CELESTION TF1225e
CELESTION TF1225e — 12" / 12 Zoll · Tieftöner · Ferrit
300 W AES - 96 dB - 50 – 3000 Hz - 8 Ω
Art.-Nr.: 42A-CHS-TT-CEL-0041
Documents
CELESTION TF1225e — 12" · Woofer
12-inch pressed steel chassis, ferrite magnet bass/mid driver
300 W AES · 96 dB Sensitivity · Frequency range 50 Hz – 3000 Hz
Features
- 12in mid/bass driver with extended low frequency response
Technical data
- Diameter: 12 "
- Voice coil: 2.5 "
- Power handling: 300 W
- Programme power: 600W
- Sensitivity: 96 dB
- Impedance: 8 Ω
- Magnet: Ferrite
- Chassis: Pressed steel
- Diaphragm: Kevlar-reinforced paper
- Surround: Cloth-sealed
- Suspension: Single
- Voice coil former: Polyimide
- Voice coil wire: Copper, edge-wound
- Weight: 4.4 kg
- Mounting depth: 139 mm
- Cut-out: 283mm / 11.14in
- Frequency range: 50 – 3000 Hz
Thiele-Small parameters
- Fs: 52.6 Hz
- Qts: 0.333
- Qms: 3.513
- Qes: 0.368
- Vas: 67.71 l
- Xmax: 5.25 mm
- BL: 17.66 Tm
- Re: 6.42 Ω
- Le: 1.32 mH
- Mms: 0.054 kg
- Sd: 0.0531 m²
Datasheet (PDF) · Manufacturer page
Part no.: 42A-CHS-TT-CEL-0041
Celestion TF1225e: 12" woofer with 5.25 mm Xmax for extended low end
The Celestion TF1225e is the low-frequency-oriented version of the 12" woofer from the TF series. The e stands for the extended response at the bottom: 300 W AES (600 W programme), 96 dB sensitivity and a working band of 50 to 3000 Hz. Compared with the base model the motor has been strengthened – BL 17.66 Tm – and linear excursion raised to 5.25 mm Xmax. The 2.5" voice coil is edge-wound copper, which packs more conductor into the gap and raises power handling.
Mechanically it stays with the pressed steel chassis, ferrite magnet, Kevlar-reinforced paper cone and cloth-sealed surround. Thiele-Small parameters: Fs 52.6 Hz, Qts 0.333, Vas 67.71 l, Mms 54 g, Re 6.42 Ω, Le 1.32 mH. The higher inductance explains the upper limit of 3000 Hz; this is more of a woofer than a mid/bass driver. Weight 4.4 kg, mounting depth 139 mm.
Use and enclosure
An EBP of 143 points to a vented alignment. Guideline: about 43 l tuned to 59 Hz, with f3 around 64 Hz. That is more compact than the TF1225 because the stronger motor pulls Qts down. Sealed, the guideline is 19 l with fc at 112 Hz. Work out the exact alignment including port dimensions with the enclosure calculator on 42.audio.
Sensible applications: the bass section of a two-way box whose tweeter can cross over low enough, or a small subwoofer or woofer in a three-way layout with a separate midrange. Place the upper crossover well below 3000 Hz. With 5.25 mm Xmax and 600 W programme the TF1225e copes with more bass content than the TF1225, but a high-pass below the tuning frequency still makes sense.
What to look out for
- Xmax 5.25 mm and BL 17.66 Tm: built for bass content, not for midrange finesse.
- Re 6.42 Ω at 8 Ω nominal; amplifiers of around 600 W into 8 Ω are a good match.
- Mounting depth 139 mm, cutout 283 mm, weight 4.4 kg.
- Le 1.32 mH: upper limit 3000 Hz – set the crossover accordingly low.
Frequently asked questions
Is the TF1225e suitable as a subwoofer driver?
For a compact subwoofer within the guideline range – 43 l vented, f3 around 64 Hz – yes. Real low bass below 50 Hz is not what a 12" with 5.25 mm excursion delivers; that is what the TSQ models are for.
How does the TF1225e differ from the TF1225?
More excursion, stronger motor, edge-wound coil and higher power handling, with slightly lower sensitivity and a lower upper frequency limit. If you need bass content, take the e model; if you want the midrange as well, take the base model.
Which amplifier suits the TF1225e?
300 W AES, 600 W programme. An amplifier with around 600 W into 8 Ω uses the driver fully. Make sure a high-pass sits below the box tuning so excursion does not run away below fb.
Celestion TF1225e: 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 TF1225e is a 12-inch woofer with ferrite magnet from the TF 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 TF1225e 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 | TF |
| Magnet | Ferrite |
| Impedance (Ω) | 8 |
| Power handling (W) | 300 |
| Sensitivity (dB) | 96 |
| Frequency from (Hz) | 50 |
| Frequency to (Hz) | 3000 |
| Abmessungen & Korb | |
|---|---|
| Diameter | 12 |
| Voice coil (inch) | 2.5 |
| Mounting depth (mm) | 139 |
| Weight (kg) | 4.4 |
| Thiele-Small-Parameter | |
|---|---|
| Re (Ω) | 6.42 |
| Le (mH) | 1.32 |
| Fs (Hz) | 52.6 |
| Qms | 3.513 |
| Qes | 0.368 |
| Qts | 0.333 |
| Vas (l) | 67.71 |
| Xmax (mm) | 5.25 |
| BL (Tm) | 17.66 |
| Mms (kg) | 0.054 |
| Sd (m²) | 0.0531 |