Discover Knowles' smallest RAF series balanced armature drivers, delivering premium sound

Newsletter March 13th, 2018:

Logo Knowles

 

 

 

Discover Knowles' smallest RAF series balanced armature drivers, delivering premium sound

The RAF Series, including IPx7 models, enables premium hearable and earphone designers greater flexibility to improve critical features such as audio quality, connectivity, battery life, and water resistance without sacrificing size or comfort.

The small size of the RAF Series is an evolution of the successful RAB Series receiver with bottom terminals. It offers the same performances and benefits from high volume production and bottom terminals for an easy implementations on flex or PCB.

It produces a precise, full range sound in a small physical size and is available with two sound profile: sealed or with open back vent for enhanced bass.

 

RAF

 

RAF-32873-000 - vented

 

Key features:

  • like RAB-32257-000 with bottom terminals
  • Tuned vent for warm, yet precise bass and excellent treble

 

Specifications:

  • Sensitivity (@1 kHz):                 113,5 dB
  • DC resistance:                             22 Ohms
  • Impedance (@500Hz):              33 Ohms
  • Impedance (@1 kHz):                 50 Ohms
  • THD (1 kHz – 94dB):                   0,4%
  • max SPL (10% THD):                   117 dB
  • Port location:                               12S

RAF-32902-000 - not vented

Key features:

  • like RAB-32063-000 with bottom terminals
  • Not vented
  • IPx7 capable
  • Midrange / Tweeter in hybrid earphones
  • Bass profile can be electronically boosted
  • Level sound signature in standard earphone

 

Specifications:

  • Sensitivity (@1 kHz):                 113,5 dB
  • DC resistance:                             22 Ohms
  • Impedance (@500Hz):              33 Ohms
  • Impedance (@1 kHz):                 50 Ohms
  • THD (1 kHz – 94dB):                   0,4%
  • max SPL (10% THD):                   117 dB
  • Port location:                               12S

 

 

Temperatures far in excess of those that will damage the active elements are needed for soldering leads to the units.

It is therefore necessary to ensure that the heat is not transferred from the terminals to the interior of the receiver.

 

As solution provider, Seltech offers to solder wires on balanced armature receiver thanks to its trained soldering personnel (and proper equipment).

Don’t hesitate to contact us for such requirement.

 

RAF1

 

RAF2

 

 

About Seltech:

With 29+ years of experience, Seltech is a specialized international distributor and an added value solution provider with a wide portfolio of acoustic, capacitive sensing and RF products. With offices in France, Germany, China, Singapore and the United States, Seltech provides best-in-class support from design to production, helping its customers reduce time to market and overall costs. For more information, visit www.seltech-international.com

 

About Knowles:

Knowles Corporation (NYSE: KN) is a market leader and global supplier of advanced micro-acoustic, audio processing, and precision device solutions, serving the mobile consumer electronics, communications, medical, military, aerospace, and industrial markets. Knowles uses its leading position in MEMS (micro-electro-mechanical systems) microphones and strong capabilities in audio processing technologies to optimize audio systems and improve the user experience in smartphones, tablets, and wearables. Knowles is also the leader in acoustics components used in hearing aids and has a strong position in high-end oscillators (timing devices) and capacitors. Knowles’ focus on the customer, combined with unique technology, proprietary manufacturing techniques, rigorous testing and global scale, enables it to deliver innovative solutions that optimize the user experience. Founded in 1946 and headquartered in Itasca, Illinois, Knowles is a global organization with employees in 12 countries. For more information, visit www.knowles.com