ReShape Tweeter Waveguide, Acoustic Directivity Adapted to Psychoacoustic Tweeter Waveguide

Consistent Directivity & True Plane Wave Radiation 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.

It also completely changes the behavior of the tweeter, even compared to a tweeter in a regular waveguide, in ReShape the driver operates with compression like a compression driver: The wavefront is compressed, as in a compression driver, and the radiation is now plane-wave, also as in a compression driver.

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.

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 100° 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 17cm version with his returns: Reshape WG
Attach system: Somasonus polar

It use an ogive and a special form bellow it that don’t add any accidents.

Horizontal coverage: Somasonus polar raw
   
Vertical coverage: Somasonus polar raw

ReShape waveguides offer a significant advantage in low-frequency performance. Their unique design, akin to a high-performance compression driver, delivers a 10 dB increased output below 9 kHz even compared to traditional waveguides.

Distortion measurements were conducted at 95 dB SPL EQ flat using a SB26ADC and the 17cm waveguide version:

distortion    

The waveguide’s constant directivity, characterized by a smooth, accident-free, curved on-axis response due its excellent loading properties and constant directivity energy distribution.

Somasonus polar raw    

This exceptional efficiency allows for seamless integration with low-frequency crossovers even in high-SPL applications.

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.

ReShape Waveguide directivity characteristics make 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, 100° or 90° horizontally is recommended 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.

A new generation of tweeters in TeXtreme carbon has also emerged and allow more tweeter to be used.

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

Tweeter for 20/26cm 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 waveguide includes a phase plug, which is screwed onto the tweeter using the original screws and onto the rear of the waveguide using the provided ones.

The horn features full returns on three (four or none, as needed) sides for seamless baffle integration. This effectively eliminates midrange narrowing and beaming.

The waveguide is 3D-printed using PLA for indoor applications or PETG-HF for outdoor use. It arrives ready to prime and paint, with layers of spray putty already applied for a smooth finish (as shown in the photo), ready to receive your primer and then paint.

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

All phase plug are now printed in MJF TopBlack:

6.5"/7.5" waveguide & phase plug:

Recommended Woofer :

8" waveguide & phase plug:

Recommended Woofer :

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