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Coral 8F-60
Visaton TL8/C50F

Coral 8F-60 8 inch Fullrange Drivers

They are very few eight-inch drivers single cone, that can cover almost the whole audible band. Coral 8F-60 is one of them. This driver is popular in Europe, because it was re-branded by Visaton with the name TL8/C50F

Coral 8F-60 Fullrange Speaker Cone View Coral 8F-60 Fullrange branded as Visaton

This driver has an unique coating of the cone and cloth surround. On right there is a photos of the back label of an unit, branded as Visaton.

Coral 8F-60 Terminals Coral 8F60 Spider

The speaker is very well crafted. The magnet us huge with an underhung magnet system.

This is the the manufacturer's datasheet Link To Coral 8F-60 Manufacturer's Datasheet

This is the the datasheet from the German distributor Link To Coral 8F-60 German Distributor's Datasheet

My Measurements

Driver Properties Thiele - Small Parameters
Chassis material Aluminum alloy Die Cast    Parameter Measured Datasheet
Membrane material Paper Fs 42.5 Hz 45 Hz
Magnet System Ferrite Re 5.1 Ω 5.3 Ω
Surround Cloth Qms 5.45 4.57
Voice Coil Diameter 50 mm Qes 0.51 0.60
Nominal Impedance 6 Ω Qts 0.47 0.53
Sensitivity 93 dB/W/m Vas 46 ltr 51 ltr
Rated Power 40W Le 0.16 mH N/A

Coral 8F-60 SPL Responce at 1m on axis and 15 30 deg off axis   

Frequency response at 1m with 2.83 V input RED - on axis, BLUE - 15 º off axis, GREEN - 30 º off axis

Coral 8F-60 Second, Third and Fourth Harmonic in 18 ltr sealed box

The second, third and fourth harmonic curves measured at 2.83V input RMS. It is notable, that the SPL graph above 600Hz has a minor increase with increasing the input power.

Coral 8F-60 Burst decay Responce at 1m

Burst decay response, measured at 1m on axis

Coral 8F-60 impedance in 18 ltr seled box

The impedance curves BLACK - in a free air, BLUE - in 18 ltr sealed volume


There are two factory recommended designs for 8F-60 - the bassreflex and a back-loaded horn. The T/S parameters allow to be constructed an excellent TL construction as well.

Supravox Picola 2 Loudspeaker System Supravox Picola 2 Loudspeaker System

Both recommended constructions in details: Link To Supravox T215 RTF 64 Manufacturer's Datasheet

Some words about the sound. I listened 8F-60 in a sealed enclosure. The sound is solid, vigorous and melodic. The power capability is impressive. The usage of a supertweeter is a subject of a personal taste.

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