We had an excellent time at AXPONA - we shared a room with Geshelli Labs.


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 had a great time at Capital Audiofest again, sharing one of Geshelli Labs rooms! The great folks at Geshelli provided their Giuseppe preamps and Z-Blok monoblock amps; as well as their flagship Dayzee DAC!

We are pleased to announce the MLTL-4 build manual is available for purchase! This is the least expensive 2-way speaker in our planned model line - it uses a 4” paper cone midwoofer in a mass loaded transmission line cabinet, that is tuned to 30Hz. It has a 3/4” soft dome tweeter - both drivers are Dayton Audio units.

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