Technical data KA450

2 channel tone and speech audiometer

Class 2 tone audiometer according to DIN EN 60645-1

Class B-E speech audiometer according to DIN EN 60645-1 with free-field equalization for DD45 air receiver

13 frequencies from 125 Hz to 8 kHz, optional up to 20 kHz

• 125 Hz, 250 Hz, 500 Hz, 750 Hz, 1000 Hz, 1500 Hz, 2000 Hz, 3000 Hz, 4000 Hz, 6000 Hz 8000 Hz

Damping selectable "off", "manual" or "synchronous" to the test tone with

• Narrowband noise for the specified audiometric frequencies

• Broadband noise

• Speech masking noise

4 converter connections for

• Air duct

• Bone conduction

• Free field

• Aux (tweeter, plug-in headphones, ...)

Signal modulation

• Pure tone

• Pulse tone

• Wobble tone for free field

Integrated Freiburg language test on memory card

• Randomized single word selection

• Randomized group selection

• Speech counter with evaluation of intelligibility and discrimination loss

Signal input for voice tests from CD or PC (audioApp: voice from hard disk)

Tone-In-Noise Test / Langenbeck noise audiometry

• Superimposition of the test tone on the test tube

• Narrowband or broadband noise

• on all transducer outputs: Air, bone conduction, in free field and on Aux

Speech-In-Noise Test

• Superimposition of the speech signal on the test ear

• Speech masking or broadband noise

• on all transducer outputs: Air, bone conduction, in free field and on Aux

Suprathreshold tests

• SISI

• Lüscher

• Fowler (ABLB)

• Stenger

• Langenbeck with narrowband noise

• Carhart (Tone Decay)

• Tinnitus determination

  • with pure tones

  • with narrowband noise

  • Masking curve with narrowband noise or broadband noise

Large, ergonomic control unit

• Membrane keypad with closed surface

• Good disinfectability

• 2 high-quality, mechanically mounted rotary controls for level control

  • right / left ear

  • Stimulus / anesthesia

• Optional LED matrix

Integrated free-field amplifier

• No galvanic isolation required for active speakers

• up to 80 dB in free field

• up to 1m distance

• for use with https://hno.shop/collections/audiometrie/products/lautsprecher-jbl-control-one-paar-schwarz

Integrated patient communication

• Built-in intercom microphone for examiner

• Connection for examiner headset

• Connection for patient microphone

Galvanically isolated USB interface, no isolating transformer required

incl. accessories

• DD45 air receiver https://hno.shop/products/dd45-lufthorer-komplett-2-m-kabel?variant=44148190740747

• Bone receiver B71 https://hno.shop/products/x-b71-knochenhorer-komplett-mit-kopfbugel

• Patient hand switch https://hno.shop/products/patientenhandtaster-typ0801-6-3mm-mono-klinkenstecker?variant=44246703571211

• Mains cable

• Instructions for use