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LX - Loudspeaker Store

LXmini  --  LXmini+2  --  LXstudio  --  LX521.4

        

 

LX521.4

The LX521.4 exemplifies the best of what I have observed and learned in 50 years of experimentation about rendering stereo recordings in domestic living spaces. I love music. Life's circumstances prevented me from learning to play an instrument, but I make up for it by enjoying the creations of great composers and the art of musicians. I have designed speakers first of all for myself and free of commercial pressures. With the LX521.4 I have arrived at a level of performance, which makes me search no further. Instead I gratefully enjoy what I can hear. I excuse the recording/mixing engineer for his or her imprint and marginal acoustic scene capture, as long as the music still comes through. As hired engineers they work within a set of imposed limitations, one of which is the typical monitor loudspeaker.

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. 

The LX521.4 can be built DIY from a Kit for around $3300, including a miniDSP 4x10HD equalizer/crossover. Additionally, the speaker requires between 8 to10 power amplifiers of 50 W to 200 W. 

SL - 8/16

 

 

 

LX521.4 Construction Plans/License
and ATI Amplifiers from

www.linkwitzlab.com

LX521.4 Construction Plans/License .... $155
Plans/License is also required to purchase kits and assembled systems. 

AT6012 Power Amplifiers (12x 60W/ch) .... $1950
2x AT1804 Power Amplifier (8x 180W/ch) .... $2900 
AT1806 Power Amplifier (6x 180W/ch) .... $1850
+ AT1802 Power Amplifiers (2x 180W/ch) .... $1050
AT528NC Power Amplifier (8x 200W/ch) .... $3495
Alternatively provide ten power amplifiers (10x 50W/ch minimum & identical voltage gain for each channel, <0.03% dist.)

  Take a look at a Digital Stereo Sound System example
Check out your system and hearing with a Phantom Image Test

 

 

 

LX521.4 DSP Module from www.miniDSP.com

miniDSP 4x10 HD .... $499
miniDSP 4x10 plug-in / 96kHz processing .... $10
2-in analog, 2-in digital, 8-out analog, 2V, local knob and remote volume

 

 

 

LX521 Wood Kit from www.madisound.com

Flat-pack wood parts and related items .... $580
  • (2) LX521 Flat Pack cabinets
  • (36) OX8PAN1 Phillips head wood screws – enclosure assembly
  • (20) OXSOCKET6X3_4 Hex head wood screws – mount midrange drivers to baffle
  • (32) OXTNUT10-24 Socket head cap screws – mounting woofers to V-frame enclosure
  • (8) 1.5” x .75” steel inside corner braces - for woofer bridge
  • (16) Quick Connects for woofers, lower mids and upper mids
  • (4ft) 19 awg solid copper wire for tweeters – strip coating off ends, solder to tweeter tabs

      No SEAS drivers included ($1478)

                           

Contact: Adam Johnson     

Plans/License is required to purchase kits and assembled systems.  | Terms & Conditions |   

 

 

 

LX521.4 System Kit from www.madisound.com

LX521.4 Kit .... $2547
The LX521.4 Kit includes: 4-Woofers, 2-Lower midrange drivers, 2-Upper midrange drivers, 4-Tweeters, miniDSP 4x10HD, Flat-pack wood parts and related items ($580)
DSP with analog and digital inputs, and remote volume control. A separate preamp is not needed.
The DSP drives the 8x 150W or 10x 50W power amplifiers required for the system.

               

      

Contact: Adam Johnson 

Plans/License is required to purchase kits and assembled systems.  | Terms & Conditions |   

 

 

 

LX521 Wood Kit from www.magicLX521.com

50% pre-assembled LX521 Wood Kit .... €799 

Worldwide shipping: e.g. EU 55€ / US&CAN 159€ / world 199€

EU residents add 19% VAT 

Features:

  • CNC precision milled from best quality birch plywood 
  • Top baffles assembled and glued, hidden cables
  • Baffle supports assembled and glued
  • Bridges with hidden cable canals
  • Bridges with hidden stability bracket 
  • V-frame woofers with hidden cable canals in side panels  
  • V-frame woofer with 45deg front joints  
  • dowel joints avoid visible screws  
  • Internal cables  
  • Dowels, screws, screw clamp

Kit does not contain: electronic crossover/amp/amp-cables, paint, glue, plans/license from www.linkwitzlab.com.

 

     

   

  

Contact: Dr. Frank Brenner, info@magicLX521.com

Plans/License is required to purchase kits and assembled systems.  | Terms & Conditions |
Send proof of Plans/License ownership to <plans@magicLX521.com>

 

 

 

LX521.4 System Kit from www.magicLX521.com

50% pre-assembled LX521 Wood Kit, incl. 12 SEAS drivers .... €1799

Worldwide shipping: e.g. EU 96€ / US&CAN 319€ / World 399€

EU residents add 19% VAT 

Features:

  • CNC precision milled from best quality birch plywood 
  • Machine calibrated top baffle thickness
  • Top baffles assembled and glued, hidden cables
  • Baffle supports assembled and glued
  • Bridges with hidden cable canals
  • Bridges with hidden stability bracket 
  • V-frame woofers with hidden cable canals in side panels  
  • V-frame woofer with 45deg front joints  
  • dowel joints avoid visible screws  
  • Internal cables  
  • Dowels, screws, screw clamp

Kit does not contain: paint, glue, plans/license from www.linkwitzlab.com.

               

     

   

Contact: Dr. Frank Brenner, info@magicLX521.com

Plans/License is required to purchase kits and assembled systems.  | Terms & Conditions |
Send proof of Plans/License ownership to <plans@magicLX521.com>.

 

 

 

LX521.4 Electronics from www.magicLX521.com

 

DSP / Pre-amplifier / 8 Power-amplifiers

  

2x PowerBox 4400pro .... €4380
Everything between your CD-player and LX521 in two slim cases
LX521.4 requires one PowerBox per side, interconnected by CAT6 network cable
PowerBox 4400pro-MASTER ... €2190, and PowerBox 4400- FOLLOWER ... €2190
High-end Hypex DSP, preamp and 8x UcD400 power amplifiers on 1200W PSUs (Power Supply Units), 
analog and digital inputs, remote volume, or:

2x PowerBox 4180 .... €3780
dto. with 8x UcD180OEM on 400W PSUs.

2x Speaker Y-cable .... €349
Between PowerBox 4400pro and LX521, 
Two 5m cables with three "1-click” SpeakOn connectors per cable, 8x 2,5mm² conductors 

Worldwide shipping: e.g. EU 25€ / US&CAN 79€ / world 85€, plus 15€ insurance

EU residents add 19% VAT

  • The PowerBox 4400pro is a preamp with volume control, a 6-ch DSP with 6ch-DAC, feeding a 4-channel power amplifier in one slim but massive powder-coated aluminum top with brushed stainless steel front plate.
  • Digital inputs: RCA, optical, XLR, AES/EBU, USB
  • Analogue inputs: Two pairs of true balanced analogue inputs (RCA-XLR converter cables available)
  • Optimized, fully balanced internal system layout, allowing shortest signal traces, minimizing losses and artifacts.

NEW since 2016: 
PowerBox 6pro NCore
Master for LXmini+2 or LXstudio (€2490)
and with an additional PowerBox 6pro NCore Follower for LX521.4 (+€2490)  
See Burning Amp 2016 and Open House 2017 and PB 6pro PDF

Contact: Dr. Frank Brenner, info@magicLX521.com

Plans/License is required to receive pre-loaded LX DSP filters.  | Terms & Conditions |
Send proof of Plans/License ownership to <plans@magicLX521.com>, if already bought.

 

 

 

LX521.4 Turnkey System from www.magicLX521.com

 

LX521.4 Loudspeaker System .... €8990

Loudspeakers / DSP / Pre-amplifier / 8 Power-amplifiers

   

                            

 

The System consists of:

2x Loudspeakers

  • Top baffles and bridges are custom built in various precious veneer plywood types.
  • Choose your preference! Standard and popular selections are e.g. Bubinga, American Walnut, Paduk, Mahogany and Oak. Surfaces are finished by oil, or transparent lacquer (dull / silk gloss).
  • Upgrades to 3-layer massive wood types (e.g. Oak, Cherry, Walnut or Ash) or to Panzerholz possible.
  • Hidden cabling in all aspects.

2x PowerBox 4180
Everything between your CD-player and LX521 in two slim cases
LX521.4 requires one PowerBox per side, interconnected by CAT6 network cable
One PowerBox 4180 as MASTER and a .PowerBox 4180 as FOLLOWER.  
High-end Hypex DSP, preamp and 8x UcD180OEM power amplifiers on two 400W PSUs (Power Supply Units),
analog and digital inputs, remote volume

2x Speaker Y-cable 
Between PowerBox and LX521, 
Two 5m cables with three "1-click” SpeakOn connectors per cable, 8x 2,5mm² conductors 

 

NEW since 2016: 
PowerBox 6pro NCore
Master for LXmini+2 or LXstudio (€2490)
and with an additional PowerBox 6pro NCore Follower for LX521.4 (+€2490)  
See Burning Amp 2016 and Open House 2017 and PB 6pro PDF

 

Worldwide shipping of LX system in four parcels: e.g. EU 96€ / US&CAN 319€ / World 399€ / Insurance 60€ 
Due to weight restrictions per parcel, upper woofer drivers ship in a separate parcel and must be inserted by customer with 8 bolts&nuts. 
Inquire about alternative shipping as one 120kg airfreight pallet of fully assembled (all woofer drivers inserted) and tested loudspeakers: ca €800 to €1000 from Germany to the US.

Worldwide shipping of Electronics: e.g. EU 25€ / US&CAN 79€ / world 85€, plus 15€ insurance

Includes License/plan fee to www.linkwitzlab.com
EU residents add 19% VAT

 

  Mahagony

   Bubinga

   Walnut

  Walnut

          
3-layer massive oak, oiled      Paduck                                            Hidden cabling                     Top: black Panzerholz
                                                                                                                                                           Bridge: Makassar Ebenholz

  45 degree miters at bridge 

Contact: Dr. Frank Brenner, info@magicLX521.com

Plans/License is required to purchase kits and assembled systems.  | Terms & Conditions |
Send proof of Plans/License ownership to <plans@magicLX521.com>, if already bought.

 

 

 

www.linkwitzworks.com

 

 

 

LX - Loudspeaker Store

LXmini  --  LXmini+2  --  LXstudio  --  LX521.4

        

 

 

 

 

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: 02/13/2017   -  © 1999-2017 LINKWITZ LAB, All Rights Reserved