German Physiks Borderland mkIV - AWARD WINNING, carbon DDD

Selling the Award Winning German Physics Borderland mk IV omnidirectional speakers.

Top specification model: with the optional carbon fibre DDD driver and a premium, high gloss finish.

Check out the outstanding reviews on 6moons.com, dagogo.com and in HiFi+:

HiFi+ (November 2016):
"The Borderland has all those properties we’ve come to expect from German Physiks loudspeakers, but more so. There’s that outstanding imagery, which is not limited to one place in the room. There’s also that fine top-tobottom coherence of sound, the extension and grace without an overtly ‘audiophile’ faux sound, and so on (...).

It’s hard to say where the Borderland Mk IV shines, because it is so
consistent (...).

(...) the German Physiks Borderland Mk IV represents an exciting, musically
energetic and live-sounding experience, more like the real thing than many loudspeakers."


- Alan Sircom

6moons.com (January 2015):
"Unlike mbl's big terribly inefficient omnis which, every time I've heard them at shows, sounded nearly too spectacular to be real, the Borderland MkIV goes for natural. It's not the over-the-top bombast of an IMAX movie that's high on 3D glasses. The biggest boon of this full-bandwidth omni radiation pattern is realistic tone(...)"

- Srajan Ebajen

Dagogo.com (August 2012):

"Stellar top-to-bottom coherency, speed and dynamics make for a solid foundation upon which the bass with its power, speed and pitch make it a bass-freaks’ master. The rest of the spectrum is just as well rendered with an infinitely open and detailed sound."

- Greg Petan

You can read the reviews in full on the German Physics website.

The Borderland Mk. IV, like all German Physics loudspeakers, is based on the DDD, a wide-bandwidth, omnipole driver.(The exact same DDD is used in all German Physics models.) The downward firing woofer has a 360 degree radiation pattern, which exactly matches that of the DDD.

The Borderland MK IV uses an octagonal cross-section cabinet constructed from heavy panels of MDF, with re-enforcements fitted to critical points within the structure. The use of an octagonal cross-section allows the individual panels to be made smaller and therefore stiffer than they would be if a conventional square or rectangular cross-section were used. Residual resonances are minimized by applying a special damping material called Hawaphon® to the inside of each panel. Hawaphon® is a polymer sheet containing a matrix of small cells filled with very fine steel shot and was originally developed as an anti-surveillance measure for use in military and government buildings. It adds mass to the panel to reduce the resonant frequency and the ability of the shot in each cell to move against each other provides a very effective way of converting vibration energy into heat. To damp resonances of the air within the cabinet, the whole of the inside of the cabinet is lined with a thick layer of high-density felt.

Another advantage of the Borderland MK IV design is that the DDD driver passes comparatively little potentially resonance-creating energy into the cabinet. This is because its low moving mass means that the reaction forces it generates are also low and because the DDD driver sits on top of the cabinet, these forces are at right angles to the direction that that cabinet panels would naturally flex. Consequently, less energy enters the cabinet than would be the case if the driver was attached perpendicular to a panel and thus the reaction forces it created were in the same direction that panel would naturally flex.

All woofers—and in fact, all drivers—have a resonant frequency. The top of the Borderland Mk. IV cabinet contains a Helmholtz resonator which is tuned to the resonant frequency of the woofer, thereby cancelling out the woofer resonance.

Speakers has been well cared after. I have found a small nick on one of the the pillars (see pic).

All enquires welcome and will be answered in full.

NO TRADES.

Speakers are located in Warsaw, Poland. I will arrange airport pickup.

Palletized shipping:
EU ~ 250 EUR US, Asia ~ $800

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