Speaker - Celestion, 12", T.F. Series 1225E, 300W, 8Ω

Speaker - Celestion, 12", T.F. Series 1225E, 300W, 8Ω

Speaker - Celestion, 12", T.F. Series 1225E, 300W, 8Ω image 1
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Speaker - Celestion, 12", T.F. Series 1225E, 300W, 8Ω image 1Speaker - Celestion, 12", T.F. Series 1225E, 300W, 8Ω image 2
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Special Order Item

T.F. Series 1225E is a high powered 12" speaker suitable for many PA applications and in 2-way and compact 3-way systems. This bass and mid range driver has an extended low frequency response and features an edge wound voice coil for high efficiency and power handling.

Item ID:
Celestion Part Number:
CelestionCelestion T.F. Series
Magnet Type:
RoHS Compliant
Product Measurements by Type
Chassis TypePressed steel
Coil MaterialEdge-wound copper
Cone MaterialKevlar-loaded paper
Cut-out Diameter283 mm
D260 mm
Diameter12 in.
Diaphragm/Coil Mass (Mmd)46.31 g
Electrical Q Factor (Qes)0.44
Equivalent Acoustic Volume (VAS)50.6 liters
Force Factor (BxL)15.41 Wb/m
Former MaterialPolyimide
Frequency Range50 Hz - 3,000 Hz
Gap Depth8 mm
Magnet TypeFerrite
Magnet Weight50 oz.
Maximum Linear Displacement (XMAX)3.5 mm
Mechanical Compliance (CMS)0.13 mm/N
Mechanical Moving Mass (MMS)53.24 g
Mechanical Q Factor (QMS)4.80
Mechanical Resistance of Driver (Rms)4.27 kg/s
Mounting Hole Bolt Circle Diameter297 mm
Mounting Hole Diameter7.9 mm
Mounting Slots4
Nominal Diameter12 in.
Nominal Impedance8 Ω
Overall Depth139 mm
Overall Diameter309 mm
Power Rating300 Wrms
Resonance Frequency (ƒS)61.2 Hz
Sensitivity96 dB
Surround MaterialCloth-sealed
Total Q Factor (QTS)0.40
Voice Coil DC Resistance (Re)5.07Ω
Voice Coil Diameter2.5 in.
Voice Coil Inductance @ 1 kHZ (LE)1.1 mH
Voice Coil Winding Width14.5 mm
Packaging Information
Packaging Dimensions12.875 in. × 13.375 in. × 6.25 in.
Weight (Packaging)11 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet146.37 KB

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Product Reviews

5.00 out of 5 based on 2 reviews
Rann - March 28th, 2021
5 out of 5

Used in home audio. Stereo analog. Housed in two way box with horn tweeter. This speaker rocks! Warm and well rounded tones. This will make your record collection come alive. Born from a guitar amp this speaker has the range and power needed for PA or DJ or home.
Can’t get over how good these sound in stereo with a good recording. Get out your record player and prepare your neighbors for the live experience.

Loren Syrjala - September 7th, 2020
5 out of 5

Great speakers. Better than what I expected. Great service and the best price I could find anywhere.