CELESTION FTR18-4080FD
CELESTION FTR18-4080FD — 18" / 18 Zoll · Tieftöner · Ferrit
1000 W AES - 97 dB - 30 – 2500 Hz - 8 Ω
Art.-Nr.: 42A-CHS-TT-CEL-0020
Documents
CELESTION FTR18-4080FD — 18" · Woofer
18-inch, cast aluminium chassis, ferrite magnet LF driver
1000 W AES · 97 dB Sensitivity · Frequency range 30 Hz – 2500 Hz
Features
- Glass loaded paper cone with weather-resistant impregnation
- Optimised double suspension
- Airflow vented magnet assembly for dynamic heat dispersion
Technical data
- Diameter: 18 "
- Voice coil: 4 "
- Power handling: 1000 W
- Programme power: 2000W
- Sensitivity: 97 dB
- Impedance: 8 Ω
- Magnet: Ferrite
- Chassis: Cast aluminium
- Diaphragm: Glass-fibre reinforced paper (weather-resistant)
- Surround: Cloth-sealed
- Suspension: Double
- Voice coil former: Glass fibre
- Voice coil wire: Copper, round wire
- Weight: 9.8 kg
- Mounting depth: 205 mm
- Cut-out: 416mm / 16.38in
- Frequency range: 30 – 2500 Hz
Thiele-Small parameters
- Fs: 25.2 Hz
- Qts: 0.286
- Qms: 4.75
- Qes: 0.304
- Vas: 408.72 l
- Xmax: 8.5 mm
- BL: 22.81 Tm
- Re: 5.62 Ω
- Le: 1.5 mH
- Mms: 0.1778 kg
- Sd: 0.1134 m²
Datasheet (PDF) · Manufacturer page
Part no.: 42A-CHS-TT-CEL-0020
Celestion FTR18-4080FD: 18" woofer with 1000 W AES, 97 dB and Fs 25.2 Hz
If you are looking for an 18" subwoofer driver for bass reflex cabinets that combines extension with efficiency, the Celestion FTR18-4080FD is a candidate. The ferrite woofer in a cast aluminium frame offers 97 dB sensitivity, 1000 W AES power handling (2000 W programme) and a resonance frequency of just 25.2 Hz. The stated operating range runs from 30 to 2500 Hz; in practice the bass region is what matters.
The motor uses a 4" round copper wire voice coil on a glass-fibre former, a vented magnet system and a BL of 22.81 Tm. The glass-loaded, weather-resistant impregnated paper cone is guided by a double suspension that keeps the 8.5 mm Xmax symmetrical, and the cloth surround is sealed. With Qts 0.286, Qes 0.304 and a Vas of 408.72 l, the alignment clearly targets large vented enclosures; the Mms of 177.8 g is moderate for an eighteen with this resonance, which explains the high sensitivity.
Use and enclosure
With an EBP of 83, a sealed box would theoretically be possible at around 80 l with fc 62 Hz. For a subwoofer driver with Fs 25.2 Hz, though, that throws away extension. Bass reflex is the sensible route: the guide value is 169 l net volume tuned to 33 Hz, with an f3 around 38 Hz. That yields a PA subwoofer in the usual 18" format that stays within its linear excursion at full power, provided a high-pass is set below the tuning frequency. Work out port area and length with the enclosure calculator at 42.audio.
The FTR18-4080FD serves as a subwoofer under a top cabinet or as the bass section of a large 3-way system. You set the crossover to the next band in the bass region; the upper limit of 2500 Hz is far from becoming relevant. Installation needs 205 mm of depth and a 416 mm cut-out.
What to look out for
- 1000 W AES at 8 Ω: amplifiers in the 1000 to 2000 W range into 8 Ω, with a high-pass below 33 Hz.
- Vas 408.72 l: the driver wants a large vented enclosure, guide value 169 l.
- 9.8 kg and a 416 mm cut-out: plan for a solid baffle and handles.
- Mounting depth 205 mm.
- Xmax 8.5 mm with double suspension: efficiency takes precedence over extreme excursion.
Frequently asked questions
How does the FTR18-4080FD differ from the FTR18-4080HDX?
Both have 1000 W AES and a 4" coil, but the FD with Fs 25.2 Hz, 97 dB and Vas 408.72 l is designed for large vented boxes with maximum extension. The HDX offers more linear excursion at slightly lower sensitivity and a higher resonance and suits a different enclosure concept.
How low does the FTR18-4080FD go in a bass reflex cabinet?
As a guide value, f3 sits at 38 Hz in 169 l tuned to 33 Hz. For a PA subwoofer without DSP equalisation that is a good figure; with equalisation, be careful below the tuning frequency because excursion rises.
Which amplifier is appropriate?
1000 W AES is the continuous rating, 2000 W programme the upper end. A channel with that power into 8 Ω plus high-pass and limiter is the typical setup; at 97 dB you reach high levels even with less power.
Celestion FTR18-4080FD: manufacturer, spellings and classification
Celestion is the British loudspeaker manufacturer Celestion International Ltd. of Ipswich, England; its PA drivers are also known as Celestion Pro Audio. The FTR18-4080FD is a 18-inch woofer with ferrite magnet from the FTR series, available from 42.audio, Celestion dealer in Germany, with datasheet and full specifications in the driver database.
At 42.audio you get the CELESTION FTR18-4080FD with all key data in the driver database and the enclosure calculator. More drivers from this manufacturer: Atlas Celestion.
Specifications
| Allgemein | |
|---|---|
| Manufacturer | CELESTION |
| Category | Low Frequency |
| Series | FTR |
| Magnet | Ferrite |
| Impedance (Ω) | 8 |
| Power handling (W) | 1000 |
| Sensitivity (dB) | 97 |
| Frequency from (Hz) | 30 |
| Frequency to (Hz) | 2500 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 18 |
| Voice coil (inch) | 4 |
| Mounting depth (mm) | 205 |
| Weight (kg) | 9.8 |
| Thiele-Small-Parameter | |
|---|---|
| Re (Ω) | 5.62 |
| Le (mH) | 1.5 |
| Fs (Hz) | 25.2 |
| Qms | 4.75 |
| Qes | 0.304 |
| Qts | 0.286 |
| Vas (l) | 408.72 |
| Xmax (mm) | 8.5 |
| BL (Tm) | 22.81 |
| Mms (kg) | 0.1778 |
| Sd (m²) | 0.1134 |