OLLO Audio S4R 1.3 Calibrated (Closed)

Speaker

• Hand-picked and left / right matched transducers delivering accuracy and instrument separation. (+/-1dB SPL tolerance, pink noise, range 100Hz-10kHz in free field)
• 50 mm, PET 25u membrane, 2-layered coil, 32 ohms,
• Dynamic Neodymium speaker with 109dBSPL (S4X) / 111dBSPL (S4R) 1Vrms@1KHz 30ohm output that makes them work with smart devices too.
• Replaceable using home tools.

Acoustics

• Replaceable earpads with an outer diameter of 90 mm(3.5inch), an inner diameter of 55mm(2.2inch) and a depth of 20mm(0.8inch).
• Hybrid artificial leather and velour earpads to control flow resistance around the earpads seal resulting in smoother response in low mids and mids (150Hz-1kHz) perceived as natural timbre on vocals, pianos, strings,...
• 1kHz @ 85dBSPL sweep THD < 0.084%S4X / 0.079%S4R , Variation in frequency response in band from 20Hz to 20kHz ~13,7 dB SPL S4X / 10,0dB SPL S4R, pink noise IEC 60318-1 compatible standard.
• Fully separated front and back of the speaker for minimal phase cancellation and a more direct sound signature. SoundSeal™

Headband

• Self-adjusting artificial leather strap
• Clamping force set for most neutral frequency response on industry-standard bitragional diameter of 14.3cm (KEMAR)
• Stainless spring steel powder coated
• 360 earcups rotation
• Strap and steel are replaceable using home tools

Cable

• Detachable braided silicone cable employing OFC core to ensure minimal signal distortion.
• Colour labelled L and R (Left is Black)
• Reversible to have the cable coming down behind your back when playing an instrument or in front when producing with a desktop interface.