MLTL-4 (above) - NBDesigns least expensive 2-way - tuned to 30Hz

We will be at AXPONA again this year - we are sharing Room 1202 with Geshelli Labs. Please stop by and listen!

We have completed a series crossover for the Sony SS-CS5; that sounds amazing. It costs ~$45-70 less to build than the parallel crossover, that has been our best seller! The manual has been updated - and if you purchased the previous version, but not yet built the crossover, email us and we can send the build information.

We are very happy to announce that you are now able to order assembled crossovers for all Neil Blanchard Designs speakers, and for the Sony SS-CS5 crossover! E-Zee’s Crossovers has “good/better/best” parts lists that are similar to our build manuals - all air core inductor coils, metalized film capacitors, and very low/non-inductive resistors.

If you want to build one of our mass loaded transmission line speakers, or upgrade your SS-CS5 speakers - but building the crossover was holding you back - then you have this option. Visit their website, and email them for a quote.

E-Zee’s Crossovers <elon@ezeescrossovers.com>

Old Guy Hifi reviewed our OG speaker - please watch, and leave a comment!

James at ABX Audiophiles built the MLTL-6 using our flat pack - please watch, and leave a comment!

MLTL-6 Dipole tweeter & Dome tweeter versions

Mass Loaded Transmission Line Loudspeakers

Build Manual Available Now & Baltic birch flat packs are also available, for several models.

The MLTL-6 mass loaded transmission line speaker, built with Baltic birch.

Build the MLTL-6 Speakers

A mass loaded transmission line speaker with a 6” paper cone woofer - in room response is essentially flat to ~32Hz.

”…arguably the best speaker kit available” - Cheap Audio Man

Build It

Build the Tower 6 Speakers

A slim tower mass loaded transmission line speaker with a 6” paper cone woofer - in room response is essentially flat to ~25Hz.

Build It

Build the MLTL-4 Speakers

A mass loaded transmission line speaker with a 4” paper cone woofer - tuned to a fundamental frequency of ~30Hz.

Build It

Build the WB4 Speakers

A slim monitor / stand mount mass loaded transmission line speaker with a 4” paper cone wideband driver - tuned to a fundamental frequency of 40Hz.

Build It

Upgrade your Sony SS-CS5 Speakers

Make a good speaker great.

Make It

Upgrade your Elac BS41-BK Speakers

Make an excellent speaker even better.

Make It

Upgrade your Elac DB5.2 Speakers

Make a very fine speaker even better.

Make It

Upgrade your Emotiva B1+ Speakers

Take them to a higher level.

Make It