What is the primary material of the Celestion H1-9040P?

The H1-9040P is constructed from hard-wearing reinforced ABS plastic. This ensures the unit is durable enough for professional audio applications while remaining lightweight.

What type of flare geometry does this horn use?

It uses an exponential flare design. This specific geometry is intended to provide efficient sound loading and a balanced output level across the driver's frequency range.

What size is the throat exit?

The horn features a 25.1mm throat exit, which is equivalent to 1 inch. This is a standard size for many professional high-frequency compression drivers.

How is the compression driver mounted to the H1-9040P?

The horn is compatible with flange-fitted drivers. It features two M6 holes on a 76mm (3-inch) Pitch Circle Diameter (PCD) for secure attachment.

Does this horn include a compression driver?

No, the H1-9040P is a horn flare only. A separate flange-fitted compression driver must be purchased and bolted to it to produce sound.

Can I use this horn to replace a damaged horn in a PA speaker?

Yes, it is specifically designed as a high-performance replacement or upgrade. If your existing cabinet has the appropriate cutout and a compatible 1-inch flange driver, it is a suitable choice.

How does this horn affect the sound of a compression driver?

It helps maintain a balanced output level across the frequency range. The design ensures high frequencies remain clear and efficient rather than becoming muffled or inconsistent.

Is the H1-9040P difficult to install?

Installation is designed to be quick and simple. The compression driver bolts onto the back of the flare, and the entire assembly is then bolted into the speaker enclosure.

What is the typical price for this horn flare?

The H1-9040P typically retails in the range of approximately GBP 20. This makes it an affordable component for both repairs and custom loudspeaker projects.

Is this horn compatible with screw-on drivers?

No, the H1-9040P is designed for flange-fitted drivers using M6 bolts. Drivers with a threaded screw-on neck would require a separate adapter or a different horn model.

What are the benefits of reinforced ABS over standard plastic?

Reinforced ABS is more rigid and 'hard-wearing' than standard plastics. This reduces unwanted vibrations and resonances that could negatively impact the sound quality at high volumes.

Does the H1-9040P provide wide sound dispersion?

Yes, Celestion describes the unit as providing efficient sound and dispersion. The exponential shape is engineered to spread high-frequency audio effectively throughout the listening area.

Gear article

Celestion H1-9040P Exponential Horn Flare

The Celestion H1-9040P is an exponential horn flare designed to be paired with flange-fitted compression drivers to manage high-frequency dispersion and efficiency. Constructed from reinforced ABS plastic, it features a 1-inch throat exit and is engineered to maintain a balanced output level across a wide frequency range.

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Design and Construction

The Celestion H1-9040P is manufactured from high-grade reinforced ABS plastic, a material chosen for its durability and acoustic properties. The exponential flare geometry is specifically calculated to provide efficient sound loading and consistent dispersion patterns. By using hard-wearing synthetic materials, the horn remains lightweight while resisting the mechanical resonances that can sometimes plague thinner metal or plastic alternatives.

The physical architecture includes a 25.1mm (1-inch) throat exit, which is a standard dimension for professional high-frequency reproduction. The unit is designed for simple integration, requiring standard bolts to secure it to a speaker enclosure once the compression driver is attached.

Technical Specifications and Compatibility

For mounting, the H1-9040P utilizes two M6 holes positioned on a 76mm (3-inch) Pitch Circle Diameter (PCD). This configuration makes the horn compatible with a broad range of flange-fitted compression drivers from Celestion and other manufacturers. The primary function of this horn flare is to ensure that the output level of the connected compression driver remains balanced across its entire operating frequency range, preventing the 'beaming' or volume drop-offs that can occur with poorly designed flares.

Sonic Character

The H1-9040P is characterised by its ability to deliver clear and efficient high frequencies. Because it employs an exponential curve, it provides a smooth transition for the sound waves as they exit the driver, which helps in maintaining sonic transparency. It is designed to avoid artificial coloration, aiming instead to preserve the natural frequency response of the driver it is paired with while enhancing overall sensitivity.

Applications

This horn flare is primarily suited for: * Speaker Building and Repair: It serves as a reliable replacement for damaged or inferior horns in existing PA cabinets. * System Upgrades: Users looking to improve the sonic ability of a DIY or budget loudspeaker can use the H1-9040P to gain better high-frequency control. * Professional Audio: Its robust construction makes it suitable for touring or fixed-installation loudspeakers where durability is a priority.

Comparison to Alternatives

Compared to smaller or non-exponential horns, the H1-9040P offers a more linear response across the frequency spectrum. While rotary speakers like the Viscount Vortex 315 use specialized mechanical horn systems to create modulation, the H1-9040P is a static component intended for traditional point-source sound reinforcement. Its reinforced ABS construction provides a cost-effective yet high-performance alternative to expensive cast-metal flares without sacrificing significant structural integrity.

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Frequently asked questions

What is the primary material of the Celestion H1-9040P?: The H1-9040P is constructed from hard-wearing reinforced ABS plastic. This ensures the unit is durable enough for professional audio applications while remaining lightweight.
What type of flare geometry does this horn use?: It uses an exponential flare design. This specific geometry is intended to provide efficient sound loading and a balanced output level across the driver's frequency range.
What size is the throat exit?: The horn features a 25.1mm throat exit, which is equivalent to 1 inch. This is a standard size for many professional high-frequency compression drivers.
How is the compression driver mounted to the H1-9040P?: The horn is compatible with flange-fitted drivers. It features two M6 holes on a 76mm (3-inch) Pitch Circle Diameter (PCD) for secure attachment.
Does this horn include a compression driver?: No, the H1-9040P is a horn flare only. A separate flange-fitted compression driver must be purchased and bolted to it to produce sound.
Can I use this horn to replace a damaged horn in a PA speaker?: Yes, it is specifically designed as a high-performance replacement or upgrade. If your existing cabinet has the appropriate cutout and a compatible 1-inch flange driver, it is a suitable choice.
How does this horn affect the sound of a compression driver?: It helps maintain a balanced output level across the frequency range. The design ensures high frequencies remain clear and efficient rather than becoming muffled or inconsistent.
Is the H1-9040P difficult to install?: Installation is designed to be quick and simple. The compression driver bolts onto the back of the flare, and the entire assembly is then bolted into the speaker enclosure.
What is the typical price for this horn flare?: The H1-9040P typically retails in the range of approximately GBP 20. This makes it an affordable component for both repairs and custom loudspeaker projects.
Is this horn compatible with screw-on drivers?: No, the H1-9040P is designed for flange-fitted drivers using M6 bolts. Drivers with a threaded screw-on neck would require a separate adapter or a different horn model.
What are the benefits of reinforced ABS over standard plastic?: Reinforced ABS is more rigid and 'hard-wearing' than standard plastics. This reduces unwanted vibrations and resonances that could negatively impact the sound quality at high volumes.
Does the H1-9040P provide wide sound dispersion?: Yes, Celestion describes the unit as providing efficient sound and dispersion. The exponential shape is engineered to spread high-frequency audio effectively throughout the listening area.