The RP Driver At the heart of the RP series is the Regular Phase (RP) diaphragm driver, which uses copper foil etched polyimide film and a neodymium magnet. This is a unique planar magnetic (also known as orthodynamic) driver which Fostex claims has been redesigned to “achieve sharper audio reproduction for more accurate monitoring”. “The RP system is an electrically driven electro-acoustic transducer using a plane coil diaphragm… a surface driving system which actuates the whole surface of the diaphragm with the same phase… so constructed that entire diaphragm is evenly driven by supporting extremely thin plane coils of high density between pairs of powerfully magnetic circuits with identical poles opposed, through a unique holding method.” – original 1977 brochure. Redesigned low repulsion ear pad and head pad for maximum comfort Detachable cable for best serviceability 3.5mm stereo mini jack cable also included for portable audio player RP-Series Professional Headphones The Fostex RPmk3 series headphones are successors to the renowned RPmk2 series, which for more than 30 years (including from the start of the T-series) has been used as reliable monitor headphones by professional recording studios across the globe. The unique planar-magnetic (also known as orthodynamic) driver unit incorporates Fostex’s proprietary Regular Phase (RP) Technology diaphragm, which is delicately refined to achieve sharper audio reproduction for more accurate monitoring. The housing, ear pads, and head pad have also been redesigned both to derive the maximum performance of the RP driver, and provide maximum comfort for the listener. Refined Fostex proprietary Regular Phase (RP) diaphragm driver using copper foil etched polyimide film and powerful neodymium magnet The maximum input level of 3000mW to complies with various professional uses Specifications (T20RPmk3) Driver: Regular Phase (or Orthodynamic) Impedance: 50 ohm Sensitivity: 92dB (at 1kHz, 1mW) Frequency Response: 15Hz – 35kHz Maximum Input Power: 3000mW Weight: 315g Cable: Detachable 1/4” Stereo Phone (3m) and Stereo Mini (1.2m)
