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