BEYMA TD-WL4
BEYMA TD-WL4 — Horn / Waveguide
90 W AES
Part no.: 42A-CHS-HW-BEY-0002
Documents
BEYMA TD-WL4 — Horn / Waveguide
90 W AES · 60 dB Sensitivity
Technical data
- Power handling: 90 W AES
- Weight: 1.5 kg
Series: TD · Part no.: 42A-CHS-HW-BEY-0002
Beyma TD-WL4: TD-series waveguide rated 90 W AES, 1.5 kg
Horn or waveguide? Beyma lists the TD-WL4 in its TD series under horns and waveguides, and the WL designation points to a waveguide construction – a part that relies less on acoustic gain through horn loading than on controlled, even radiation across the coverage angle. The TD-WL4 is rated at 90 W AES, weighs 1.5 kg and is intended for compression drivers from the Beyma range.
In modern PA design a waveguide is the answer to how an HF driver can match its directivity as seamlessly as possible to the mid driver below it: the pattern should be the same on both sides of the crossover so the off-axis response shows no step. That requires a properly computed profile and a body that does not resonate at 90 W AES of driver power – the 1.5 kg suggest matching substance.
Use and enclosure
The TD-WL4 belongs in two-way systems where the directivity at the crossover matters: tops for sound reinforcement, installation speakers, multi-box arrangements in which even coverage counts more than maximum sensitivity. The driver must match the waveguide's throat in exit diameter; as no datasheet PDF is on file for the TD-WL4, check exit size and mounting pattern in the 42.audio driver database before ordering.
In the crossover a waveguide demands the same care as a horn: high-pass steep and with margin above the compression driver's resonance, crossover frequency where the directivity of waveguide and mid driver line up. Equalisation is common, because a waveguide provides less loading in the upper range than a deep horn – a DSP or a passive HF boost is part of the design. The 90 W AES refer to the construction; the system's power handling is defined by the driver.
What to look out for
- Rated 90 W AES – designed for powerful Beyma compression drivers.
- Weight 1.5 kg: rigid body, needs a solid baffle and strong fixings.
- Waveguide concept: align directivity with the mid driver at the crossover, plan for EQ.
- Match the driver's exit size and mounting pattern in advance – no datasheet PDF on file.
Frequently asked questions
What distinguishes a waveguide from a classic horn?
A horn maximises acoustic loading and thus the driver's sensitivity, while a waveguide optimises the evenness of radiation across the angle. In practice a waveguide delivers less gain in the upper range but a smoother off-axis response.
Which driver fits the TD-WL4?
A compression driver from the Beyma range with the exit diameter of the waveguide throat and a power rating in the region of the 90 W AES. Check the throat in the 42.audio driver database.
Do I need equalisation with the TD-WL4?
In most cases yes. Waveguides load the driver less strongly in the upper frequency range than deep horns, so the response there typically needs a boost – via DSP or passively in the crossover.
At 42.audio you get the BEYMA TD-WL4 with all key data in the driver database. More drivers from this manufacturer: Atlas Beyma.
Specifications
| Allgemein | |
|---|---|
| Manufacturer | BEYMA |
| Category | Horn / Waveguide |
| Series | TD |
| Power handling (W) | 90 |
| Abmessungen & Korb | |
|---|---|
| Weight (kg) | 1.5 |