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Master hearing aid
capabilities
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The master hearing aid
is an important feature that's used to demonstrate the benefits of aided
amplification. Select four commonly used frequency slopes to approximate
hearing aid acoustics, and let your patients actually experience the
difference hearing aids can make.
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Two channel versatility
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The case is built tough
to withstand the bumps and knocks of daily use, yet it's remarkably
lightweight. The bright LEDs are readable in
any light, and the side control dials offer maximum comfort to reduce
operator fatigue. Integral storage provides ample space for all
accessories, including Audiocup headsets.
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Exceptional features
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The standard features
are out of the ordinary: ergonomic controls, separate insert phone jacks,
CD/tape input, monitor speaker, monitor/mic
headset and built-in amplifiers that provide you with ample power to
connect directly to your speaker system. Optional accessories that
include a free field system, talk-back mic and
insert phones make the MA 42 as powerful as some clinical audiometers on
the market today.
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ONE YEAR
LIMITED WARRANTY:
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This warranty is
extended to the original purchaser of the instrument, by Maico, through the Distributor from whom it was
purchased. The warranty covers defects in material and workmanship for a
period of one year from date of delivery of the instrument to the
original purchaser. Accessories which are purchased from Maico at the same time as the instrument are
warranted for one year from the date of purchase. For additional
information contact your Maico Distributor.
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Frequency Accuracy
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+/- 1% maximum
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Attenuator linearity
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+/- 5dB per 5dB step
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Rise / Fall time
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35 msec typical
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Distortion
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.5% typical, .2% maximum
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Frequency Modulation
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+/- 5% triangle wave modulation at 5 Hz
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Voltage Requirements
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117 volts AC
switchable
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Hearing level range
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Air
condition
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-10 to 110 dB HL
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Bone
conduction
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-10 to 70 dB HL
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Narrow
band noise
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-10 to 100 dB HL
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Master hearing aid
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SPL/gin
control
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15-65 dB gain in 5 dB
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Calibration
accuracy
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-/+ 3 dB SPL
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Input
cal. level
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0 VU corresponds to 60 dB SPL
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SSPL/masking
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55-100 dB SPL speech noise masking
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Slopes
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Flat, 6, 12 and 18 dB/octave low cut filters
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Dimensions
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12.5" W X 6.25" H X 15.5" D
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Weight
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16.5 lb / 7.5 Kg
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Part Number
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Part
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4687
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TDH39 Headset
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1162-417
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Audiogram pad
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2835
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B-71 Bone receiver with cord
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1037-37
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Bone headset
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5520
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Monitor headset with speech mic
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2169
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Patient response switch
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1162-9811
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Operating manual
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4790
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Insert phones (10 ohm)
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1025-352
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Patch cord
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6619
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Talkback microphone
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4695
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Audiocup headset
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5525
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Sound field kit
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CPT Codes
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992551
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Screening, pure tone
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992552
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Threshold, air
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992553
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Threshold, discrimination
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992555
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Air and bone
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992556
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Threshold, speech
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992557
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Basic comprehensive
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992590
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Hearing aid exam and selection, monaural
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992591
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Binaural
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992592
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Hearing aid check, monaural
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992593
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Binaural
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