AC-4Ф Gold and Silver Version

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AC-40-001 back 1100.jpg
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AC-4Ф Gold and Silver Version

from 11,900.00

(Note: pricing is for a selected pair of drivers)

Designated with the cyrillic letter “Ф”, pronounced “Ef”, chess enthusiasts might also consider it the “queen” of our driver line-up. Plus a leather suspension for highest resolution.

Or, for those familiar with physics, aptly signifying both magnetic flux and the golden ratio.

The perfect driver for open baffle speakers or high-quality back-loaded horns like our famous Ampeggio or the 9.87 system.

Gold Version: Special goat leather surrounded wooden cone with Voxativ Endless Gap® technology.

Siver Version: Foam Surround and wooden cone

Frequency Response
20 - 20.000 Hz 

Efficiency Gold Version
97 dB (60Hz) / 106dB (5 kHz) 1W / 1m* 

Efficiency Silver Version
96 dB (60Hz) / 105dB (5 kHz) 1W / 1m* 

Capacity
50 W nom / 100 W mus 

Impedance
10,5 Ohm 

Qts
0,29 

Depth
3,0“ / 7,5 cm 

Diameter
7,5“ / 19 cm 

Weight
4,7 kg / 10,2 lbs

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PRODUCT LEAD TIMES // Upon payment, products are then assembled and packed with a typical lead time of 10 days for drivers, and 2 weeks for loudspeakers and field coil drivers.