Elektrostatska pod vakuumom

Air is the enemy of sound reproduction. This statement appears paradoxical — sound is, nakon all, a pritisak wave propagating kroz air. But the air između a slušalica driver and your eardrum nije transmitting the signal faithfully. To je filtering it. Air has mass, viscosity, and compressibility that vary with temperatura, humidity, and barometric pritisak. These svojstva uvesti a transfer function između the driver's dijafragma and your tympanic membrane that colors every frekvencija, prigušuje every transient, and adds a šumni pod of Brownian molecular motion that no pojačalo can remove because it originates nakon the pojačalo's output. The only way to eliminisati air distorzija is to eliminisati the air.

The Vakuum-Sealed Electrostatic encloses each ear in a sealed chamber evacuated to manje od 0.5 Pascal — roughly one two-hundred-thousandth of atmosferski pritisak. At this level of vakuum, the mean free path of remaining gas molecules premašuje the distance između driver and eardrum, which means postoji efektivno no kontinuiran medium između the two. Sound ne propagate kroz the vakuum in the konvencionalni sense. Instead, the driver's dijafragma is akustički coupled to the ušni kanal via a thin membrane at the inner površina of the earcup, which prenosi the dijafragma's motion directly to the rezidualni air in the ušni kanal bez the intervening atmosfera that would normally apsorbovati, reflect, and delay portions of the signal. The razlika nije subtle. Slušaoci consistently describe the iskustvo as hearing music "bez the room" — because, in a very real sense, they are.

The driver is a hybrid dizajn combining a corrugated aluminij ribbon element for frequencies iznad 3kHz with a platina-sputtered electrostatic panel for the midrange and bass. The ribbon element is 0.8 microns thick — thin enough that its mass is dominated by the signal struja flowing kroz it umjesto by the aluminij itself — and the corrugated profile pruža mehanički compliance bez the resonances that plague flat ribbon designs. The electrostatic panel radi at an 800V bias delivered by an energizer that shares the vanjski pump station kućište. The platina sputtering on the electrostatic electrodes was chosen over zlato because platina's work function proizvodi a more stable površina charge in vakuum uvjeti, where the absence of atmosferski moisture changes the electrostatic equilibrium of the dijafragma coating.

The closed-loop liquid cooling sustav circulates a dielektrik fluid kroz channels in the headband and earcup frames, maintaining the driver assembly at a constant 22°C bez obzira na the termički load from the slušalac's head. Termički stabilnost matters because the bias napon of an elektrostatički pokretač is temperatura-dependent — a 5°C increase shifts the operating point by približno 2V, which at 800V bias is enough to alter the dijafragma's resting position and uvesti a low-frekvencija offset in the output. The cooling sustav adds weight. The complete slušalica assembly is 1.8 kilograms. The 3-meter umbilical kabel carries the audio signal, vakuum line, and coolant supply in a single sheathed bundle that must not be bent ispod a 30-centimeter radius. A dedicated 20A electrical circuto je required. The pump station zahtijeva 15 minutes to postići operating vakuum. We recommend leaving it running kontinuirano tokom the listening season.