, WY).

Note that for privacy reasons I cannot give you the name of someone in your area, who you might want to visit, so you can listen to their PLUTO system. Try to make contact with a willing person via the ORION/PLUTO/LX521 Forum.

 Send me your photos of PLUTO to show others how you adapted it to locally available construction materials and to your life style.




C.K. Chan, Canada



                Hans J. Klarskov Mortensen, Denmark - PLUTO 2.1+



"Building the Pluto-2.1 was a great project. I had no prior experience with a soldering gun but thanks to the instructions and a knowledgeable friend it all worked out. The sound of the Pluto-2.1 delivers exactly what is described on the website and by other builders. After spending a lot of money over the years on Hi-Fi these little speakers are all one really needs. Plug them in, forget the gear and enjoy the music. They are very good at creating the stereo illusion in a variety of settings and acoustics. They are enjoyable to listen to from any seating position and are truly revealing in the sweet spot. They are easy on the ears for long periods of listening and contrary to more complex and expensive set-ups I find them more forgiving on less than perfect recordings. The fact one can throw them in the car to demonstrate anywhere with any device is icing on the cake. I will certainly build other Pluto's (for the office, the workshop, the garage...)"
JP Schroeder , Canada



                            Ed DelMonte, CA 





PLUTO-2.1 System made in China for the domestic high-end audio market. Pipes and enclosures are made from Aluminum. Four power amplifiers, line level analog crossovers and equalization are combined with a stereo preamplifier and input selector in the same enclosure. They can be operated by remote control. www.linkwitzworks.com  - - Review by "Hifi Pig"

These speakers are also available in the UK from www.plutospeakers.co.uk. - - Reviews by www.6moons.com and www.hifiwigwam.com




                    Stephan Oberholzer, South Africa




Marcin Sobocinski, Poland
Aluminum alloy pipes, damped with mass loaded vinyl






Konrad Hanten, Sinnl & Hanten GmbH, Austria




Stephan Oberholzer, South Africa --- Class D power amplifiers of his own design integrated with PLUTO xo/eq on SMD circuit boards






Ruediger Rauskolb, Spain

Inspired by omni and dipole performance after having built ORION, PLUTO, LX521, NaO Note II RS, Nathan, and purchased Duevel Venus.

The dipole woofer was later replaced by the PLUTO+ sealed box woofer for greater output.

Vifa tweeter in waveguide
Scanspeak 10F high mid in open baffle
SEAS Excel W15 low mid in sealed pipe
SEAS L16RN-SL (2x) woofer in open H-frame
miniDSP 2x4
Behringer NU1000 amps



Randy Bernardi, CA


The ABS tubes were finished with Valspar Patina Glaze over spray paint.
The finish on the bases is Martha Stewart Textured Metallic. Both were sponged on,
easy to apply, and give a professional appearance.



Clinton Yiu, Canada



Günter Garger - handwerk holz & stahl, Austria



   Martin Maeklin, Finland




"I have a new house. The main room sports lots of glass, is 18.5' x 30' including the kitchen w



Konrad Hanten
Sinnl & Hanten GmbH, Austria




'windjammer', Thailand




Mike Lambert, MA   more pictures




Gregg T., NY



Kentaro Kumagai, Japan - https://www.facebook.com/daredevils36kk/notes



Martin Coté, Canada



Ed Ryan, IL



"Paul Wooferwitz", NH


Brian Lenharth, AZ



Paul C., Singapore                                                     Low profile electronics


     Wave Science Technology, 2010



Nebosja Zdravkovic, Belgium



                       Michael Monahan, CT



Dominik Juergen-Lohmann, Singapore


Bidibidi's Holiday present, Switzerland



Keith Morgan, UK



Rafal D., NY



Robin Grinnall, UK



Zoran Ruzic, Slovenia,

(more pictures in albums.aspx)



Woofer top made from PVC coupler and two MDF rings

Carl Holgers, Stockholm, Sweden

Machined cooling section accommodates filter capacitors



Paul Schelin, MN


Jay Panicker, Bangalore, India (construction)


Nick, Hong Kong   (built by Wood Artistry)



Johannes, Peter, and Christian, Austria





Wave Science Technology, UK



Sverre Holm, Norway


Bill Schneider, OH


Leon Ford, UK
The base was made to look like Granite


   Simon Dick, Australia
   Two thin pipes each with sand fill in-between


Hans-Juergen Voigt, Germany,
and the local competition


Kurt Gregory, ID


Konrad Hanten, Austria


David Reite, WA


Charles, Wander, & Marcio's Pluto design, Brazil





Greg DeKors, OH



Steven Hill, Singapore



Johannes Stein, CA


PB, England


My own at Sea Ranch, CA, vacation home



    | Introduction | Specifications | Construction | Electronics | Supplies | Photos | Pluto-2.1



What you hear is not the air pressure variation in itself 
but what has drawn your attention
in the streams of superimposed air pressure variations 
at your eardrums

An acoustic event has dimensions of Time, Tone, Loudness and Space
Have they been recorded and rendered sensibly?

Last revised: 02/15/2023   -  © 1999-2019 LINKWITZ LAB, All Rights Reserved