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Desktop Head Fixture

AH 233

  • Desktop Head Fixture

  • The AH 233 is a test fixture specifically designed for consumer electronic headphones. It features realistic human ear simulators with an adjustable distance between left and right ear faces ranging from 13 cm to 24 cm, along with scale markings for reference. It offers extremely high test repeatability and precision. The fixture has a stable structural design and high operational repeatability. It supports interchangeable ear simulators with different hardness levels, and the hand-screw design enables quick and easy replacement.

    The actual purchase of the AH 233 unit includes only the metal stand and the human ear simulators (ER 808 L/R). It does NOT include the ear simulator CM 311 + A 804(≤33 dBA), the ear simulator SS 770-11 (low-noise floor type, ≤16 dBA), or the mouth simulator AM 581.


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Description

Specifications

Parameters

Height

336mm

Width

240mm

Length

240mm

Adjustable Width Range

130 - 240mm

Adjustable Height Range

271 - 336mm

Weight

≈4.8kg

Bracket Material

Aluminum Alloy

Ear Material

silica gel

Ear Hardness

20° Shore-A（Standard）
Optional ear simulator hardness0° Shore-A / 10° Shore-A
Ordering Information
PNModelDescription
900014-16AH 233Desktop basic head fixture, standard with one pair of conical ear canals ER 808 L/R (20° Shore hardness), one set of adjustable stand (Excluding mouth simulator and ear sensors )
990026-36ER 808-0Silicone ears simulator compatible with AH 233, hardness 0° Shore A, paired on both sides, recommended for ITU-TP.57 Type 3.3 ear canal
990026-37ER 808-1Silicone ears simulator compatible with AH 233, hardness 10° Shore A, paired on both sides, recommended for ITU-TP.57 Type 3.3 ear canal
900011-13CM 311+A 80433 dBA coupler, disc-shaped base, Type 711 configuration
900002-01SS 770-1116dBA acoustic coupler built-in microphone, front integrated, Type 711 configuration
900002-12SS 771-1112dBA acoustic coupler built-in microphone, front integrated, Type 711 configuration
900002-13SS 772-1110dBA acoustic coupler built-in microphone, front integrated, Type 711 configuration
900014-08AD 0211/2" Preamp L-type Adapter； For combination of AH 233 with SS 770-11, SS 771-11 and SS 772-11, AD 021 shall be adopted as a transition piece for installation on the head frame
920062-01AM 581Mouth simulator, with compensated output sound pressure of 94dB ± 0.1dB (100Hz-10kHz)

Dimensions

AH 233尺寸.png

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