Sennheiser A1 manual Switching on and off, adjusting the volume, Adjusting the frequency response

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The A 1 is a hearing amplifier for people who wish to improve their hearing only in case of need.

Switching on and off, adjusting the volume

The device is turned on and off and the volume adjusted by turning the knurled knob on the top (see illustration on last page).

The A 1 is equipped with an automatic gain control

If the wearer speaks or there is a loud noise, at the very same moment the volume is sharply reduced. Unpleasantly loud sound peaks are thus prevented, and the wearer’s own speech retains its natural sound. The automatic gain control is set in the factory to provide optimum comfort.

Adjusting the frequency response

Using the adhesive strips provided, the small holes in the receivers transducers can be closed. The frequency response changes depending on how many holes are covered in this way (see illustration on last page). If all holes are left open all sounds are balanced, to a considerable extent. If all holes are closed, primarily speech is transmitted.

Power supply

The A1 has an economical and environmentally-friendly power supply in the form of the BA 90 storage-battery module. Charging the battery provides approx. 10 hours of operation at medium volume. Longer operation is possible when a second battery module (accessories) is used. One of these at a time can be charged in the L 90 charger. Overcharging is impossible, so the battery module may remain plugged in over a longer period.

Technical data

 

Frequency range

100 - 12,000 Hz

Transducer principle

Dynamic

Microphone

Elektret microphone, mono

Acoustic amplification

approx. 30 dB

Characteristic sound pressure level

124 dB at 1 kHz

Operating time

approx. 10 hrs.

Weight

45 g

Scope of delivery (except for

1 A 1 hearing amplifier

supplementary package No. 03713):

1 plug-in charger L 90-220 or L 90-120

 

1 storage battery BA 90

 

4 adhesive strips

Subject to modifications

 

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Contents Page Stromversorgung Ein/- Ausschalten, Lautstärke einstellenDie a 1 ist mit einer Regelautomatik ausgestattet Frequenzgang anpassenTechnical data Switching on and off, adjusting the volumeAdjusting the frequency response Power supplyAlimentation électrique Mise en et hors service, réglage de la tonalitéLe a 1 est équipé d’un système de réglage automatique Adaptation de la courbe de réponseAlimentación eléctrica Conexión/desconexión, regulación del volumenEl A1 está equipado con un sistema de regulación automática Adaptación de la respuesta de frecuenciaStrömmatning In-/frånkoppling, inställning av hörstyrkaA1 är utrustad med automatisk reglering Anpassning av frekvenskurvanStroomverzorging In-/Uitschakelen, volume regelenDe A1 heeft een automatische regelfunctie Frequentiekarakteristiek aanpassenGain Control

A1 specifications

The Sennheiser A1 is an innovative wireless headphone model designed for audiophiles and everyday users alike, delivering an exceptional audio experience. Known for its outstanding audio quality, this model stands out in a crowded marketplace due to its blend of advanced technology and user-friendly features.

One of the primary features of the Sennheiser A1 is its superior sound performance, thanks to high-quality transducers that reproduce audio with remarkable accuracy and detail. The headphones deliver a balanced sound profile across various frequencies, ensuring that both lows and highs are well-represented. Whether you are listening to classical music or the latest pop hits, the A1 can reproduce the nuances and subtleties in the sound, providing an immersive listening experience.

The A1 incorporates Sennheiser's proprietary wireless technology, which ensures a stable and reliable connection. The headphones are equipped with Bluetooth 5.0, allowing for quick pairing and a dependable range. This enables users to enjoy their music without the hassle of tangled wires. Additionally, the battery life of the A1 is impressive, offering up to 30 hours of playtime on a single charge. Fast charging features also mean that users can get back to their music quickly, minimizing downtime.

Comfort is paramount in the design of the A1. The headphones feature plush ear cushions and an adjustable headband, ensuring a snug yet comfortable fit for extended listening sessions. This ergonomic design not only enhances comfort but also aids in passive noise isolation, allowing users to focus on their music without distractions from the outside world.

The Sennheiser A1 also comes with intelligent features that enhance usability. The integrated touch controls enable users to adjust volume, change tracks, and answer calls effortlessly with simple taps and swipes. Furthermore, voice assistant compatibility allows users to interact with their preferred digital assistant, making it convenient to manage tasks on the go.

In conclusion, the Sennheiser A1 is a remarkable headphone that embodies quality, technology, and comfort. With its exceptional sound performance, advanced wireless capabilities, and user-friendly design, it is a compelling choice for anyone looking to elevate their audio experience. Whether for casual listening or serious audiophile pursuits, the Sennheiser A1 undoubtedly meets and exceeds expectations.
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