Celestion TF1225 12" Professional Speaker 250W

Brand:| Model: TF1225
The Celestion TF1225 12" loudspeaker driver delivers high fidelity, long-term performance when used in demanding sound reinforcement applications like stage monitors, compact main speaker boxes, and larger scale PA systems.
  • 12" bass and midrange driver providing 97 dB sensitivity and 250 watts RMS power handling
  • 2.5" high temperature copper voice coil wound on a polyimide former for increased reliability
  • Optimized ceramic ferrite magnet design reduces weight
  • Double half-roll surround for greater excursion control
  • For use in 2-way or compact 3-way systems
Part # 
Weight: 10.6 lbs.  
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List Price$127.49
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Part # 294-2078
Qty:  EA
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Product Details

Celestion TF1225 12" Professional Speaker 250W

Celestion's TF1225 12" speaker boasts high power handling and excellent efficiency, thanks to its optimized 42 oz. ceramic ferrite magnet, 2.5" copper voice coil, and vented pole piece. It delivers strong, smooth response to beyond 4 kHz, and delivers a strong bass punch in any type of enclosure. The TF1225 is intended for use in 2-way or 3-way pro loudspeaker systems.

Product Specifications
  • Nominal Diameter12"
  • Power Handling (RMS)250 Watts
  • Power Handling (max)500 Watts
  • Impedance8 ohms
  • Frequency Response50 to 4,000 Hz
  • Sensitivity97 dB 1W/1m
  • Voice Coil Diameter2.5"
  • Magnet Weight42 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)63 Hz
  • DC Resistance (Re)5.13 ohms
  • Voice Coil Inductance (Le)0.84 mH
  • Mechanical Q (Qms)6.7
  • Electromagnetic Q (Qes)0.54
  • Total Q (Qts)0.5
  • Compliance Equivalent Volume (Vas)1.92 ft.³
  • Mechanical Compliance of Suspension (Cms)0.14 mm/N
  • BL Product (BL)13.2 Tm
  • Diaphragm Mass Inc. Airload (Mms)46.51g
  • Moving Mass Of Diaphragm (Mmd)39.6
  • Maximum Linear Excursion (Xmax)2.5 mm
Materials of Construction
  • Cone MaterialPaper / Kevlar
  • Surround MaterialCloth
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter12.17"
  • Baffle Cutout Diameter11.14"
  • Depth5.12"
  • # Mounting Holes4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume1.18 ft.³
  • Sealed F3100 Hz
  • Vented Volume3.08 ft.³
  • Vented F349 Hz
Celestion TF1225 12" Professional Speaker 250W
  • BrandCelestion
  • ModelTF1225
  • Part Number294-2078
  • UPC739894531153
  • Product CategoryWoofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Weight10.6 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Celestion TF1225 12" Professional Speaker 250W

Product Q&A

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Celestion TF1225 12" Professional Speaker 250W

In a 3-Way speaker project im going to be using two of these running parallel for a 4ohm load these are rated at 250rms what will be the out come for the wattage will it still be 250rms or 500rms. i'll be using a premade 3way crossover?

Asked by: confusing
Two speakers whether in parallel or series will always double wattage, so you would have a 500 watt rating with two of these.
Answered by: MattP
Date published: 2014-05-08

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