Citronic Sub Driver - 18" - 1200W
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Product Information
Full details
This guide is for audio professionals and enthusiasts seeking a robust 18-inch subwoofer driver for high-power applications. Its key benefit is delivering exceptional low-frequency performance and durability. A potential caveat is its specific design for sub cabinets, requiring integration into a suitable enclosure.
All features
| Model Part Number | RepC-118S |
|---|---|
| Brand | Citronic |
Extended Product Information
FAQs
What is the impedance of this subwoofer driver?
The impedance of this Citronic sub driver is 8 Ohms.
What is the RMS power handling capacity?
The driver has an RMS power handling capacity of 1200 Watts.
Can this driver be used in any speaker cabinet?
No, this is a specialized subwoofer driver. It must be installed in a subwoofer enclosure specifically designed for an 18-inch driver to perform correctly and safely. Proper enclosure design is crucial.
What is the frequency response range?
The frequency response is listed as 35Hz - 2kHz.
Is this driver suitable for home hi-fi systems?
While technically possible if integrated into a suitable enclosure with appropriate crossovers, it's primarily designed for high-power pro audio applications like PA systems and large venues. Its characteristics are geared towards significant low-frequency output.
What is the size of the voice coil?
The voice coil is 100mm (4 inches) in diameter and is an SV inside-out type.
Is this a direct replacement for a specific model?
Yes, it is a direct replacement for the Citronic C-118S sub cabinet.
Troubleshooting
No sound output
Check all speaker wire connections to the driver and amplifier. Ensure the amplifier is powered on and receiving an input signal. Verify the correct input and output settings on your amplifier and source. Test the driver with a known good amplifier and audio source.
Distorted or rattling sound
This often indicates the driver is being over-driven or is not properly mounted within the enclosure. Reduce amplifier gain. Check that all mounting screws are secure and that the driver is sealed correctly to the enclosure baffle. Ensure the enclosure is tuned appropriately and the driver is not being pushed beyond its excursion limits. Verify the audio signal is clean and not clipping.
Reduced bass output
Verify the driver is wired with correct polarity. Check that the enclosure is airtight (unless designed with ports) and that the driver is properly sealed to the baffle. Ensure the crossover frequency is set appropriately and the amplifier is providing adequate power. The enclosure's tuning may need adjustment if it's not matching the driver's characteristics.
Driver overheating
Ensure the amplifier is not clipping and is correctly impedance-matched to the driver. Avoid prolonged operation at maximum power if the amplifier is undersized. Ensure the driver is installed in an enclosure that allows for adequate airflow around the magnet and basket, especially if it's a sealed enclosure.
Pros and Cons
Pros
- High power handling (1200W RMS) for demanding audio systems.
- Durable construction with cast aluminium basket and reinforced suspension.
- Designed for professional subwoofer enclosures, including specific line array models.
- Large voice coil and magnet contribute to efficient sound reproduction and heat management.
- Direct replacement option for Citronic C-118S sub cabinets.
Cons
- Requires integration into a correctly designed subwoofer cabinet for optimal performance and safety.
- Impedance of 8 Ohms may require careful consideration for amplifier matching in multi-driver setups.
- Frequency response extends to 2kHz, which is higher than typical full-range drivers, necessitating a crossover.
- Detailed T/S parameters (e.g., Vas, Qts, Fs) are not provided in the basic description, which are crucial for enclosure design.
- Weight and size require appropriate mounting and handling considerations.
Setup, Compatibility & Care
Setup & Integration:
- Enclosure Design: This driver *must* be installed in a subwoofer enclosure designed for an 18-inch speaker. The enclosure's volume, porting (if any), and tuning frequency are critical for optimal performance and to prevent driver damage. Consult enclosure design software or professional guidelines based on the driver's T/S parameters (if available externally) for best results.
- Amplifier Matching: Ensure your amplifier is capable of providing sufficient clean power to the driver without clipping. The 8-ohm impedance should be considered when selecting an amplifier, especially when using multiple drivers in parallel or series.
- Crossover Network: A dedicated crossover is essential to direct low frequencies to the subwoofer and prevent damaging higher frequencies from reaching the driver. A typical crossover point for an 18" subwoofer is between 80Hz and 120Hz, depending on the main speakers.
- Wiring: Connect the driver to the amplifier using appropriate gauge speaker wire. Ensure correct polarity (+ to +, - to -) for each driver.
Compatibility:
- This driver is a direct replacement for the Citronic C-118S subwoofer cabinet.
- Compatible with amplifiers rated to drive an 8-ohm load at or slightly above its RMS power rating (1200W).
Care & Maintenance:
- Cleaning: Keep the speaker cone and surround free from dust and debris. Use a soft, dry cloth for light dusting. For tougher grime, a slightly damp cloth can be used on the cone, but avoid excessive moisture. Never spray cleaning agents directly onto the driver.
- Environment: Protect the driver from extreme temperatures, humidity, and direct sunlight when not in use.
- Inspection: Periodically inspect the speaker cone, surround, and suspension for any signs of wear, tears, or damage. Check wiring connections for security.