Sennheiser's Cloak of Silence - PXC 450

10 mai 2007


Communiqué de presse

Using new technology and their High-end Hi-fi design skills, Sennheiser leapfrog the competition to deliver the World’s best noise-cancelling headphones.

Built to deliver the highest quality sound possible, the PXC 450s allow travellers to privately enjoy their own music, wrapped in a virtual ‘Cloak Of Silence’ however noisy a train or plane might be. And no sound leaks out, so fellow passengers stay happy.

In addition Sennheiser has analysed the problems afflicting other noise-reduction headphones and fixed them.

1. PXC 450s work as headphones even if the batteries die
2. One tiny and globally available AAA battery gives 20hrs use
No charger to carry or expensive spare batteries to buy
3. UNIQUE Active ‘TalkThrough’ button lets you hear conversations and announcements, without having to rip the phones off your head
4. The sound is clear and balanced with no heavy bass or muffled vocals

The advanced NoiseGard 2.0 electronics
- Sennheiser NoiseGard 2.0 electronically removes 90% of noise (more than ever) taking out the drone and roar of engines, rails etc
- Exceptional passive noise-reduction from the closed-back design takes out voices, kids, mobile phone shouters and general noise
- Electronics and battery all inside the headphone, nothing dangles
- Ideal for planes, trains, tube and other noisy environments
- Noise leakage OUT is eliminated – stop irritating fellow travellers

- Ultra energy efficient with over 20hrs from one AAA battery
- No charger or spare battery to carry – AAA batts globally available
- Bypass switch turns off NoiseGard electronics for normal use
- Unlike key competitors, still works as a headphone even with no battery

WORLD FIRST Feature: Active ‘TalkThrough’ Button
- Unique Active ‘TalkThrough’ button to hear conversation / stewardess
All headphones block other people, but sometimes you need to talk

TalkThrough a. Turns your music down to a preset level you choose b. Opens a voice channel in the NoiseGard electronics so you can converse c. Retains full noise-reduction operation so you can hear clearly The result, tap once to talk naturally, tap again to return to music Order a Bloody Mary without having to take your headphones off

- All controls in one easy-access cluster on the right capsule
- Touch-button Electronic volume control on the headphones no need to grope for your iPod or MP3 player
- Soft fade-in and fade-out with power switch

Built like Sennheiser Hi-fi headphones
- Serious Hi-fi sound in advance of all other noise-cancellers
- Drivers and audio technology from Sennheiser best Hi-fi range
- Sennheiser patented Duofol diaphragms for clarity
- Adaptive baffle damping for deep bass

Smartly packaged
- Stylish luxury design and tough ‘travel-proof’ construction
- Exceptional comfort with ultra-soft earpads and over the ear design
- Fold flat design for travel use
- Supplied with moulded travel case and airline adapters
- UPDATE Compact bundle folding mode for smallest size without case
- UPDATE Detachable cable removes for sleep/rest mode (or servicing)

Tech stuff
Two key features from Sennheiser Hi-fi ensure good sound

- Adaptive baffle damping guarantees consistently good bass.
- The patented Duofol diaphragms prevent unwanted resonances, guaranteeing crisp, crystal-clear sound.

Sennheiser pioneered consumer noise-reduction headphones
over 20 years ago and have unparalleled expertise in this technology

- NoiseGard noise-cancellation technology actively neutralises unwanted noise: a tiny microphone mounted on the outside of the headphone picks up ambient noise, a processor calculates and superimposes the relevant phase inverted sound.

The result: the two acoustic signals cancel each other out and the unwanted noise no longer reaches the user’s ear. The new NoiseGard 2.0 uses optimised circuitry design and even more efficient processors. It also uses better quality microphones, which enable more sophisticated pick-up of unwanted noise. Specially developed filter algorithms enable improved active noise compensation of up to 90% (23 dB).

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