Carbon MK IV,
Omnidirectional Loudspeaker

Reference Series

Award Winning Loudspeaker

The Carbon Mk IV is the latest version of another long running German Physiks design. Finished in high polish carbon fibre with a deep, clear lacquer coating,  it is a luxury version of the Borderland Mk IV, using the same crossover and cabinet, with a single DDD driver and a downward firing 12-inch woofer. Like the Borderland, the Carbon MK IV produces exceptional dynamics and resolution, together with the German Physiks hallmark musicality and three-dimensional stereo imaging.

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Designed for a lifetime of listening pleasure

As you would expect from a German product, the quality of construction and reliability are first class. We use the same quality of parts in the Borderland as in our reference products, where we design for a minimum life expectancy of 25 years.

Meticulous care and attention are paid during manufacture. Prior to assembly all components and materials are subject to a rigorous inspection. We also carry out detailed inspections at each stage of the manufacturing process. We can afford to do this as we build our products by hand in small batches. After assembly, the performance of each loudspeaker is measured. It is then burnt-in for at least 12 hours and then measured again. Once the burn-in process is complete, each loudspeaker is given a final detailed physical inspection before being packed.

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Finish Options

The sides of the Carbon MK IV’s loudspeaker cabinet are covered with several layers of bi-directional, resin impregnated carbon fibre, which are applied using techniques originally developed for the aircraft industry. Several layers of clear lacquer are then applied on top of this. Each layer has to be allowed to fully harden before it is hand polished and the next layer applied. This has to be done with great care and is a time consuming process, but the end result is a truly luxurious finish. All other parts of the Carbon Mk IV are finished in high polish black polyester.

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Impedance 4 ohms
Frequency Response 28 – 24,000Hz
Power Handling Nominal 300W / Short term 600W
Amplification required Minimum 160W/4 ohms
Crossover frequency 190Hz
Crossover slopes
DDD section 12dB/octave electronic & 18dB/octave acoustic
Woofer section 12dB/octave electronic & 18dB/octave acoustic
High frequency adjustment -2dB, flat, +2dB and +4dB centred at 8,000Hz
Sensitivity 86.1dB for 1W at 1
Operating principle 2-way loudspeaker with 360° surround radiation using the German Physiks DDD driver
Input connectors 2 sets of WBT nextgen™ binding posts
Drivers 1 x carbon fibre DDD driver / 1 x 12-inch woofer
Recommended room size 15 - 90 square metres / 160 – 950 square feet
Finish View
Dimensions 404mm W x 1,229mm H x 404mm D (15.9" W x 48.4" H x 15.9" D)
Weight 54kg / 119lbs
Warranty 5 years

As part of our process of continually improving our products, we reserve the right to change specifications without notice

DDD Loudspeakers Models