ReShape Tweeter Waveguide, Acoustic Directivity Adapted to Psychoacoustic Tweeter Waveguide

Unlocking Consistent Directivity with ReShape© Phase Plug Technology

Phase Plug

We’ve developed a FEA-optimized phase plug technology called ReShape©. This innovative design allows tweeters to achieve consistent directivity (controlled sound dispersion) within OS horns.

Beyond Phase Shields: True Plane Wave Radiation

Unlike a simple phase shield, ReShape© doesn’t use and rely on diffraction to achieve constant directivity.

It transforms the tweeter’s radiation into a plane wave, similar to a 1-inch compression driver, or 1.4" for 29mm tweeters.

This allows the tweeter to operate effectively even beyond its natural radiation angle, adapting its coverage pattern to listening distance, resulting in superior control over sound dispersion.

Benefits of ReShape© Phase Plug Technology:

Elliptical Full Transition OS for Tweeter with phase plug

This design utilizes a 1-inch OS horn with a 90° x 60° coverage angle (other options are also available).

Elliptical transition from throat to mouth solve the negative effects of cross wavefront syndrome, a phenomenon that can cause unnatural sound coloration and inconsistencies in power response in high frequency.

The polar response respect optimal psychoacoustic performance as recommended by Dr. Floyd Toole, directivity should increase gradually from a certain point in the high frequencies.

The 15 and 17cm with (optional) full return side by side: Reshape WG
Attach system: Somasonus polar

It use an ogive and a special form bellow it, not visible on the picture, the load is specificelly “sent” where it’s needed due to FEA calculations and the add of the phase plug don’t add any accidents.

The SPL curve show a very smooth response without accidents and easy to filter (for a horn/Waveguide), as the waveguide have a constant directivity behavior it cannot be straight on axis, energy is not “create from nothing”, we distribute it and not waste it in a way.

   
90*60 waveguide: Somasonus polar raw    
   
100*70 waveguide: Somasonus polar raw    
   
SPL:
Somasonus polar raw    

How it compet versus Direct Radiation (no WG) and Somasonus

Direct radiation (no WG): Reshape WG
Somasonus (120° WG) in a box with round-over Somasonus polar

Comparing to direct radiation or competitor, ReShape Waveguide has a true constant directivity behavior, with a perfect plane wave radiation thanks to ReShape phase plug whitout any use of diffraction or midrange narrowing/beaming problems.

The loading capacities are superior and allow a easy passive filtering in more to reducing distortions and allowing greater maximum SPL.

Directivity is constant on both axis on ReShape Waveguide making the waveguide unsensitive to our vertical position (sitting or standing), we can also adapt coverage to listening distance, usually for our living room usage with a tweeter it’s beetween 100° and 90° horizontally as seen in our What horn should I use ? article.

Compatibility

Using a real Phase Plug to tweeter need some requirements, on shape and more. The overall size of mooving materials is also important as it define the throat size start of the phase plug and influence the directivity end.

The best compromise, even in terms of pure performances and price is the SbAoustics SB26ADC or CDC.

A new generation of tweeters in TeXtreme carbon has also emerged and allow more tweeter to be used when Beryllium tweeters tend to disappear or be more and more expensive.

Tweeter for 17/19cm WG crossover 1700/1500hz

Tweeter for 22/25cm WG crossover 1300/1200hz

Integration

On every horn the return is very important as we can see midrange narrowing and beaming article, our waveguide can be shipped with the full return or without.

Solutions for Time Alignment with passive filtering (so no delay in DSP):

Easy Tweeter Mounting: The couple tweeter and ReShape phase plug section is designed to be easily installed through the woofer hole.

Features

   
ADAPT ADAPT

Price and size:

Every price is with Phase Plug, in two part, horizontal coverage can be 90 or 100° , that make more sense for a listening in a living room even at short distance.

The horn can be provided with full return on 4 or 3 side for baffle integration and midrange narrowing & beaming removing.

: To order you can discover our horn versions and prices bellow then contact us here to proceed to payment and worldwide shipment.

5" waveguide (15cm) with ReShape phase plug :

6.5"/7" waveguide (17cm) with ReShape phase plug :

Recommended Woofer :

7.5" waveguide (19cm) with ReShape phase plug :

Recommended Woofer :

8" waveguide (23cm) with ReShape phase plug :

Recommended Woofer :

For bigger sizes X-Shape Horn with Compression Drivers are advised.