Bose Aviation Headset Series II Owner's guide - Page 7

Figure 1 Adjusting the headset Using the Bose® Aviation Headset For proper headset fit Note: The headset must be worn with the Bose logo (located on the earcups) facing forward. To achieve comfort and good performance, adjust both sides of the headband equally to provide a comfortable fit. To achieve a good seal, lightly grasp both earcups and position them so that your ears are completely inside the Clear ComfortTM cushions. Note: If you hear a hiss or a low rumbling sound, this may indicate an improper fit. Extending the headband slightly should correct this condition. Wearing glasses with thick temples or a hat may interfere with the fit and cause a problem. Final adjustment is best accomplished in a noisy environment with the headset system turned on. Then, reposition both earcups until the headset seems quietest. 7