AH 231L+AH 231R

Ear & Cheek Simulator
The AH 231L is paired with a left ear simulated auricle, and the AH 231R is paired with a right ear simulated auricle.
The standalone AH 231L and AH 231R units purchased separately do not include the coupler kit.

Specifications

Optional coupler kit models
	SS 770-11+AD 022+AD 021	SS 771-11+AD 022+AD 021	SS 772-11+AD 022+AD 021
Frequency response of pressure field microphone	20Hz – 8kHz ± 0.5dB 8kHz – 16kHz ± 1dB	20Hz – 8kHz ± 0.5dB 8kHz – 10kHz ± 1dB 10kHz – 16kHz ± 2dB 16kHz – 20kHz ± 3dB	20Hz – 8kHz ± 0.5dB 8kHz – 10kHz ± 1dB 10kHz – 16kHz ± 2dB 16kHz – 20kHz ± 3dB
Noise floor	<16dB(A)	<12dB(A)	<10dB(A)
Dynamic range	16dB(A) - 135dB(THD＜3% @1000Hz)	12dB(A) - 113dB(THD＜3% @1000Hz)	10dB(A) - 113dB(THD＜3% @1000Hz)
Sensitivity range	50mV/Pa(-26dB±2dB) re 1V/Pa	250mV/Pa(-12dB±2dB) re 1V/Pa	250mV/Pa(-12dB±2dB) re 1V/Pa
Interface	BNC
Main material	Stainless steel
Operating temperature range	-20℃ - 60℃
RH	10- 90%no condensation
Storage conditions	Temperature:25℃±5℃，Humidity ：50%±15%RH(To ensure long-term stability of the sensor)

Optional coupler kit models
	CM 311+A 804	CM 314+A 815+AD 022+AD 021
Frequency response of pressure field microphone	20Hz – 10kHz ± 0.5dB 10Hz – 16kHz ± 1dB	20Hz – 10kHz ± 0.5dB 10kHz – 20kHz ± 1dB
Noise floor	＜33dB(A)	＜20dB(A)
Dynamic range	33dB（A）- 141dB(THD＜3% @1000Hz)	20dB（A）- 134dB(THD＜3% @1000Hz)
Sensitivity range	12.5mV/Pa(-38dB±2dB) re 1V/Pa	50mV/Pa(-26dB±2dB) re 1V/Pa
Interface	BNC
Main material	Stainless steel
Operating temperature range	-20℃ - 60℃
RH	10- 90%no condensation
Storage conditions	Temperature:25℃±5℃，Humidity ：50%±15%RH(To ensure long-term stability of the sensor)

Coupler kit typical frequency response

CM 311+A 804曲线.png

Typical dimensions（unit：mm）

AH 231L+CM 311+A 804

AH 231R+CM 311+A 804

AH 231R尺寸.png

Ordering information

PN	Model	Description
900014-13	AH 231L	Left ear & cheek simulator
900014-14	AH 231R	Right ear & cheek simulator
900002-10	SS 770-11	16dBA acoustic coupler built-in microphone, front integrated, Type 711 configuration
900002-12	SS 771-11	12dBA acoustic coupler built-in microphone, front integrated, Type 711 configuration
900002-13	SS 772-11	10dBA acoustic coupler built-in microphone, front integrated, Type 711 configuration
900011-13	CM 311+A 804	33dBA acoustic coupler
900011-27	CM 314+A 815	20dBA acoustic coupler
900014-12	AD 022	Circular chassis
900014-08	AD 021	1/2" preamp L-shaped adapter; compatible with SS 770-11, SS 771-11, SS 772-11， CM 314+A 815
910024-01	PM 0083	Power amplifier
910019-01	U 921A	2-Channel constant current conditioner