Beyma TD-1LR 1-Inch Cast-Aluminum Horn — Single

Beyma TD-1LR 1-Inch Cast-Aluminum Horn

If you already chose a 1-inch compression driver, the next mistake is treating the horn like a generic adapter. The horn controls how that driver actually delivers its output into the vehicle, and the TD-1LR gives you a cast-aluminum 1-inch platform when the build calls for a rigid horn body instead of a lightweight molded horn.

A compression driver by itself is not the complete high-frequency system. The horn provides the acoustic loading and physically shapes how the driver's output leaves the throat. That is why two systems using the same compression driver can behave very differently depending on the horn bolted to it.

The TD-1LR is a 1-inch-throat, cast-aluminum horn sold individually. That makes it relevant anywhere the system is being designed around a compatible 1-inch compression driver and the fabrication plan benefits from a metal horn body. The important buyer decision is not simply “does my driver have a 1-inch exit?” Throat size is only the first compatibility check. Bolt pattern, rear clearance, horn mouth size, intended coverage and actual aiming all have to work in the installation.

Why the horn matters as much as the compression driver

In a high-output system, it is easy to focus on driver sensitivity and power handling and forget what happens after the diaphragm moves. The horn is what couples that energy into the listening area. If the horn is aimed poorly or its coverage does not match the installation, adding amplifier power does not fix the problem. You can end up with a very loud hot spot in one seat and weak high-frequency information everywhere else.

That is especially important in motorcycles, Jeeps, powersports vehicles and open-air builds. The horn may need to project through wind and road noise, but it also has to cover the actual listening position. A horn chosen around packaging alone can make a system louder without making it better.

We would choose the horn and compression driver together, then design the panel around the complete assembly. That means checking how far the driver extends behind the horn, whether the horn mouth can be aimed where it needs to go, and whether the crossover plan matches the connected driver.

TD-1LR vs. TD-8060

The TD-8060 is the easier Beyma horn to choose when you specifically need a documented coverage pattern. Beyma publishes the TD-8060 as a 1-inch constant-directivity horn with 80° horizontal by 60° vertical coverage, a 1,500 Hz cutoff frequency and a compact 140 × 140 × 67.4 mm polycarbonate body.

The TD-1LR is a 1-inch cast-aluminum horn. Confirm its exact physical fit and intended acoustic application before fabrication; do not apply TD-8060 coverage, cutoff or dimensional data to it.

Choose the TD-8060 when known 80° × 60° dispersion and compact polycarbonate packaging are central to the design. Choose the TD-1LR when the build specifically calls for this cast-aluminum 1-inch horn and its physical fit and intended acoustic application have been confirmed before fabrication.

Where the TD-1LR makes sense

This horn belongs in a system where a separate compression driver is already part of the plan: fabricated motorcycle lids or fairings, custom Jeep and powersports panels, high-output doors, rear speaker panels and other builds where the high-frequency section needs controlled horn loading instead of a conventional dome or bullet tweeter.

It is not automatically the better answer for a normal daily-driver front stage. If the customer simply wants smooth high-frequency detail from a factory tweeter location, a conventional tweeter is usually easier to package and integrate. The TD-1LR starts making sense when output, projection and horn-loaded behavior are actual system requirements.

Likewise, this is not something we would add after the rest of the system has already been fabricated. Horn location and aim affect the crossover and tuning relationship with the midrange below it. The cleaner approach is to establish the high-frequency architecture first, then build the panel around the horn and driver combination.

How we would integrate it in a real system

The crossover is determined by the compression driver attached to the TD-1LR, not by the horn name alone. If the horn is paired with a driver such as the SPL30FE, the driver has a very different lower operating range than an SPL70FE. That means the same horn location could require a completely different crossover strategy depending on which compression driver is installed behind it.

With DSP, we would first protect the compression driver with the appropriate high-pass filter, then level-match the horn section to the midrange. From there, delay, polarity and EQ are used to make the acoustic handoff behave like one speaker system rather than a loud midrange with a horn added on top.

Placement matters before any of that tuning starts. If the horn is physically blocked by a seat, leg, door structure or fairing edge, DSP cannot create coverage that the hardware never delivered. The fabrication needs to give the horn a useful path to the listener.

The practical result: the TD-1LR gives a 1-inch compression-driver system a cast-aluminum horn platform for builds where the horn is being treated as part of the acoustic design—not just the piece that lets the driver bolt into a panel.

Manufacturer Specifications

Fitment note: confirm the exact compression-driver mounting pattern, horn dimensions, rear clearance and intended coverage before fabrication. Do not substitute dimensions or acoustic values from another horn.