Headphones reviews

Description

Sony’s MDR-RF915RK RF Wireless Headphone System lets you move inside and outside your house and still enjoy music and TV sound, and lets you turn up the volume late at night without disturbing others. The MDR-RF915RK features a comfortable open-air type supra-aural headphone, easy rechargeable battery system, 3 transmission system to ensure optimum signal reception, and the AFM transmission system to resist static and distortion for higher fidelity.

Technical Details

• Wireless Design lets you move inside and outside your house and still enjoy music and TV sound, and lets you turn up the volume late at night without disturbing others
• 150 Foot Transmission Range for listening enjoyment upstairs, downstairs, and virtually everywhere in your home and outside in your backyard
• 900 MHz Radio Frequency (RF) Transmission provides better sound quality and greater
• 30 mm Diameter Driver Units are larger than many portable headphones for deeper bass, lower distortion, and wider dynamic range; low frequency response extends down to 20Hz
• PET Diaphragms ensure high rigidity for minimum distortion, and low mass for excellent high-frequency response
• Ferrite Magnets combine high energy and small size for ample sound output
• Comfortable Open-Air Type Supra-Aural Headphones fit securely for maximum frequency response reception
• Double Headband with self-adjusting mechanism conforms to the curve of your head for a snug fit
• Built-in Rechargeable Ni-Cad Batteries are more convenient than ordinary replaceable batteries, and when fully charged provide up to 23 hours of operating power
• Easy Rechargeable Battery System automatically charges the headphones when placed onto the transmitter
• 3 Transmission Channels Available helps ensure optimum signal reception; convenient sliding selector control on the side of the transmitter
• Automatic Power On/Off for both headphones and transmitter conserves battery life; transmitter turns on when it senses an input signal; headphones turn on when you place them on your head
• AFM Transmission System resists static and distortion for higher fidelity
• Complete Kit supplied includes transmitter, headphones, connecting cord, UniMatch plug adapter, and AC power supply
• Supplied Connecting Cord goes directly to headphone output of your high fidelity system for easy connection to hi-fi system, TV, or VCR
• RF Modulation: Frequency modulation
• RF Carrier Frequencies: Channel 1 — 913.5 MHz, Channel 2 — 914.0 MHz, Channel 3 — 914.5 MHz
• Effective Range: 150 feet
• Transmitter Power Requirements: AC 120 Vm 60 Hz when used with supplied AC power adapter which connects to the DC 9V jack
• Audio Input: Stereo L/R phono jacks, supplied 3 ft. connecting cord goes from stereo mini plug to L/R phono plugs, supplied UniMatch plug adapter converts stereo mini plug to stereo phono plug
• Headphones type: Open air, dynamic, wireless
• Driver unit: 30 mm diameter, dome type
• Diaphragm: PET
• Magnet: Ferrite
• Headband: Double band, self-adjusting
• Frequency Response: 20-20,000 Hz
• Power Requirements: Headphones: Ni-Cad battery, supplied, Transmitter: 9V AC with supplied adapter
• Battery Life Approx: 23 hours with fully charged Ni-Cad battery (built-in)
• Sensitivity: 105 dB/mW
• Impedance: 24 ohms at 1 kHz
• Tuning: Manual
• Volume: Rotary control
• Power Handling: Capacity 1000 mW (IEC)
• Weight: Headphones: 8-3/8 oz (240 g) w/battery, Transmitter: 6-2/3 oz (190 g)
• Dimensions (W x H x D): Transmitter: 6″ x 4-1/4″ x 6″ (150 x 108 x 150 cm)

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