| Noise rejection | Depending on placement and acoustic surroundings.
20Hz-300Hz: 45dB-70dB
Above 300 Hz: 45dB-55dB |
| | Acoustic distortion | 100dB SPL at any frequency between 100Hz and 8kHz the typical distortion is:
2nd: < 0,05%,
3rd: < 0,3%
Lower distortion at lower intensities.
TDH at 70dB SPL: Too low to be measured by traditional techniques. |
| | Input | 1watt: 110dB SPL at test point.
Max input: 4.5 watts continuous.
40 watts short term. |
| | Impedance | Nominal 8 ohm. (Max. 25 ohm). |
| | Sound presentation | Via high quality loudspeaker |
| | Accuracy of hearing aid response curves | Determined by quality of reference microphone |
| | Frequency range | These specifications indicate typical performance, prior to any applied electronic correction.
50Hz - 8kHz ± 1.5dB.
-3dB points at 35Hz and 10kHz.
6dB/octave cut off below 35Hz.
24dB/octave cut off above 10kHz.
Neither slope suffers from disturbing resonance. |
| | Uniformity of sound field | In measuring area typically +1dB 20Hz-10kHz. |
| | Dynamic range | Available levels determined by specifications of connected equipment.
Upper limit: Above 110dB SPL continuous.
Lower limit: Determined by ambient noise level.
50dB SPL test level at 75dB ambient noise changes measurement less than 0.5dB.
35dB SPL test level at 70dB ambient noise has a signal to noise ratio exceeding 10dB. |
| | Acoustic environment | Approximates to Free Field conditions above 500 Hz. Horizontal sound radiation. |
| | External / internal connections | Reference microphone, coupler, battery adapter, loop, 2 x auxiliary, speaker, additional cables through sound proof passage |
| | Dimensions (LxWxH) | 40x36.5x26 cm/15.7x14.4x10.2 inch |
| | Weight | Net weight: 22 kg/48.5 lbs. |
| | Included parts | 3 TCC25 connection cables
1 TCL25 loop connection cable
1 TSC25 loudspeaker cable
Cable kit for TBS25/Affinity2.0 or Equinox2.0
CE manual
Operation manual |
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